Some standard content:
UDC621.3.049.77：001.4
National Standard of the People's Republic of China
9178-88
Terminology for integrated circuits
Terminology for integrated circuits1988-05-19 Issued
Implementation on 1988-10-01
National Bureau of Standards
050928071383
Basic terminology.
Digital integrated circuits…
Analog integrated circuits…
Interface integrated circuits
Hybrid integrated circuits and others
Appendix A
Combined integrated circuits and sequential integrated circuits Appendix B
Chinese Index (Reference)
English Index (Reference)
(1)
.(26)
(36)
(58)
：(62)
·(74)
·(86)
National Standard of the People's Republic of China
Terminology for integrated circuits
Terminology for integrated circuitsUDC621.3.049.77
GB9178-88
This standard specifies the basic terms used in the production, manufacturing, engineering application and trade of integrated circuits. This standard applies to production, engineering, scientific research, teaching and trade related to integrated circuits. 1 Basic terms
General terms
Microelectronics
microelectronics
The discipline of the construction and application of highly miniaturized electronic circuits. 1.1.2 Microcircuit
microcircuit
A microelectronic device with high-density equivalent circuit elements and (or) components that can be used as an independent unit. Note: A microcircuit can be a micromodule or an integrated (micro) circuit. 1.1.3
Integrated electronics
Integrated electronics
The process and technology of the design, manufacture and use of integrated circuits. 1.1.4 Integrated circuit
integrated circuit
A circuit that connects several circuit elements inseparably and is electrically interconnected so that it is regarded as an indivisible circuit for the purpose of specification, testing, trade and maintenance. Note: The circuit elements of this definition are not encapsulated or externally connected and cannot be specified or sold as independent products. 1.1.5
Integrated microcircuit
integrated microcircuit
A microcircuit in which several circuit elements are inseparably connected together and electrically interconnected so that they are regarded as inseparably connected for the purpose of specification, testing, trade and maintenance. Note: ①See the note in 1.1.4.
②Under the circumstances where there is no misunderstanding, the term "integrated microcircuit" may be abbreviated as "integrated circuit" ③In order to explain the technology used to manufacture a specific integrated circuit, further qualifiers may be used. For example:
Semiconductor monolithic integrated circuit;
Semiconductor multi-chip integrated circuit;
Thin film integrated circuit;
Approved by the National Bureau of Standards on May 19, 1988
Implementation on October 1, 1988
Micromodule
-Thick film integrated circuit:
-Hybrid integrated circuit.
micro--assembly
GB 9178-88
A microcircuit composed of various independently manufactured components and (or) integrated microcircuits that can be tested before assembly and packaging. Note: ① The components defined in this definition have encapsulation and external connections, and can be specified and sold as independent products. ② In order to explain the technology used to manufacture specific micro-components, further qualifiers can be used. For example:
Semiconductor multi-chip micro-component:
A discrete component micro-component.
Semiconductor device
semiconductordevice
The basic characteristics are due to the flow of carriers in the semiconductor. Circuit element
circuit element
A passive or active element that performs a certain electrical function in an integrated circuit. Active element
activeelement
A (circuit) element that mainly provides rectification, switching and amplification functions for the circuit. Note: Active components can also play the role of resistors and capacitors in the circuit, or convert external energy from one form to another. For example: diodes, transistors, semiconductor integrated circuits, photosensitive semiconductor devices and light-emitting semiconductor devices. 1.1.10 Passive components Passive element A component that acts as a resistor, capacitor or inductor, or a combination of them, for the function of the circuit. Note: For example, resistors, capacitors, inductors, etc. 1 Terminal (of semiconductor device) Terminal (of semiconductor device) A specified external available connection point. 1.1.12 Blank terminal A terminal that has no internal connection and can be used as a support for external wiring without affecting the function of the device. If a voltage is applied to this terminal (through an external connection), it shall not exceed the maximum power supply voltage rating of this circuit. Note: ① The abbreviation is NC (no internal connection). ② If a higher voltage is allowed to be applied, it should be noted. 1.1.13 Non-usable terminal
non-usable terminal
A terminal that should not be used in normal application and may or may not have an internal connection. 2
Note: The abbreviation is NU.
1.1.14 Electrode
electrode
GB9178-88
The part that provides electrical connection between the specified area of a semiconductor device and the inner lead connected to the terminal. 1.1.15 Functional--block diagram
functional--block diagram
A diagram that represents the internal basic unit structure of a complex integrated circuit according to function. 1.1.16 Package outline drawing
packageoutlinedrawing
A package drawing that specifies the relevant features such as dimensional characteristics and mechanical interchangeability requirements. 1.2 Device type
Microcircuit module
microcircuit
module
A micro-component or an assembly of microcircuits and discrete components designed and manufactured to achieve one or more circuit functions. It is an indivisible whole in terms of standardized characteristic tests, trade and maintenance. Note: To describe the technology used to manufacture a specific circuit, further qualifiers may be used, which is more necessary in the case of hybrid integrated circuits. Semiconductor integrated circuit
semiconductor integrated circuit An integrated circuit in which components are formed and interconnected inside and on a semiconductor. Monolithic integrated circuit
monolithicintegrated eircuit An integrated circuit in which all components are made on a single semiconductor chip. Multi-chip integrated circuit
multichipintegratedcircuit
An integrated circuit in which only two or more semiconductor chips are installed in a package. Film integrated circuit
film integrated cireuit
An integrated circuit in which the components and interconnections are formed in the form of a film on the surface of an insulating substrate. The film components can be active or passive.
Hybrid integrated circuit
circuit
hybridintegrated
An integrated circuit formed by any combination of semiconductor integrated circuits and film integrated circuits, or by any combination of any of these circuits with discrete components.
Bipolar integrated circuit
bipolar integrated circuit
An integrated circuit constructed with bipolar transistors as the basic active components. Metal-oxide-semiconductor integrated circuit (MOSIC) 1.2.81
metal-oxide-semiconductorintegratedcircuit（MOSIC）
GB 9178-88
An integrated circuit composed of metal-oxide-semiconductor field-effect transistors as basic active components. Digital integrated circuit
digital integrated circuit
An integrated circuit that operates with digital signals at the input and output. Note: ①In this definition, the input and output do not include static power supplies. ②In some digital circuits, such as certain types of non-steady-state circuits, there is no need for input terminals. ③When there is no misunderstanding, "integrated" can be omitted from the term. 1.2.10 Analog integrated circuit
anaiogueintegrated circuit
An integrated circuit that amplifies, converts, modulates, transmits, operates, etc. on current or voltage representing continuous physical quantities. It can be divided into linear integrated circuits and nonlinear integrated circuits. Note: See note ③ in 1.2.9.
1.2.11 Interface integrated circuit
Interface integrated circuit An integrated circuit that uses its input and output terminals to connect incompatible parts of an electronic system. Note: ① The input and output signals can be in any of the following forms: a. Digital input, analog output;
b. Analog input, digital output;
c. Digital input, digital output;
d. Analog input, analog output.
In the "c" form, the input digital signal level is different from the output digital signal level. ②See Note ③ in 1.2.9.
1, 2:12 Memory integrated circuit
integrated circuit memory
An integrated circuit composed of storage units and usually also includes some related circuits, such as address selectors, amplifiers, etc. Note: See Note ③ in 1.2.9.
1.2.13 Microprocessor integrated circuit
integrated circuit microprocessor An integrated circuit with the following functions: a. Able to operate according to coded instructions:
b: Able to receive coded data for processing and/or storage according to instructions; able to perform arithmetic and logical operations on input data and related data stored in registers within the circuit and/or external storage according to instructions; able to send coded data according to instructions; C. Able to receive and/or send signals used to control and/or describe the operation or status of the microprocessor integrated circuit. Note: ④ These instructions can be input, fixed or stored in an internal memory. ② See Note ③ in 1.2.9.
1.3 Materials and processes
Wafer (round wafer)
GB 9178-88
A semiconductor material or a thin sheet or flat round wafer formed by depositing such semiconductor material on a substrate, on which one or more devices can be made at the same time, and then it can be divided into chips. Chip
chip(die)
A portion of a wafer containing a device or circuit array that contains at least one circuit. Substrate
substrate
The material on the surface and inside of which the device or circuit element is manufactured. Substrate
substrate
A sheet of material that forms a supporting base for membrane circuit components and (or) externally mounted components. Film
A solid layer formed on a solid substrate by any deposition process. 1.3.6
Planar technique
Planar technique
The process of manufacturing components and circuits on a substrate using techniques such as mask diffusion, metallization, and photolithography. Epitaxial technique
epitaxy technique
The process of growing a layer of semiconductor material with the same or similar crystalline phase as the substrate on a substrate. Photolithography
photolithography.technique
The process of making the required pattern on a wafer coated with a photoresist film by using exposure, development, etching and other technologies.
Vacuum evaporation
vacuumevaporation
The process of heating a material in a vacuum and evaporating it to form a film on the surface of other materials. 1.3.10 Diffusion process
diffusiontechnique
The process of diffusing impurity atoms into a semiconductor crystal to form a P-type or N-type conductivity region in the crystal. 1.3.11 Ion implantation
ion implantation
The accelerated ions are implanted into a semiconductor crystal to form a P-type, N-type or intrinsic conductive region in the crystal. 1.3.12 Sputtering
sputtering
The process of releasing electrode materials by bombardment of gas ions in glow discharge and depositing them on the surface of other materials to form a film. 1.3.13 Metallization
metallization
GB9178-88
The process of depositing a metal film and making wiring patterns to form the required internal connections, etc. 1.3.14 Surface passivation
surfacepassivation
The process of growing or coating a protective film on the surface of a semiconductor after the P region, N region and PN junction are formed. 1.3.15 Protective coating
protective coating
An insulating material layer applied to the surface of circuit components as a mechanical protection and to prevent contamination. 1.3.16 Wirebonding
wirehonding
The process of applying stress to thin metal wires in order to make them form ohmic contact with the specified metallization area on the chip or the specified area on the base.
1.3.17 Encapsulation
encapsulation
The general process of encapsulating circuits and components with a protective medium to resist mechanical, physical and chemical stresses. Potting
embedding
The process of burying the main body of a circuit or component with a curable resin. For example:
Casting;
Pouring:
Dip coating:
Continuous molding
1.3.19 Case
package
(case)
The full or partial encapsulation of an integrated circuit. It provides: - Mechanical protection;
Environmental protection;
An overall dimension.
The housing may contain or provide terminals, which affect the thermal performance of the integrated circuit. 1.3.20 Base
Header
The part of the package used to mount the semiconductor chip. 1.3.21
Mechanical index
Mechanical index
Features that provide orientation during automatic operation (such as keys, grooves, V-notches, flats, fine grooves, depressions, etc.). Note: The terminal identification mark, which is usually used as a reference feature to identify the position of the first terminal, coincides with this mark. Inspection and characteristics
1.4.1 Inspection
inspection
GB 9178-88
The process of comparing a unit product with the required conditions by measurement, inspection, test or other methods. 1.4.2 Screening
sereening
Inspection or test of all products in a production batch in order to detect and eliminate potential failures. Capability Qualifying Circuit (CQC)
capabilityqualifyingcircuit
(CQC)
A test sample used to partially or fully evaluate the declared capability. It can be a specially designed specimen, a circuit in normal production, or a combination of the above two situations. Accelerated test
acceleratedtest
In order to shorten the test time, the test is carried out by increasing the stress method without changing the failure mechanism. Note: It can usually be divided into constant stress, step stress and sequential stress tests. Worst-case condition (for a single characteristic)
worst-casecondition
(for a single characteristic) are selected from the specified range respectively, and these conditions are applied simultaneously to produce the most unfavorable value for the characteristic under consideration.
1.4.6 Static parameters
staticparameters
Electrical parameters used to represent the DC characteristics of integrated circuits and components. For example: DC voltage, DC current or DC voltage ratio, DC current ratio, or the ratio of DC voltage to DC current. Dynamic parameters
dynamicparameters
Electrical parameters used to represent the AC characteristics of integrated circuits and components. For example: the root mean square value of voltage or current and its value changing with time or the ratio between them. 2 Digital integrated circuits
2.1 Combinational integrated circuits and sequential integrated circuits 2.1.1
General terms
Digital signal
digital signal
A physical quantity with a finite time-varying non-overlapping value range, used to transmit or process information. Note: ① The physical quantity can be current, voltage or impedance, etc. ② For convenience, each value range can be represented by a single value, such as a nominal value. 2 Binary signal
binary signal
A digital signal with only two possible value ranges. 7
Note: See Note ② of 2.1.1.
(of a binary signal) low range
GB 9178-88
low range(of a binary signal)The lowest positive level (lowest negative level) range of a binary signal. Note: This range is usually represented by "L--range", and any level within this range is represented by "L--level". (of a binary signal) high range
high range (of a binary signal)The highest positive level [highest negative level) range of a binary signal. Note: This range is usually represented by "H--range", and any level within this range is represented by "H--level". 5 Input terminal
input terminal
The terminal to which a signal is applied can directly change the circuit output configuration (output pattern), or indirectly change the circuit output configuration [output pattern) by changing the way the circuit responds to other terminals. three-state output
three-state output
The output of a binary circuit that is a relatively low impedance source or sink when high and low, and provides a high impedance state that approximates an open circuit under appropriate input conditions. Note: In function tables and function (timing) diagrams, Z is used to represent the high impedance state. 2.1.1.7
input configuration (input pattern) (of a binary circuit)inputconfiguration
The combination of low and high levels at the input terminal at a given instant. output configuration (output pattern) (of a binary circuit)outputconfiguration (outputpattern) (ofabinarycircuit)
Note: Where there is no confusion, the output configuration (output pattern) can be represented by the signal level (low or high) at a specified output terminal (reference output terminal).
2.1.1.9 Function table
function table
A method of expressing the necessary or possible relationship between the digital signal values at the input and output of a digital circuit, which are directly represented by electrical parameter values or symbols with specified electrical meanings (such as L and H in binary circuits).
Generally:
- Each column in the table gives the digital signal value at an input or output of a digital circuit; - Each row in the table gives a set of values of the digital signal at the (each) input terminal, and the resulting value of the digital signal generated at the (each) output terminal;
- If the digital signal value at the output terminal is uncertain, it should be indicated by a question mark; - If the digital signal value at the input terminal has no effect, it should be indicated by the symbol "L/H" or "X". 2.1.1.10 Truth table (for relations between digital variables) 8.
GB 9178-88
truth table (for relations between digital variables) A method of expressing the logical relations between one or more digital independent variables and one or more digital dependent variables in a tabular form; that is, a method of expressing the corresponding digital dependent variable values for various possible combinations of digital independent variable values. Note: It is necessary to distinguish between "function table" and "truth table" because the same digital circuit can perform several different logical operations based on the digital variable values arbitrarily selected for the digital electrical parameter values. 2.11.11 Excitation
excitation
An input configuration (input graph), or a change in an input configuration (input graph). Its function is to change the output configuration (output graph) of the circuit directly or together with an existing preparatory state; or to put the circuit in a preparatory state; or to cancel or change an existing preparatory state. Note: ① The reproduction or repetition of a given excitation may not necessarily produce the same result. ② In some cases, the excitation keeps the established output configuration (output graph) unchanged. 2.1.1.12
active level (of a digital input signal to a sequential circuit) a digital input signal level that produces an excitation. 2.1.1.13
active transition (of a digital input signal to sequential circuit)
a transition of a digital input signal from one level to another that produces an excitation. Note: An effective transition may also be limited by the slope of the signal. 2.1.1.14 (of sequential circuit) stable output configuration [output pattern] stable output configuration
circuit)
(output pattern)
(of sequential
) A circuit output configuration (output pattern) that remains unchanged after the stimulus that produces it or any other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern) or in the absence of stimulus. Note: Any output configuration (output pattern) that is short-lived due to undesirable capacitance, storage time, transmission time, etc. is not considered
2.1.1.15 (of sequential circuits) pseudo-stable output configuration [output pattern] pseudo-stable output configuration sequential circuit)
(output pattern) (of a
an output configuration (output pattern) that no longer exists after the stimulus that produces it or the other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern)? Note: See the note of 2.1.1.14.
2.1.1.16 (of sequential circuits) metastable output configuration (output pattern) meta-stable output configuration sequential circuit)
output
pattern)
an output configuration (output pattern) that exists only for a limited duration after the application of appropriate stimulus. Note: ① The duration of the metastable output configuration (output pattern) depends on the circuit design and the conditions that produce this output configuration (output 91
General terms
digital signal
digital signal
Non-overlapping value ranges are limited physical quantities that vary with time and are used to transmit or process information. Note: ① The physical quantity can be current, voltage or impedance, etc. ② For convenience, each value range can be represented by a single numerical value, such as a nominal value. 2 Binary signal
binary signal
Digital signal with only two possible value ranges. 7
Note: See Note ② of 2.1.1.
(of a binary signal) low range
GB 9178-88
low range (of a binary signal) The lowest positive level (lowest negative level) range of a binary signal. Note: This range is usually represented by "L--value range", and any level within this range is represented by "L--level". high range (of a binary signal) The highest positive level [highest negative level) range of a binary signal. Note: This range is usually represented by "H-value range", and any level within this range is represented by "H-level". 5 Input terminal
input terminal
The terminal to which a signal is applied can directly change the circuit output configuration (output pattern), or indirectly change the circuit output configuration [output pattern) by changing the way the circuit responds to other terminals. Three-state output
three-state output
A source or sink of relatively low impedance at high and low levels, and provides a binary circuit output in a high-impedance state that is similar to an open circuit under appropriate input conditions. Note: In the function table and function (timing) diagram, Z is used to represent the high-impedance state. 2.1.1.7
Input configuration (input pattern) (of a binary circuit)inputconfiguration
At a given instant, the combination of low and high levels on the input terminal. Output configuration (output pattern) (of a binary circuit)outputconfiguration (outputpattern) (of a binary circuit)
Note: Where there is no confusion, the output configuration (output pattern) can be represented by the signal level (low or high) at a specified output terminal (reference output terminal).
2.1.1.9 Function table
function table
A method of expression that specifies the necessary or possible relationship between the digital signal values at the input and output terminals of a digital circuit, where these digital signal values are directly represented by electrical parameter values or symbols with specified electrical meanings (such as L and H in a binary circuit).
Generally:
Each column in a table gives the value of a digital signal at an input or output of a digital circuit; -Each row in a table gives a set of values of a digital signal at (each) input terminal, and the resulting value of a digital signal generated at (each) output terminal;
If the value of a digital signal at an output terminal is uncertain, a question mark is used to indicate it; -If the value of a digital signal at an input terminal is ineffective, the symbol "L/H" or "X" is used to indicate it. 2.1.1.10 Truth table (for relations between digital variables) 8.
GB 9178-88
truth table (for relations between digital variables) A method of expressing the logical relations between one or more digital independent variables and one or more digital dependent variables in a tabular form; that is, for various possible combinations of digital independent variable values, the corresponding digital dependent variable values can be given. Note: It is necessary to distinguish between "function table" and "truth table" because the same digital circuit can perform several different logical operations based on the digital variable values arbitrarily selected for the digital electrical parameter values. 2.11.11 Excitation
excitation
An input configuration (input pattern), or a change in an input configuration (input pattern). Its effect can directly or in conjunction with an existing preparatory state cause the circuit to change its output configuration (output pattern); or put the circuit into a preparatory state; or cancel or change an existing preparatory state. Note: ① The reappearance or repetition of a given excitation may not necessarily produce the same result. ② In some cases, the excitation keeps the established output configuration (output pattern) unchanged. 2.1.1.12
(of a digital input signal to a sequential circuit) active level (of a digital input signal to a sequential circuit) digital input signal level that can produce excitation. (of a digital input signal to a sequential circuit) active transition 2.1.1.13
active transition (of a digital input signal to sequential circuit)
A transition of a digital input signal from one level to another that can produce an excitation. Note: The effective transition may also be limited by the signal slope. 2.1.1.14 (of sequential circuit) stable output configuration [output pattern] stable output configuration
circuit)
(output pattern)
(of sequential
) A circuit output configuration (output pattern) that remains unchanged after the stimulus that produces it or any other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern) or in the absence of stimulus. Note: Any output configuration (output pattern) that is short-lived due to undesirable capacitance, storage time, transmission time, etc. is not considered
2.1.1.15 (of sequential circuits) pseudo-stable output configuration [output pattern] pseudo-stable output configuration sequential circuit)
(output pattern) (of a
an output configuration (output pattern) that no longer exists after the stimulus that produces it or the other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern)? Note: See the note of 2.1.1.14.
2.1.1.16 (of sequential circuits) metastable output configuration (output pattern) meta-stable output configuration sequential circuit)
output
pattern)
an output configuration (output pattern) that exists only for a limited duration after the application of appropriate stimulus. Note: ① The duration of the metastable output configuration (output pattern) depends on the circuit design and the conditions that produce this output configuration (output 91
General terms
digital signal
digital signal
Non-overlapping value ranges are limited physical quantities that vary with time and are used to transmit or process information. Note: ① The physical quantity can be current, voltage or impedance, etc. ② For convenience, each value range can be represented by a single numerical value, such as a nominal value. 2 Binary signal
binary signal
Digital signal with only two possible value ranges. 7bzxZ.net
Note: See Note ② of 2.1.1.
(of a binary signal) low range
GB 9178-88
low range (of a binary signal) The lowest positive level (lowest negative level) range of a binary signal. Note: This range is usually represented by "L--value range", and any level within this range is represented by "L--level". high range (of a binary signal) The highest positive level [highest negative level) range of a binary signal. Note: This range is usually represented by "H-value range", and any level within this range is represented by "H-level". 5 Input terminal
input terminal
The terminal to which a signal is applied can directly change the circuit output configuration (output pattern), or indirectly change the circuit output configuration [output pattern) by changing the way the circuit responds to other terminals. Three-state output
three-state output
A source or sink of relatively low impedance at high and low levels, and provides a binary circuit output in a high-impedance state that is similar to an open circuit under appropriate input conditions. Note: In the function table and function (timing) diagram, Z is used to represent the high-impedance state. 2.1.1.7
Input configuration (input pattern) (of a binary circuit)inputconfiguration
At a given instant, the combination of low and high levels on the input terminal. Output configuration (output pattern) (of a binary circuit)outputconfiguration (outputpattern) (of a binary circuit)
Note: Where there is no confusion, the output configuration (output pattern) can be represented by the signal level (low or high) at a specified output terminal (reference output terminal).
2.1.1.9 Function table
function table
A method of expression that specifies the necessary or possible relationship between the digital signal values at the input and output terminals of a digital circuit, where these digital signal values are directly represented by electrical parameter values or symbols with specified electrical meanings (such as L and H in a binary circuit).
Generally:
Each column in a table gives the value of a digital signal at an input or output of a digital circuit; -Each row in a table gives a set of values of a digital signal at (each) input terminal, and the resulting value of a digital signal generated at (each) output terminal;
If the value of a digital signal at an output terminal is uncertain, a question mark is used to indicate it; -If the value of a digital signal at an input terminal is ineffective, the symbol "L/H" or "X" is used to indicate it. 2.1.1.10 Truth table (for relations between digital variables) 8.
GB 9178-88
truth table (for relations between digital variables) A method of expressing the logical relations between one or more digital independent variables and one or more digital dependent variables in a tabular form; that is, for various possible combinations of digital independent variable values, the corresponding digital dependent variable values can be given. Note: It is necessary to distinguish between "function table" and "truth table" because the same digital circuit can perform several different logical operations based on the digital variable values arbitrarily selected for the digital electrical parameter values. 2.11.11 Excitation
excitation
An input configuration (input pattern), or a change in an input configuration (input pattern). Its effect can directly or in conjunction with an existing preparatory state cause a circuit to change its output configuration (output pattern); or put a circuit into a preparatory state; or cancel or change an existing preparatory state. Note: ① The reappearance or repetition of a given excitation may not necessarily produce the same result. ② In some cases, the excitation keeps the established output configuration (output pattern) unchanged. 2.1.1.12
(of a digital input signal to a sequential circuit) active level (of a digital input signal to a sequential circuit) digital input signal level that can produce excitation. (of a digital input signal to a sequential circuit) active transition 2.1.1.13
active transition (of a digital input signal to sequential circuit)
A transition of a digital input signal from one level to another that can produce an excitation. Note: The effective transition may also be limited by the signal slope. 2.1.1.14 (of sequential circuit) stable output configuration [output pattern] stable output configuration
circuit)
(output pattern)
(of sequential
) A circuit output configuration (output pattern) that remains unchanged after the stimulus that produces it or any other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern) or in the absence of stimulus. Note: Any output configuration (output pattern) that is short-lived due to undesirable capacitance, storage time, transmission time, etc. is not considered
2.1.1.15 (of sequential circuits) pseudo-stable output configuration [output pattern] pseudo-stable output configuration sequential circuit)
(output pattern) (of a
an output configuration (output pattern) that no longer exists after the stimulus that produces it or the other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern)? Note: See the note of 2.1.1.14.
2.1.1.16 (of sequential circuits) metastable output configuration (output pattern) meta-stable output configuration sequential circuit)
output
pattern)
an output configuration (output pattern) that exists only for a limited duration after the application of appropriate stimulus. Note: ① The duration of the metastable output configuration (output pattern) depends on the circuit design and the conditions that produce this output configuration (output 97
Input configuration (input pattern) (of a binary circuit)inputconfiguration
At a given moment, the combination of low and high levels on the input terminal. Output configuration (output pattern) (of a binary circuit)outputconfiguration (outputpattern) (of a binary circuit)
Note: Where there is no confusion, the output configuration (output pattern) can be expressed by the signal level (low or high) at the specified output terminal (reference output terminal).
2.1.1.9 Function table
function table
A method of expression that specifies the necessary or possible relationship between the digital signal values at the input and output terminals of a digital circuit, where these digital signal values are directly expressed using electrical parameter values or symbols with specified electrical meanings (such as L and H in a binary circuit).
Generally:
Each column in a table gives the value of a digital signal at an input or output of a digital circuit; -Each row in a table gives a set of values of a digital signal at (each) input terminal, and the resulting value of a digital signal generated at (each) output terminal;
If the value of a digital signal at an output terminal is uncertain, a question mark is used to indicate it; -If the value of a digital signal at an input terminal is ineffective, the symbol "L/H" or "X" is used to indicate it. 2.1.1.10 Truth table (for relations between digital variables) 8.
GB 9178-88
truth table (for relations between digital variables) A method of expressing the logical relations between one or more digital independent variables and one or more digital dependent variables in a tabular form; that is, for various possible combinations of digital independent variable values, the corresponding digital dependent variable values can be given. Note: It is necessary to distinguish between "function table" and "truth table" because the same digital circuit can perform several different logical operations based on the digital variable values arbitrarily selected for the digital electrical parameter values. 2.11.11 Excitation
excitation
An input configuration (input pattern), or a change in an input configuration (input pattern). Its effect can directly or in conjunction with an existing preparatory state cause a circuit to change its output configuration (output pattern); or put a circuit into a preparatory state; or cancel or change an existing preparatory state. Note: ① The reappearance or repetition of a given excitation may not necessarily produce the same result. ② In some cases, the excitation keeps the established output configuration (output pattern) unchanged. 2.1.1.12
(of a digital input signal to a sequential circuit) active level (of a digital input signal to a sequential circuit) digital input signal level that can produce excitation. (of a digital input signal to a sequential circuit) active transition 2.1.1.13
active transition (of a digital input signal to sequential circuit)
A transition of a digital input signal from one level to another that can produce an excitation. Note: The effective transition may also be limited by the signal slope. 2.1.1.14 (of sequential circuit) stable output configuration [output pattern] stable output configuration
circuit)
(output pattern)
(of sequential
) A circuit output configuration (output pattern) that remains unchanged after the stimulus that produces it or any other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern) or in the absence of stimulus. Note: Any output configuration (output pattern) that is short-lived due to undesirable capacitance, storage time, transmission time, etc. is not considered
2.1.1.15 (of sequential circuits) pseudo-stable output configuration [output pattern] pseudo-stable output configuration sequential circuit)
(output pattern) (of a
an output configuration (output pattern) that no longer exists after the stimulus that produces it or the other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern)? Note: See the note of 2.1.1.14.
2.1.1.16 (of sequential circuits) metastable output configuration (output pattern) meta-stable output configuration sequential circuit)
output
pattern)
an output configuration (output pattern) that exists only for a limited duration after the application of appropriate stimulus. Note: ① The duration of the metastable output configuration (output pattern) depends on the circuit design and the conditions that produce this output configuration (output 97
Input configuration (input pattern) (of a binary circuit)inputconfiguration
At a given moment, the combination of low and high levels on the input terminal. Output configuration (output pattern) (of a binary circuit)outputconfiguration (outputpattern) (of a binary circuit)
Note: Where there is no confusion, the output configuration (output pattern) can be expressed by the signal level (low or high) at the specified output terminal (reference output terminal).
2.1.1.9 Function table
function table
A method of expression that specifies the necessary or possible relationship between the digital signal values at the input and output terminals of a digital circuit, where these digital signal values are directly expressed using electrical parameter values or symbols with specified electrical meanings (such as L and H in a binary circuit).
Generally:
Each column in a table gives the value of a digital signal at an input or output of a digital circuit; -Each row in a table gives a set of values of a digital signal at (each) input terminal, and the resulting value of a digital signal generated at (each) output terminal;
If the value of a digital signal at an output terminal is uncertain, a question mark is used to indicate it; -If the value of a digital signal at an input terminal is ineffective, the symbol "L/H" or "X" is used to indicate it. 2.1.1.10 Truth table (for relations between digital variables) 8.
GB 9178-88
truth table (for relations between digital variables) A method of expressing the logical relations between one or more digital independent variables and one or more digital dependent variables in a tabular form; that is, for various possible combinations of digital independent variable values, the corresponding digital dependent variable values can be given. Note: It is necessary to distinguish between "function table" and "truth table" because the same digital circuit can perform several different logical operations based on the digital variable values arbitrarily selected for the digital electrical parameter values. 2.11.11 Excitation
excitation
An input configuration (input pattern), or a change in an input configuration (input pattern). Its effect can directly or in conjunction with an existing preparatory state cause a circuit to change its output configuration (output pattern); or put a circuit into a preparatory state; or cancel or change an existing preparatory state. Note: ① The reappearance or repetition of a given excitation may not necessarily produce the same result. ② In some cases, the excitation keeps the established output configuration (output pattern) unchanged. 2.1.1.12
(of a digital input signal to a sequential circuit) active level (of a digital input signal to a sequential circuit) digital input signal level that can produce excitation. (of a digital input signal to a sequential circuit) active transition 2.1.1.13
active transition (of a digital input signal to sequential circuit)
A transition of a digital input signal from one level to another that can produce an excitation. Note: The effective transition may also be limited by the signal slope. 2.1.1.14 (of sequential circuit) stable output configuration [output pattern] stable output configuration
circuit)
(output pattern)
(of sequential
) A circuit output configuration (output pattern) that remains unchanged after the stimulus that produces it or any other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern) or in the absence of stimulus. Note: Any output configuration (output pattern) that is short-lived due to undesirable capacitance, storage time, transmission time, etc. is not considered
2.1.1.15 (of sequential circuits) pseudo-stable output configuration [output pattern] pseudo-stable output configuration sequential circuit)
(output pattern) (of a
an output configuration (output pattern) that no longer exists after the stimulus that produces it or the other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern)? Note: See the note of 2.1.1.14.
2.1.1.16 (of sequential circuits) metastable output configuration (output pattern) meta-stable output configuration sequential circuit)
output
pattern)
an output configuration (output pattern) that exists only for a limited duration after the application of appropriate stimulus. Note: ① The duration of the metastable output configuration (output pattern) depends on the circuit design and the conditions that produce this output configuration (output 913
activetransition（ofadigitalinputsignaltosequentialcircuit)
A transition of a digital input signal from one level to another that can produce an excitation. Note: The effective transition may also be limited by the slope of the signal. 2.1.1.14 (ofsequential circuit) stableoutputconfiguration [output pattern)stableoutputconfiguration
circuit)
（outputpattern）
（ofsequential
A circuit output configuration (output pattern) that remains unchanged after the stimulus that produces it or any other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern) or in the absence of stimulus. Note: Any output configuration (output pattern) that is short-lived due to undesirable capacitance, storage time, and transmission time is not considered
2.1.1.15 (of sequential circuits) pseudo-stable output configuration [output pattern] pseudo-stable output configuration sequential circuit)
(output pattern) (of a
an output configuration (output pattern) that no longer exists after the stimulus that produces it or the other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern)? Note: See the note of 2.1.1.14.
2.1.1.16 (of sequential circuits) metastable output configuration (output pattern) meta-stable output configuration sequential circuit)
output
pattern)
an output configuration (output pattern) that exists only for a limited duration after the application of appropriate stimulus. Note: ① The duration of the metastable output configuration (output pattern) depends on the circuit design and the conditions that produce this output configuration (output 913
activetransition（ofadigitalinputsignaltosequentialcircuit)
A transition of a digital input signal from one level to another that can produce an excitation. Note: The effective transition may also be limited by the slope of the signal. 2.1.1.14 (ofsequential circuit) stableoutputconfiguration [output pattern)stableoutputconfiguration
circuit)
（outputpattern）
（ofsequential
A circuit output configuration (output pattern) that remains unchanged after the stimulus that produces it or any other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern) or in the absence of stimulus. Note: Any output configuration (output pattern) that is short-lived due to undesirable capacitance, storage time, and transmission time is not considered
2.1.1.15 (of sequential circuits) pseudo-stable output configuration [output pattern] pseudo-stable output configuration sequential circuit)
(output pattern) (of a
an output configuration (output pattern) that no longer exists after the stimulus that produces it or the other stimulus that maintains it is replaced by a non-stimulating input configuration (input pattern)? Note: See the note of 2.1.1.14.
2.1.1.16 (of sequential circuits) metastable output configuration (output pattern) meta-stable output configuration sequential circuit)
output
pattern)
an output configuration (output pattern) that exists only for a limited duration after the application of appropriate stimulus. Note: ① The duration of the metastable output configuration (output pattern) depends on the circuit design and the conditions that produce this output configuration (output 9
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