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Basic logic gates are available from multiple manufacturers as industry-standard ICs, which are functionally and pin-compatible. These ICs are called standard logic ICs.
Standard logic ICs from different manufacturers are housed in pin-compatible packages, except some small packages.
Standard logic ICs with the same function number provide the same function and pin assignment.
【Reference: Function numbers of typical standard logic ICs】
The function numbers of standard logic ICs are predefined according to the function, number of circuits, input logic, and output logic.
Function number | Function name |
---|---|
00 | Quad 2-input NAND |
02 | Quad 2-input NOR |
04 | Hex Inverter |
05 | Hex Inverter (Open-Drain) |
07 | Hex Buffer (Open-Drain) |
08 | Quad 2-Input AND |
14 | Hex Schmitt Inverter |
17 | Hex Schmitt Buffer |
21 | Dual 4-Input AND |
32 | Quad 2-Input OR |
74 | Dual D-Type Flip-Flop with Preset and Clear |
86 | Quad Exclusive OR |
Function number | Function name |
---|---|
123 | Dual Monostable Multivibrator |
125 | Quad Bus Buffer (3-State) |
138 | 3-to-8 Line Decoder |
157 | Quad 2-Channel Multiplexer |
164 | 8-Bit Serial-In / Parallel-Out Shift Register |
244 | Octal Bus Buffer (3-State) |
245 | Octal Bus Transceiver (3-State) |
273 | Octal D-Type Flip-Flop with Clear |
373 | Octal D-Type Latch (3-State) |
541 | Octal Bus Buffer (3-State) |
574 | Octal D-Type Flip-Flop (3-State) |
595 | 8-Bit Shift Register/Latch (3-State) |