Datasheet

CHIP CARRIER
HCT157 HCT158
PIN DESCRIPTION (for HCT157)
PIN No SYMBOL NAME AND FUNCTION
1 SELECT Common Data Select
Input
2, 5, 11, 14 1A to 4A Data Inputs From
Source A
3, 6, 10, 13 1B to 4B Data Inputs From
Source B
4, 7, 9, 12 1Y to 4Y Multiplexer Output
15 STROBE Strobe Input
8 GND Ground (0V)
16 V
CC
Positive Supply Voltage
PIN DESCRIPTION (for HCT158)
PIN No SYMBOL NAME AND FUNCTION
1 SELECT Common Data Select
Input
2, 5, 11, 14 1A to 4A Data Inputs From
Source A
3, 6, 10, 13 1B to 4B Data Inputs From
Source B
4, 7, 9, 12 1Y to 4Y Multiplexer Output
15 STROBE Strobe Input
8 GND Ground (0V)
16 V
CC
Positive Supply Voltage
INPUT AND OUTPUT EQUIVALENT CIRCUIT
M54/M74HCT157 M54/M74HCT158
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