M74HC157
DESCRIPTION
PIN No
SYMBOL NAME AND FUNCTION
1 2, 5, 11, 14
SELECT 1A to 4A mon Data Select Input
Data Inputs From
3, 6, 10, 13
Source A 1B to 4B Data Inputs From
Source B
4, 7, 9, 12 1Y to 4Y Multiplexer Output
15 STROBE Strobe Inputs ct(s)TRUTH TABLE rodu STROBE PH te L le L o L s L b X : Don’t Care Obsolete Product(s)
- OLOGIC DIAGRAM
8 16
INPUTS
SELECT
X L L H H
X L H X X
GND VCC
Ground (0V) Positive Supply Voltage
OUTPUTS
XL XL XH LL HH
2/9
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC Supply Voltage
-0.5 to +7
VI DC Input Voltage
-0.5 to VCC + 0.5
VO DC Output Voltage
-0.5 to VCC + 0.5
IIK DC Input Diode Current
± 20 m...
