Part Number : 74HC157
Function : High-Speed CMOS Logic Quad 2-Input Multiplexer
Package : DIP, SOIC 16 Pin Type
Maker : Texas Instruments
Pinouts : 
Description :
The 74HC157, 74HCT157, 74HC158, and ’HCT158 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select input (S).
The Enable input (E) is active Low. When (E) is High, all of the outputs in the 158, the inverting type, (1Y-4Y) are forced High and in the 157, the non-inverting type, all of the outputs (1Y-4Y) are forced Low, regardless of all other input conditions.
Features
1. Low-power dissipation
2. Complies with JEDEC standard no. 7A
3. Input levels:
(1) For 74HC157: CMOS level
(2) For 74HCT157: TTL level
4. Non-inverting data path
Datasheet PDF Download : 
Others datasheet of same file :
5962-9070201MEA, 5962-9070301MEA, 74157, 74HCT157, CD54HC157F
