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IN74AC157 fiches techniques PDF

IK Semiconductor - Quad 2-1 Data Selector/Multiplexer

Numéro de référence IN74AC157
Description Quad 2-1 Data Selector/Multiplexer
Fabricant IK Semiconductor 
Logo IK Semiconductor 





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IN74AC157 fiche technique
TECHNICAL DATA
Quad 2-Input Data Selector/Multiplexer
High-Speed Silicon-Gate CMOS
IN74AC157
The IN74AC157 is identical in pinout to the LS/ALS157,
HC/HCT157. The device inputs are compatible with standard CMOS
outputs; with pullup resistors, they are compatible with LS/ALS outputs.
This device routes 2 nibbles (A or B) to a single port (Y) as
determined by the Select input. The data is presented at the outputs in
noninvertered form. A high level on the Output Enable input sets all four
Y outputs to a low level.
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0 µA; 0.1µA @ 25°C
High Noise Immunity Characteristic of CMOS Devices
Outputs Source/Sink 24 mA
ORDERING INFORMATION
IN74AC157N Plastic
IN74AC157D SOIC
TA = -40° to 85° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 16 =VCC
PIN 8 = GND
www.datasheet4u.com
FUNCTION TABLE
Inputs
Outputs
Output
Enable
Select Y0-Y3
H XL
L L A0-A3
L H B0-B3
X=don’t care
A0-A3,B0-B3=the levels of the respective
Data-Word Inputs
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