IZ74HC157A Ver la hoja de datos (PDF) - Integral Corp.
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IZ74HC157A Datasheet PDF : 6 Pages
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TECHNICAL DATA
IN74HC157A
Quad 2-Input Data Selectors/Multiplexer
The IN74HC157A is identical in pin out to the LS/ALS157. The device
inputs are compatible with standard CMOS outputs; with pull up resistors,
they are compatible with LS/ALSTTL 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 non inverted
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
• High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
IN74HC157AN Plastic
IN74HC157AD SOIC
IZ74HC157A Chip
TA = -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 16 =VCC
PIN 8 = GND
INTEGRAL
FUNCTION TABLE
Inputs
Outputs
Output
Enable
Select
Y0-Y3
H
X
L
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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