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MC54HC157-MC54HC157AJ-MC74HC157-MC74HC157AD-MC74HC157AN
Quad 2-Input Data Selectors/Multiplexers
SEMICONDUCTOR TECHNICAL DATA!
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High–Performance Silicon–Gate CMOSThe MC54/74HC157A is identical in pinout to the LS157. The device
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL 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 noninverted form. A
high level on the Output Enable input sets all four Y outputs to a low level.
The HC157A is similar in function to the HC257 which has 3–state outputs. Output Drive Capability: 10 LSTTL Loads 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 In Compliance with the Requirements Defined by JEDEC Standard
No. 7A Chip Complexity: 82 FETs or 20.5 Equivalent Gates
LOGIC DIAGRAMSELECT
OUTPUT
ENABLE
DATA
OUTPUTS
NIBBLE
A INPUTS
NIBBLE
B INPUTS
PIN 16 = VCC
PIN 8 = GND
