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KK74HC157AD Datasheet

  • KK74HC157AD

  • Quad 2-Input Data Selectors/Multiplexer

  • 6頁(yè)

  • KODENSHI

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TECHNICAL DATA
KK74HC157A
Quad 2-Input Data Selectors/Multiplexer
The KK74HC157A 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.
鈥?/div>
Outputs Directly Interface to CMOS, NMOS, and TTL
鈥?/div>
Operating Voltage Range: 2.0 to 6.0 V
鈥?/div>
Low Input Current: 1.0
碌A(chǔ)
鈥?/div>
High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
KK74HC157AN Plastic
KK74HC157AD SOIC
T
A
= -55擄 to 125擄 C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
Output
Enable
PIN 16 =V
CC
PIN 8 = GND
H
L
L
Select
X
L
H
Outputs
Y0-Y3
L
A0-A3
B0-B3
X=don鈥檛 care
A0-A3, B0-B3=the levels of the respective
Data-Word Inputs
1

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