TECHNICAL DATA
KK74HC158A
Quad 2-Input Data Selectors/Multiplexers
High-Performance Silicon-Gate CMOS
The KK74HC158A is identical in pinout to the LS/ALS158. The
device inputs are compatible with standard CMOS outputs; with pullup
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
invertered form. A high level on the Output Enable input sets all four Y
outputs to a high level.
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Outputs Directly Interface to CMOS, NMOS, and TTL
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Operating Voltage Range: 2.0 to 6.0 V
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Low Input Current: 1.0
碌A(chǔ)
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High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
KK74HC158AN Plastic
KK74HC158AD SOIC
T
A
= -55擄 to 125擄 C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
FUNCTION TABLE
Inputs
PIN 16 =V
CC
PIN 8 = GND
Output
Enable
H
L
L
Select
X
L
H
Outputs
Y0-Y3
H
A0-A3
B0-B3
X=don鈥檛 care
A0-A3,B0-B3=the levels of the respective
Data-Word Inputs
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