TECHNICAL DATA
IN74HC158A
Quad 2-Input Data Selectors/Multiplexers
High-Performance Silicon-Gate CMOS
The IN74HC158A 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
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0 µA
ORDERING INFORMATION
IN74HC158AN Plastic
High Noise Immunity Characteristic of CMOS Devices
IN74HC158AD SOIC
TA = -55° to 125° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
FUNCTION TABLE
Inputs
Output
Outputs
Y0-Y3
Select
Enable
PIN 16 =VCC
PIN 8 = GND
H
X
L
H
L
L
A0-A3
B0-B3
H
X=don’t care
A0-A3,B0-B3=the levels of the respective
Data-Word Inputs
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
