IN74HC158A
Q
UAD
2-I
NPUT
D
ATA
S
ELECTORS
/M
ULTIPLEXERS
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.
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0
碌A(chǔ)
High Noise Immunity Characteristic of CMOS Devices
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ORDERING INFORMATION
IN74HC158AN Plastic
IN74HC158AD SOIC
T
A
= -55擄 to 125擄 C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
PIN 16 =V
CC
PIN 8 = GND
Inputs
Output
Select
Enable
H
X
L
L
L
H
Outputs
Y0-Y3
H
A
0
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A
3
B
0
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B
3
X=don鈥檛 care
A0-A3,B0-B3=the levels of the
respective Data-Word Inputs
1
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