IN74ACT164
8-B
IT
S
ERIAL
-I
NPUT
/P
ARALLEL
-O
UTPUT
S
HIFT REGISTER
High-Speed Silicon-Gate CMOS
The IN74ACT164 is identical in pinout to the LS/ALS164,
HC/HCT164. The IN74ACT164 may be used as a level converter
for interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The IN74ACT164 is an 8-bit, serial-input to parallel-output shift
register. Two serial data inputs, A1 and A2, are provided so that
one input may be used as a data enable. Data is entered on each
rising edge of the clock. The active-low asynchronous Reset
overrides the Clock and Serial Data inputs.
•
TTL/NMOS Compatible Input Levels
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1.0
µA;
0.1
µA
@ 25°C
Outputs Source/Sink 24 mA
•
•
•
•
ORDERING INFORMATION
IN74ACT164N Plastic
IN74ACT164D SOIC
T
A
= -40° to 85° C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Rese
t
L
H
H
H
Inputs
Clock
A1 A2
X
X
X
H
D
X
X
D
H
Outputs
Q
A
Q
B
... Q
H
L ... L
no change
D Q
An
... Q
Gn
D Q
An
... Q
Gn
L
PIN 14 =V
CC
PIN 7 = GND
D = data input
X = don’t care
Q
An
- Q
Gn
= data shifted from the previous
stage on a rising edge at the clock input.
1
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