TECHNICAL DATA
IN74ACT164
8-Bit Serial-Input/Parallel-Output
Shift 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.
ORDERING INFORMATION
IN74ACT164N Plastic
IN74ACT164D SOIC
TA = -40° to 85° C for all packages
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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
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
Clock
X
Outputs
Reset
L
A1 A2
X X
X X
H D
D H
QA QB ... QH
L
L
... L
H
no change
H
D QAn ... QGn
D QAn ... QGn
H
PIN 14 =VCC
PIN 7 = GND
D = data input
X = don’t care
QAn - QGn = data shifted from the previous stage on a
rising edge at the clock input.
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
