TECHNICAL DATA
IN74ACT323
8-Bit Bidirectional Universal
Shift Register with Parallel I/O
High-Speed Silicon-Gate CMOS
The IN74ACT323 is identical in pinout to the LS/ALS323,
HC/HCT323. The IN74ACT323 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The IN74ACT323 features a multiplexed parallel input/output data
port to achieve full 8-bit handling in a 20 pin package. Due to the large
output drive capability and the 3-state feature, this device is ideally suited
for interface with bus lines in a bus-oriented system.
ORDERING INFORMATION
IN74ACT323N Plastic
IN74ACT323DW SOIC
TA = -40° to 85° C for all packages
Two Mode-Select inputs and two Output Enable inputs are used to
choose the mode of operation as listed in the Function Table.
Synchronous parallel loading is accomplished by taking both Mode-
Select lines, S1 and S2, high. This places the outputs in the high-
impedance state, which permits data applied to the data port to be clocked
into the register. Reading out of the register can be accomplished when
the outputs are enabled. The active-low synchronous Reset overrides all
other inputs.
PIN ASSIGNMENT
•
•
•
•
•
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
LOGIC DIAGRAM
PIN 20=VCC
PIN 10 = GND
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
