TECHNICAL DATA

KK74AC323

8-Bit Bidirectional Universal

Shift Register with Parallel I/O

High-Speed Silicon-Gate CMOS

ORDERING INFORMATION

KK74AC323N Plastic

KK74AC323DW SOIC

The

KK74AC323

is

identical

in

pinout

to

the

LS/ALS323,

HC/HCT323. The device inputs are compatible with standard CMOS

outputs; with pullup resistors, they are compatible with LS/ALS outputs.

The KK74AC323 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.

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-

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.

• Outputs Directly Interface to CMOS, NMOS, and TTL

PIN ASSIGNMENT

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 µA; 0.1 µA @ 25°C

• High Noise Immunity Characteristic of CMOS Devices

• Outputs Source/Sink 24 mA

LOGIC DIAGRAM

PIN 10 = GND

1