TECHNICAL DATA

KK74ACT245

Octal 3-State Noninverting

Bus Transceiver

High-Speed Silicon-Gate CMOS

ORDERING INFORMATION

KK74ACT245N Plastic

KK74ACT245DW SOIC

The KK74ACT245 is identical in pinout to the LS/ALS245,

HC/HCT245. The KK74ACT245 may be used as a level converter for

interfacing TTL or NMOS outputs to High Speed CMOS inputs.

The KK74ACT245 is a 3-state noninverting transceiver that is used for

2-way asynchronous communication between data buses. The device has

an active-low Output Enable pin, which is used to place the I/O ports into

high-impedance states. The Direction control determines whether data

flows from A to B or from B to A.

• 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

PIN 10 = GND

FUNCTION TABLE

Control Inputs

Output

Enable

Direction

Operation

L

L

Data Transmitted

from Bus B to

Bus A

L

H

Data Transmitted

from Bus A to

Bus B

H

X

Buses Isolated

(High Impedance

State)

X = don’t care

1