SL74HCT245

System Logic

Semiconductor

SLS

Octal 3-State Noninverting Bus Transceiver

High-Performance Silicon-Gate CMOS

The SL74HCT245 is identical in pinout to the LS/ALS245.This

device may be used as a level converter for interfacing TTL or NMOS

outputs to High Speed CMOS inputs.

The SL74HCT245 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

ORDERING INFORMATION

SL74HCT245N Plastic

SL74HCT245D SOIC

° to 125° C for all packages

PIN ASSIGNMENT

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

LOGIC DIAGRAM

PIN 10 = GND