IN74ACT623

1

High-Speed Silicon-Gate CMOS

The IN74ACT623 is identical in pinout to the LS/ALS623,

HC/HCT623. The IN74ACT623 may be used as a level converter

for interfacing TTL or NMOS outputs to High Speed CMOS

inputs.

The IN74ACT623 is a 3-state noninverting transceiver that is

used for 2-way communication between data buses. Two

separate enables are available. The enable for bus A to B is

active-high, the enable for bus B to A is active-low.

• 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

ORDERING INFORMATION

IN74ACT623N Plastic

IN74ACT623DW SOIC

packages

PIN ASSIGNMENT

FUNCTION TABLE

Control Inputs

Output

Enable

Direction

Operation

L

L

Data

Transmitted

from Bus B to

Bus A

H

H

Data

Transmitted

from Bus A to

Bus B

H

L

Buses Isolated

L

H

(High

Impedance

State)

LOGIC DIAGRAM

PIN 10 = GND