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IN74HC620

Octal 3-State Inverting Bus Transceiver High-Performance Silicon-Gate CMOS

Integral Corp. 

TECHNICAL DATA

Octal 3-State Inverting

Bus Transceiver

High-Performance Silicon-Gate CMOS

IN74HC620

The IN74HC620 is identical in pinout to the LS/ALS620. The

device inputs are compatible with standard CMOS outputs; with pullup

resistors, they are compatible with LS/ALSTTL outputs.

The IN74HC620 is a 3-state 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.

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2.0 to 6.0 V

• Low Input Current: 1.0 µA

• High Noise Immunity Characteristic of CMOS Devices

ORDERING INFORMATION

IN74HC620N Plastic

IN74HC620DW SOIC

TA = -55° to 125° C for all packages

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 20=VCC

PIN 10 = GND

FUNCTION TABLE

Control Inputs

Output Direction

Enable

L

L

H

H

H

L

L

H

Operation

Data Transmitted

from Bus B to

Bus A (inverted)

Data Transmitted

from Bus A to

Bus B (inverted)

Buses Isolated

(High Impedance

State)

441

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