74LS645 DIP-20 Octal Bus Transceiver IC (3-State Outputs, TTL, 5V)

Description -

The 74LS645 DIP is a TTL logic integrated circuit that functions as an octal bidirectional bus transceiver in a 20-pin Dual Inline Package (DIP). It belongs to the 74LS Low Power Schottky logic family and is designed for bidirectional data communication, bus interfacing, and memory communication in digital systems.

The device contains eight non-inverting bidirectional transceiver channels with 3-state outputs. Data flow is controlled by a Direction (DIR) input, while the active LOW Output Enable (OE) input places the outputs in a high-impedance state for efficient bus sharing. The 74LS645 is widely used in microprocessor systems, memory interfaces, embedded systems, and digital communication circuits.

Key Features -

• Octal bidirectional bus transceiver

• Eight non-inverting data channels

• Direction control for bidirectional data transfer

• 3-state outputs for bus interfacing

• Active LOW output enable

• Low Power Schottky technology

• TTL compatible logic levels

• Standard DIP-20 package

Specifications -

• Product type - TTL Logic IC

• IC Model - 74LS645

• Equivalent IC - 74645

• Logic Function - Octal Bus Transceiver

• Package type - DIP-20

• Logic family - 74LS TTL

• Operating voltage - 4.75V to 5.25V DC

• Number of channels - 8

• Data direction control - Bidirectional

• Output type - 3-State TTL

• Operating temperature - 0C to 70C

Applications -

• Data bus interfacing

• Microprocessor systems

• Memory communication

• Embedded systems

• Digital communication equipment

• Industrial automation

• Bus buffering

• Computer peripherals