74LS128 DIP Quad 2-Input NOR Line Driver IC

The 74LS128 DIP is a TTL logic integrated circuit that contains four independent 2-input NOR line drivers in a 14-pin Dual Inline Package (DIP). It belongs to the 74LS Low Power Schottky logic family and is specifically designed for applications requiring high-current line driving and reliable signal transmission.

Unlike standard logic gates, the 74LS128 provides enhanced output drive capability, making it suitable for driving low-impedance loads, long PCB traces, coaxial cables, twisted-pair lines, and capacitive loads while maintaining excellent signal integrity. Its high-speed switching and TTL-compatible inputs make it ideal for digital communication and interface applications.

Key Features -

• Quad independent 2-input NOR line drivers

• High current output drive capability

• Designed for low impedance and capacitive loads

• TTL compatible logic levels

• Low Power Schottky technology

• High-speed switching performance

• Excellent noise immunity

• Standard DIP-14 package

Specifications -

• Product type - TTL Logic IC

• IC Model - 74LS128

• Logic Function - Quad 2-input NOR Line Driver

• Package type - DIP-14

• Logic family - 74LS TTL

• Operating voltage - 4.75V to 5.25V DC

• Propagation delay - 12ns Typical

• High-level output current - -42.4mA Maximum

• Low-level output current - 48mA Maximum

• Input high voltage - 2.0V Minimum

• Operating temperature - 0C to 70C

Applications -

• Digital communication systems

• Clock distribution circuits

• Line driving applications

• Long PCB trace signal transmission

• Industrial control systems

• Computer and embedded systems

• Bus interface circuits

• Data transmission networks