100311QCX

Overview

The Fairchild Semiconductor 100311QCX is a monolithic quad line driver designed for low-power applications. It features two OR and two NOR outputs with a common enable input, providing pin and function compatibility with the 100112 and 100113 series. The device incorporates buffered inputs to minimize loading and includes internal pull-down resistors on all inputs. It operates within a voltage compensated range of -4.2V to -5.7V and offers 2000V ESD protection. The component is available in industrial grade temperature ranges when housed in PLCC packages.

Feature Summary

• Monolithic quad driver architecture with integrated OR and NOR logic functions
• Common enable input allows simultaneous control of sixteen 50Ω lines
• High electrostatic discharge (ESD) protection rating of 2000V
• Internal pull-down resistors ensure defined input states

Applications

• Low power RS-485 communication bus drivers
• Industrial data transmission systems requiring noise immunity
• Line driving circuits for digital signal processing interfaces

Procurement Notes

Verify the specific package variant against project requirements, as industrial temperature ratings are typically associated with PLCC configurations. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer representative. Ensure the ordering suffix matches the desired thermal and mechanical specifications for the target assembly process.

Selection Notes

Select this component when designing systems that require logical inversion alongside standard line driving capabilities. The built-in OR/NOR structure reduces external component count compared to discrete solutions. Consider the -4.2V to -5.7V operating range to ensure compatibility with existing negative supply rails in legacy or specialized industrial equipment designs.

Part Context

This part belongs to the 10031x family of low-power quad drivers from Fairchild Semiconductor. It serves as a functional successor to the 100113, offering approximately 50% power reduction while maintaining electrical compatibility. The series is engineered for robust performance in noisy environments where signal integrity and low power consumption are critical design constraints.

Replacement Considerations

The 100311QCX is pin-compatible with the National Semiconductor 100113 and 100112. Verify that replacement sources maintain the same voltage compensated operating range and ESD protection levels to ensure circuit continuity without redesign.