100311QI

Overview

The Fairchild Semiconductor 100311QI is a monolithic quad driver belonging to the ECL 100K series. It integrates two OR and two NOR outputs with a common enable input, designed for high-speed digital applications. The device operates within a voltage compensated range of -4.2V to -5.7V and features 50 kΩ pull-down resistors on all inputs. It provides 2000V ESD protection and offers pin/function compatibility with the 100113 and 100112 models. The component supports industrial grade temperature ranges in specific packages.

Feature Summary

• Integrates dual OR and dual NOR logic functions with a shared enable control
• Provides 2000V electrostatic discharge (ESD) protection capability
• Features buffered common input to minimize loading effects on driving circuits
• Includes internal 50 kΩ pull-down resistors on all input terminals

Applications

• High-speed data transmission line driving
• Digital signal processing systems requiring ECL logic
• Multiplexer and demultiplexer output stages
• Logic gate implementations in communication equipment

Procurement Notes

Verify the manufacturer source carefully as Fairchild Semiconductor has undergone integration into ON Semiconductor. Confirm that the ordering suffix matches current system requirements due to potential nomenclature changes during this transition. Ensure the specific package variant aligns with your design constraints before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring combined OR/NOR functionality in a single package. It serves as a direct replacement for the 100113 and 100112 in compatible designs. Consider the operating voltage range and temperature specifications to ensure suitability for the intended industrial environment.

Part Context

This part belongs to the National Semiconductor 100K series of ECL logic devices, which were subsequently acquired by Fairchild Semiconductor. The 100311QI specifically addresses the need for low-power quad drivers with flexible logic output configurations. It maintains backward compatibility with earlier industry-standard drivers while offering improved power efficiency characteristics.

Replacement Considerations

The 100311QI is functionally compatible with the 100113 and 100112 models. Designers can substitute these parts directly if pinout and electrical parameters match the existing circuit requirements without modification.