DS26LS31CN

Overview

The DS26LS31CN is a quad differential line driver designed for digital data transmission over balanced lines. It meets EIA Standard RS-422 and Federal Standard 1020 requirements, providing unipolar differential drive to twisted-pair or parallel-wire transmission lines. The device features TRI-STATE outputs and logically ANDed complementary outputs with an enable/disable function common to all four drivers. Inputs are LS-compatible and represent one unit load. Operating conditions include a supply voltage of 4.75V to 5.25V and a temperature range of 0°C to +70°C. Electrical characteristics specify output high/low voltages of 2.5V/0.5V at ±20mA loads, typical input-to-output delay of 10ns, and typical output skew of 2.0ns.

Feature Summary

• Provides unipolar differential drive capability for balanced transmission lines
• Features TRI-STATE outputs that do not load the line when VCC is 0V
• Includes four line drivers in a single package with common enable/disable logic
• Inputs are LS-compatible and defined as one unit load

Applications

• Digital data transmission over balanced lines
• RS-422 compliant communication systems
• Federal Standard 1020 applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and environmental rating. Confirm RoHS compliance status and lead finish details via the latest Package Option Addendum. Ensure the component matches the required commercial temperature range specifications before procurement.

Selection Notes

Select this component for designs requiring RS-422 compatible quad differential driving. Verify that the system operates within the specified 4.75V to 5.25V supply voltage range. Ensure the application environment remains within the 0°C to +70°C operating temperature limits. Check pin compatibility if replacing legacy AM26LS31 components.

Part Context

The DS26LS31C series includes variants such as the DS26LS31M for military temperature ranges. The CN suffix specifically denotes the PDIP package variant intended for commercial temperature operation. This part belongs to the broader family of high-speed differential line drivers used in industrial and telecommunications interfaces.

Replacement Considerations

The datasheet explicitly states the device is pin compatible with the AM26LS31. Designers should verify that the replacement maintains the same electrical characteristics and package dimensions.