DS26LS31N

Overview

The DS26LS31N is a quad high-speed 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 operates from a single 5V supply with a voltage range of 4.75V to 5.25V. It features TRI-STATE outputs and an enable/disable function common to all four drivers. The inputs are LS-compatible and represent one unit load. The component is housed in a 16-pin PDIP package and supports commercial temperature operation from 0°C to +70°C.

Feature Summary

• Provides unipolar differential drive capability for balanced transmission lines
• Features TRI-STATE outputs with a common enable and disable function
• Includes output short-circuit protection and complementary outputs
• Inputs are LS-compatible and present a minimal unit load

Applications

• Digital data transmission over balanced lines
• RS-422 compliant communication systems
• Two-wire balanced system configurations

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm whether the part is available as a new design recommendation or through a lifetime-buy program due to potential obsolescence status. Ensure that the procurement channel provides valid traceability and authenticity guarantees for legacy semiconductor components.

Selection Notes

Select this component when designing systems requiring RS-422 compliance with a standard 5V power supply. Verify that the application environment remains within the 0°C to +70°C commercial operating range. Consider the 16-pin PDIP footprint during PCB layout planning. Evaluate if the typical 10 ns propagation delay and 2.0 ns output skew meet the timing requirements of the target data transmission speed.

Part Context

This device belongs to the DS26LS31 family of quadruple differential line drivers manufactured by Texas Instruments. It serves as a pin-compatible alternative to the AM26LS31 series. The component is engineered for high-speed data transfer applications utilizing balanced twisted-pair or parallel-wire transmission media.

Replacement Considerations

The datasheet explicitly identifies the AM26LS31 as a pin-compatible replacement. Designers should verify electrical characteristics and temperature ranges when substituting between these specific part numbers.