DS8922N

Overview

The DS8922N is a dual differential line driver and receiver pair manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of 0°C to 70°C. The device features a typical propagation delay of 12 ns with a channel-to-channel output skew of ±0.5 ns. It provides complementary driver outputs and includes TRI-STATE functionality for both drivers and receivers. The package type is PDIP with 16 pins.

Feature Summary

• Complementary driver outputs provide low output skew for precise timing applications.
• Receiver input fail-safe circuitry ensures logical high state when inputs are open.
• Glitch-free power-up/down circuitry prevents erroneous signals during system transitions.
• Compatible with TTL and CMOS logic families.

Applications

• ESDI disk drive interface circuits
• ST506 and ST412 disk drive standards
• EIA Standard RS-422 communication systems

Procurement Notes

Verify the specific part number suffix against official documentation, as variations may indicate different packaging or environmental ratings. Confirm current production status, as some variants in this family may be marked as Lifebuy or obsolete. Ensure compatibility with existing PCB footprints and thermal requirements before finalizing procurement decisions.

Selection Notes

Select the DS8922N when dual differential signaling with TRI-STATE control is required for RS-422 or legacy disk drive interfaces. Consider the DS8923A if independent driver and receiver enable controls are needed instead of paired control. Verify that the through-hole PDIP package meets mechanical constraints and that the 0°C to 70°C temperature range suits the operational environment.

Part Context

This component belongs to the DS8922/DS8922A/DS8923A family of dual differential line drivers and receivers designed for high-speed data transmission. These devices are specifically engineered to meet EIA RS-422, ST506, ST412, and ESDI standards. The family offers robust performance with low propagation delays and high noise immunity, making them suitable for demanding industrial and storage applications.

Replacement Considerations

The DS8922A is a direct functional equivalent within the same family. For designs requiring independent driver and receiver enables, the DS8923A serves as a compatible alternative. Verify pinout compatibility and electrical characteristics before substitution.