DS8922AM/NOPB

Overview

The DS8922AM/NOPB is a dual differential line driver and receiver pair designed for RS-422 applications. It operates on a single 5V supply (4.5V to 5.5V) within the commercial temperature range of 0°C to 70°C. The device features a typical propagation delay of 12 ns and output skew of ±0.5 ns. It includes tri-state outputs with independent control functions, complementary driver outputs, and receiver input fail-safe circuitry. The package is a 16-pin SOIC.

Feature Summary

• Tri-state outputs with independent driver and receiver control
• Complementary driver outputs for low output skew
• Receiver input fail-safe circuitry to prevent erroneous states
• Glitch-free power up/down protection

Applications

• ST506 disk drive interfaces
• ST412 disk drive interfaces
• ESDI disk drive interfaces

Procurement Notes

Verify component authenticity through authorized channels. Confirm the datasheet revision matches SNLS373B. Check for the LIFEBUY status which indicates discontinuation from new designs. Ensure storage conditions protect against ESD damage as specified in the handling guidelines.

Selection Notes

Select this part for systems requiring dual RS-422 transceivers with precise timing characteristics. Verify that the 0°C to 70°C operating temperature range meets environmental requirements. Consider the 16-pin SOIC package constraints for PCB layout. Evaluate if the specific tri-state control logic aligns with system bus architecture needs.

Part Context

This component belongs to the DS8922/DS8922A/DS8923A family of high-speed RS-422 interface devices. It shares functional similarities with other Texas Instruments differential drivers but is distinct in its specific pinout and control logic configuration for dual pairs.

Replacement Considerations

Direct replacements include DS8922AMX/NOPB for tape-and-reel packaging. Other compatible options within the same family are DS8923AM/NOPB, though it features separate enable controls.