DS8922AMX/NOPB

Overview

The DS8922AMX/NOPB 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 at temperatures from 0°C to 70°C. The device features a typical propagation delay of 12 ns and an output skew of ±0.5 ns. It provides complementary driver outputs with high differential or common-mode input voltage ranges of ±7V. Receiver sensitivity is specified at ±0.2V, incorporating 70 mV typical hysteresis for improved noise margin. The component includes receiver input fail-safe circuitry and glitch-free power-up/down functionality.

Feature Summary

• Dual differential line driver and receiver pairs designed for RS-422, ST506, ST412, and ESDI standards
• Complementary driver outputs with low output skew and high common-mode input voltage tolerance
• Receiver input fail-safe circuitry ensures logical one state when inputs are open
• Glitch-free power up/down circuitry prevents erroneous signals during system transitions

Applications

• ESDI disk drive interface applications
• ST504 and ST412 disk drive interfaces
• RS-422 communication systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation before procurement. The 'MX' designation indicates surface mount packaging in an SOIC-16 case. Confirm that the commercial temperature range (0°C to 70°C) aligns with the operational requirements of the target application environment.

Selection Notes

Select this component for designs requiring dual differential signaling with TTL/CMOS compatibility. Ensure the design accommodates the ±7V common-mode input range and utilizes twisted pair or parallel wire transmission lines. Verify that the 12 ns propagation delay meets the timing constraints of the system architecture.

Part Context

This part belongs to the DS8922/DS8922A/DS8923A family of RS-422 transceivers. The DS8922 variant features independent control functions shared between the driver and receiver pairs, distinguishing it from the DS8923A which offers separate control functions for drivers and receivers.

Replacement Considerations

Public confirmed substitute part numbers: DS8922AN/NOPB, DS8922AM/NOPB.