DS8923AMX/NOPB

Overview

The DS8923AMX/NOPB is a TRI-STATE RS-422 dual differential line driver and receiver pair manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V at temperatures from 0°C to 70°C. The device features a typical propagation delay of 12ns, with channel-to-channel skew limited to 0.5ns typical. Receiver sensitivity is ±200mV with 70mV hysteresis. Complementary outputs provide unipolar differential drive. The AMX suffix indicates an SOIC-16 tape-and-reel package.

Feature Summary

• Independent driver and receiver control functions for flexible bus management
• Glitch-free power-up/down circuitry prevents erroneous transmission during system transitions
• Receiver input fail-safe ensures logical high state when inputs are open
• High common-mode voltage tolerance up to ±7V

Applications

• ESDI disk drive interface systems
• ST506 and ST412 storage standards
• RS-422 compliant data transmission lines

Procurement Notes

Verify the LIFEBUY status before finalizing designs, as production may be discontinued. Confirm the SOIC-16 tape-and-reel packaging matches assembly requirements. Ensure compatibility with existing TTL/CMOS logic levels in the target application environment.

Selection Notes

Select this component over the DS8922A variant when independent enable controls for drivers and receivers are required. Verify that the 0°C to 70°C operating temperature range meets environmental specifications. Check if the 12ns propagation delay satisfies timing constraints for the specific data rate.

Part Context

This part belongs to the DS8922/DS8923 family of TRI-STATE RS-422 transceivers. It shares core electrical characteristics with the DS8922A but differs in control logic architecture. The 'AMX' designation specifies the plastic small-outline package with reel shipping format.

Replacement Considerations

The DS8922AMX/NOPB serves as a functional alternative where shared enable logic is acceptable. Verify pinout compatibility and control signal inversion differences between the two variants before substitution.