DS8923AN/NOPB

Overview

The DS8923AN/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 and supports an operating temperature range of 0 °C to 70 °C. The device features a typical propagation delay of 12 ns with a maximum of 20 ns, and a typical output skew of ±0.5 ns. It provides complementary driver outputs and includes TRI-STATE functionality with separate control for drivers and receivers. The package is a 16-pin PDIP (NFG).

Feature Summary

• Complementary driver outputs provide low output skew.
• Separate enable controls for driver and receiver sections.
• Receiver input fail-safe circuitry prevents erroneous states when inputs are open.
• Glitch-free power-up and power-down protection.

Applications

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

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and environmental compliance. Confirm availability status as the component may be subject to lifecycle changes or limited production runs. Ensure that the selected variant matches the required pin configuration and thermal characteristics for the intended PCB layout.

Selection Notes

Select this component for designs requiring independent control of driver and receiver tri-state functions. Verify that the 0 °C to 70 °C commercial temperature range meets system requirements. Ensure the 5 V supply voltage aligns with the system's power architecture. Consider the PDIP package constraints if surface-mount alternatives are preferred.

Part Context

This part belongs to the DS8922/DS8923A family of RS-422 transceivers. It shares core electrical specifications with the SOIC-packaged variants but differs in physical housing. The 'AN' suffix indicates the PDIP package option. It serves as a direct functional equivalent to other members of the series regarding signal integrity and protocol compliance.

Replacement Considerations

The DS8923AM/NOPB offers identical electrical performance in a 16-pin SOIC package. Verify footprint compatibility before substitution. Other family members like the DS8922A share similar specs but have coupled enable controls rather than separate ones.