DS8923M

Overview

The DS8923M is a dual line transceiver manufactured by National Semiconductor, now part of Texas Instruments. It integrates two receivers and drivers in a single package, supporting EIA-422, ESDI, ST412, and ST506 interface standards. The device features differential outputs and differential Schmitt trigger inputs for noise immunity. Key electrical characteristics include a maximum high-level input current of 0.00002 A. The component operates within a temperature range of up to 70 °C and is housed in a 16-pin Plastic Small Outline (SOP-16) package with a width of 0.150 inches.

Feature Summary

• Integrates two active receivers that remain functional during shutdown modes
• Provides tristatable receiver outputs for bus isolation control
• Utilizes differential Schmitt trigger input characteristics for signal integrity

Applications

• EIA-422 communication interfaces
• ST506 disk drive controller connections
• ESDI peripheral interface systems

Procurement Notes

Verify the RoHS compliance status, as the available data indicates the component is not compliant. Confirm the manufacturer origin, noting that National Semiconductor assets are managed by Texas Instruments. Ensure the SOP-16 package dimensions match the design requirements before integration into the final assembly.

Selection Notes

Select this component when designing systems requiring dual transceiver functionality for legacy or specific industrial standards like ST506 and ESDI. Consider the commercial temperature limit of 70 °C when evaluating environmental constraints. Verify that the differential output configuration aligns with the target network topology and impedance requirements.

Part Context

This device belongs to the line driver and receiver category within the drivers and interfaces classification. It serves as a physical layer interface solution for serial data transmission. The product line includes variants such as the DS8923AMX, which shares similar functional specifications but may differ in packaging or compliance certifications.

Replacement Considerations

Check for direct equivalents from Texas Instruments or other manufacturers offering dual RS-422/RS-485 compatible transceivers. Ensure pin compatibility and voltage level matching if substituting with modern alternatives.