DS8923AMX

Overview

The DS8923AMX 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 channel-to-channel skew of 2.0 ns. Receiver sensitivity is specified at ±200 mV, and the input hysteresis is typically 70 mV. The component utilizes a 16-pin SOIC package.

Feature Summary

• Features separate enable inputs for independent control of the driver and receiver pairs.
• Includes fail-safe circuitry that forces the receiver output high when inputs are open.
• Provides glitch-free power-up and power-down protection to prevent erroneous signals.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm compliance status and packaging details. Confirm the active lifecycle stage before finalizing procurement plans. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this component when independent tri-state control of drivers and receivers is required. Verify compatibility with TTL or CMOS logic levels. Ensure the system design accommodates the specified common-mode voltage range and meets the necessary noise margin requirements defined by the standard.

Part Context

This part belongs to the DS8922/DS8922A/DS8923A family of dual differential transceivers. While functionally similar to the DS8922A, the DS8923A distinguishes itself through separate enable pins for the driver and receiver sections, allowing for more granular bus management in complex interface architectures.

Replacement Considerations

The DS8922AMX/NOPB serves as a lead-free alternative within the same product family. Verify pinout compatibility and ensure the replacement maintains the required separate enable functionality for the specific application design.

FAQ

How does the DS8923A differ from the DS8922A?

The DS8923A provides separate enable inputs for the driver and receiver pairs, whereas the DS8922A uses a single common enable signal for both functions.

What happens if the receiver inputs are left open?

The integrated fail-safe circuitry ensures the receiver output assumes the logical one state when the inputs are open.