DS8933MX

Overview

The DS8933MX is a dual line transceiver manufactured by National Semiconductor, now part of Texas Instruments. It features two receivers and operates within a plastic SOP-16 package with a length of 9.9 mm. The device supports differential outputs and utilizes differential Schmitt trigger inputs for signal integrity. It complies with EIA-422, ESDI, ST412, and ST506 interface standards. The component functions as a line driver or receiver with active shutdown capabilities for the receivers and includes tristatable receiver functionality.

Feature Summary

• Supports multiple legacy interface standards including EIA-422 and ST506
• Features differential Schmitt trigger inputs for noise immunity
• Includes active shutdown mode for receivers to reduce power consumption
• Provides tristatable receiver outputs for bus sharing applications

Applications

• Legacy serial communication systems requiring EIA-422 compliance
• Data acquisition equipment utilizing ST506 or ST412 interfaces
• Industrial control systems needing robust differential signaling
• Embedded systems requiring low-power standby modes via shutdown control

Procurement Notes

Verify RoHS compliance status as the source data indicates non-compliance. Confirm package dimensions match the 0.150 inch plastic SOP-16 specification. Ensure the supplier provides documentation for the EAR99 classification. Check for availability of the specific MX suffix variant from authorized distributors handling National Semiconductor inventory.

Selection Notes

Select this component when interfacing with legacy differential standards like EIA-422 or ST506. The differential Schmitt trigger input is suitable for noisy environments. Consider the SOP-16 package size for board layout constraints. Verify that the 70 °C maximum operating temperature meets the system requirements. The active shutdown feature is beneficial for power-sensitive designs.

Part Context

This device belongs to the family of line transceivers produced by National Semiconductor, which was acquired by Texas Instruments. It serves as a bridge between microprocessor logic levels and differential transmission lines. The SOP-16 package is common for dual-channel interface ICs in industrial and commercial applications during the era of its production.

Replacement Considerations

Check for direct pin-compatible replacements from Texas Instruments that may have updated RoHS compliance. Evaluate modern LVDS or RS-422 transceivers if legacy standard support is not strictly required. Verify that alternative components maintain the same differential Schmitt trigger input characteristics and shutdown functionality.