DS3691MX/NOPB

Overview

The DS3691MX/NOPB is a low-power Schottky TTL line driver designed to meet EIA RS-422 and RS-423 standards. It features TRI-STATE outputs, short circuit protection for both source and sink currents, and 100Ω transmission line drive capability. The device operates with a supply voltage range of 4.75V to 5.25V and supports an operating temperature range of 0°C to +70°C. In RS-422 mode, the typical supply current (ICC) is 9 mA per driver, while in RS-423 mode, it is 4.5 mA per driver. The output rise time is typically 120 ns to 200 ns under standard load conditions.

Feature Summary

• Dual RS-422 or Quad RS-423 Line Driver Configuration
• TRI-STATE Outputs with Internal Short Circuit Protection
• External Rise Time Control for Crosstalk Suppression

Applications

• RS-422 Differential Point-to-Point Interfaces
• RS-423 Single-Ended Multipoint Communication Systems
• Industrial Data Transmission Networks

Procurement Notes

Verify the component status as active on official Texas Instruments channels before procurement. Confirm that the SOIC-16 package dimensions align with the target PCB footprint. Ensure the operating environment remains within the specified 0°C to +70°C thermal limits to maintain electrical performance specifications.

Selection Notes

Select this component when designing systems requiring compatibility with AM26LS30 pinouts. Verify that the application utilizes single-ended drivers only if employing external waveshaping capacitors in RS-423 mode. Ensure the design accommodates the specific propagation delay characteristics required by the communication protocol.

Part Context

This part belongs to the DS3691 family of line drivers manufactured by Texas Instruments. It serves as a direct replacement for legacy National Semiconductor devices, maintaining identical functionality and pinout configurations. The MX suffix indicates a tape and reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

The DS3691M/NOPB is a compatible alternative offering the same SOIC-16 package and functional specifications. Both parts share identical electrical characteristics and pin assignments, allowing for direct substitution in existing designs without requiring schematic modifications.