SN65HVD1786DR

Drivers, Receivers, Transceivers Overview

The SN65HVD1786DR is a half-duplex RS-485 transceiver manufactured by Texas Instruments. It operates within a supply voltage range of 3.15 V to 5.5 V and supports data rates up to 1 Mbps. The device features 70-V fault protection on the bus pins, ensuring robustness against power supply shorts, cable miswiring, and connector failures. It utilizes an 8-pin SOIC surface-mount package with dimensions of 4.9 mm in length and 1.75 mm in height. The component functions reliably across an extended temperature range from -40°C to 125°C.

Drivers, Receivers, Transceivers Feature Summary

• Incorporates 70-V fault protection to safeguard internal circuitry against common bus interface errors such as short circuits and wiring mistakes.
• Provides offset receiver thresholds for fail-safe operation, maintaining stable logic levels during open-circuit or idle bus conditions.
• Supports low receiver loading, enabling connection of up to 256 nodes on a single RS-485 bus network.

Drivers, Receivers, Transceivers Applications

• Industrial automation systems requiring reliable serial communication over long distances.
• Building automation networks utilizing RS-485 protocols for sensor and actuator integration.
• Metering infrastructure including electricity and gas metering systems.

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix DR indicates tape-and-reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to implementation. Ensure the selected variant matches the required operational temperature range and voltage specifications for the target application environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component when high-voltage fault tolerance is critical for bus integrity. Compare against standard RS-485 transceivers if 70-V protection is unnecessary to optimize cost. Verify that the 1 Mbps data rate meets system timing requirements. Consider the 8-pin SOIC footprint constraints during PCB layout design.

Drivers, Receivers, Transceivers Part Context

This part belongs to the SN65HVD178x series of RS-485 transceivers. The series includes variants with different fault protection levels and data rates. The SN65HVD1786DR specifically offers 1 Mbps speed with 70-V protection, distinguishing it from lower-speed or lower-protection models within the same family.

Drivers, Receivers, Transceivers Replacement Considerations

SN65HVD1786D is the tube-packaged equivalent of the DR suffix variant. SN65HVD1782QDRQ1 is an automotive-grade alternative with AEC-Q100 qualification. Verify pin compatibility and electrical parameters before substituting other RS-485 devices.