Description
SN65HVD1785DR RS-485 / RS-422 Transceiver – ±70V Fault Protected
The SN65HVD1785DR from Texas Instruments is a high-reliability RS-485 and RS-422 differential transceiver designed for robust industrial communication networks. Featuring ±70V fault protection, this device ensures reliable operation even in harsh electrical environments with high voltage transients, ground shifts, or wiring faults. It supports half-duplex and full-duplex communication with excellent noise immunity and low power consumption. Supplied in a compact SOIC-8 surface-mount package, the SN65HVD1785DR is ideal for space-constrained designs. This transceiver is widely used in industrial automation, PLC systems, motor drives, building automation, energy meters, and long-distance serial communication where reliability and signal integrity are critical.
| Specification | Details |
|---|---|
| Part Number | SN65HVD1785DR |
| Manufacturer | Texas Instruments |
| Interface Type | RS-485 / RS-422 Transceiver |
| Fault Protection | ±70V |
| Data Rate | Up to 250kbps |
| Supply Voltage | 3V – 5.5V |
| Package Type | SOIC-8 (DR) |
Applications
- Industrial automation and PLC communication
- Factory and process control networks
- Motor drives and servo controllers
- Energy meters and smart grid systems
- Building automation and HVAC controls
- Long-distance serial communication links
How to Use
- Connect A and B lines to the differential RS-485 bus.
- Provide proper termination resistors for long cable runs.
- Ensure correct DE and RE control for transmit/receive operation.
- Operate within the specified supply voltage range.
- Use proper grounding to maximize noise immunity.
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