SN65HVD1781DRG4

The Texas Instruments SN65HVD1781DRG4 is a fault-protected RS-485 transceiver designed for robust operation in demanding environments. It offers significant protection against overvoltage faults, including direct shorts to power supplies and mis-wiring, with bus-pin fault protection up to ±70V.

This transceiver operates from a wide supply voltage range of 3.15V to 5.5V, making it versatile for various applications. It supports RS-422 and RS-485 protocols with a data rate of up to 1 Mbps and features a half-duplex configuration. The device includes a failsafe receiver for open-circuit, short-circuit, and idle-bus conditions, ensuring reliable communication.

Packaged in an 8-SOIC (0.154", 3.90mm Width) surface-mount form factor, the SN65HVD1781DRG4 is suitable for integration into compact designs. It also boasts low power consumption, with a standby supply current of only 1 µA maximum and a quiescent current of 4 mA during operation. High ESD protection to ±16kV HBM on bus pins further enhances its durability.

This transceiver is pin-compatible with industry-standard SN75176, facilitating easy upgrades or replacements in existing designs. Its robust features make it ideal for industrial automation, motor control, and communication systems where signal integrity and protection are critical.