TISN65HVD1782
Overview
The SN65HVD1782 is a robust half-duplex RS-485 transceiver designed to survive harsh industrial environments where high-voltage bus faults may occur. It features integrated protection against bus-pin faults up to plus or minus 30V and includes a failsafe receiver for reliable communication in open, short, or idle bus conditions. This device is pin-compatible with the industry-standard SN75176 while offering significantly improved electrical durability and lower power consumption.
Why Choose This Part
The primary advantage is its wide fault protection range of plus or minus 30V, which prevents device failure during accidental shorts to power supplies. It supports a flexible supply range from 3.15V to 5.5V and offers 16-kV HBM ESD protection on bus pins. Engineers benefit from a low 1 microamp standby current and a 4 mA quiescent current, making it suitable for power-constrained industrial nodes.
Applications
Key Specifications
Getting Started
To evaluate this transceiver, design a PCB with standard 8-SOIC footprints or use a DIP-8 breadboard adapter for prototyping. Ensure a 0.1 microfarad bypass capacitor is placed close to the VCC pin and apply proper termination resistors (typically 120 ohms) at both ends of the RS-485 bus. No special software drivers are required, as the IC interfaces directly with standard UART peripherals on microcontrollers.
