TITHVD1420DR
Overview
The THVD1420DR is a robust, low-power half-duplex RS-485/RS-422 transceiver designed for reliable data transmission in harsh industrial environments. It supports data rates up to 12Mbps and operates from a flexible 3V to 5.5V supply range, featuring high ESD protection and a wide common-mode voltage range of -7V to 12V. This transceiver is engineered with fail-safe circuitry to ensure a logic-high receiver output when the bus inputs are open, shorted, or idle.
Why Choose This Part
The device features extremely low power consumption with a 1.5 mA typical operating current and a 1 uA standby mode, making it suitable for power-sensitive applications. It provides 5V tolerant I/O and hot-plug capability, preventing bus disturbances during live insertion or removal of the module. Its wide operating temperature range of -40degC to 125degC ensures stable performance in extreme thermal environments.
Applications
Key Specifications
Getting Started
To evaluate this part, use the Texas Instruments THVD14xx evaluation module (EVM) to test signal integrity across various cable lengths. Ensure that a 120-ohm termination resistor is placed at both ends of the RS-485 bus to minimize reflections. When designing the PCB, place a 0.1 uF bypass capacitor as close as possible to the VCC pin to maintain stable operation during high-speed switching.
