TISN65C3232D
Overview
The SN65C3232D is a dual-channel RS-232 line driver and receiver designed for low-power communications. It operates from a wide supply range of 3V to 5.5V and features an internal charge pump to generate the required RS-232 voltage levels using only four 0.1 uF external capacitors. This transceiver supports high-speed data rates up to 1 Mbit/s while maintaining a typical supply current of only 300 uA.
Why Choose This Part
The device offers excellent flexibility by accepting 5V logic inputs even when running on a 3.3V supply, simplifying mixed-voltage designs. Its robust ESD protection of +/-15 kV on bus pins reduces the need for external protection components. Additionally, the high data rate of 1 Mbit/s allows it to support non-standard high-speed serial protocols beyond the typical 115.2 kbps limit.
Applications
Getting Started
To integrate this transceiver, place four 0.1 uF ceramic capacitors close to the VCC, V+, V-, and C1/C2 pins as specified in the datasheet to ensure stable charge pump operation. Ensure the logic-side pins (DIN/ROUT) are connected to your MCU UART while the bus-side pins (DOUT/RIN) connect to the RS-232 connector. For prototyping, this SOIC-16 package can be used with standard 1.27mm pitch breakout boards.
