ST3232BTR

Product Overview

STMicroelectronics ST3232BTR is a surface-mount RS232 transceiver IC in a 16-TSSOP package. It provides two drivers and two receivers for full-duplex serial data exchange, with a 400 kbps data rate and a supply range of 3 V to 5.5 V. The device is specified for operation from -40°C to 85°C and includes 300 mV receiver hysteresis. Its 16-TSSOP form factor supports compact board layouts where a dual-channel RS232 interface is required.

Key Features

• Two drivers and two receivers support full-duplex RS232 communication.
• The transceiver operates from a 3 V to 5.5 V supply.
• The data rate is 400 kbps.
• Receiver hysteresis is 300 mV.
• Operating temperature range is -40°C to 85°C.
• Surface-mount 16-TSSOP package with 0.173 in, 4.40 mm width.

Applications

• Full-duplex RS232 serial links between a host computer and a peripheral device.
• Two-channel serial data exchange between embedded boards and serial modules.
• Serial communication between a control unit and an RS232 peripheral.

Design & Procurement Notes

For board design, the 16-TSSOP package and surface-mount format favor compact layouts, while the 4.40 mm width should be checked against adjacent components and connector routing. The 3 V to 5.5 V supply range allows connection to common logic rails, and the 400 kbps rate supports serial data links. Full-duplex operation with two drivers and two receivers can reduce the number of transceiver devices needed for bidirectional channels. The 300 mV receiver hysteresis and -40°C to 85°C range should be considered when selecting input thresholds and thermal margins for the target assembly.