ST232BTR

Product Overview

The ST232BTR from STMicroelectronics is a 16-TSSOP interface integrated circuit configured as a 2/2 full-duplex RS232 transceiver. It operates from a 4.5V to 5.5V supply and is intended for surface-mount board layouts using a 0.173 inch, 4.40 mm wide package. The device provides separate transmit and receive channels for serial data movement at a 220Kbps data rate, with receiver hysteresis of 500 mV. Its operating temperature range is -40°C to 85°C, making it suitable for general electronic assemblies where a 5V RS232 serial interface is required.

Key Features

• 2/2 RS232 transceiver architecture with full-duplex operation
• Operates from a 4.5V to 5.5V supply
• Supports a data rate of 220Kbps
• Receiver hysteresis is 500 mV
• Housed in a 16-TSSOP surface-mount package, 0.173 inch, 4.40 mm wide
• Operating temperature range is -40°C to 85°C

Applications

• Point-to-point RS232 serial links between a 5V logic device and an external serial port
• Full-duplex serial data channels in embedded controller boards
• Surface-mount serial interface conditioning for compact electronic assemblies
• Separate transmit and receive paths for serial communication equipment

Design & Procurement Notes

When selecting the ST232BTR, verify that the board provides a 4.5V to 5.5V supply. The 16-TSSOP package requires surface-mount assembly and a footprint compatible with 0.173 inch, 4.40 mm width. For communication design, confirm that the application requires two drivers and two receivers with full-duplex RS232 operation and that the 220Kbps data rate is appropriate for the target link. The 500 mV receiver hysteresis should be considered when evaluating receiver input threshold behavior, and the -40°C to 85°C operating range should be checked against the intended environment. The 2/2 driver and receiver count should be matched to the number of serial transmit and receive paths in the system.