ST3232EBTR

Product Overview

STMicroelectronics ST3232EBTR is a surface-mount RS232 transceiver intended for serial interface paths that require two transmit channels and two receive channels. The device supports full-duplex communication and operates from a 3V to 5.5V supply, allowing integration with system voltages in that range. It is supplied in a 16-TSSOP package with a 0.173 inch, 4.40mm width, and its specified data rate is 250kbps. The receiver hysteresis value is 500 mV, and the operating temperature range is -40°C to 85°C. The part is mounted by surface-mount techniques and is a 2/2 transceiver for RS232 protocol use.

Key Features

• Includes two drivers and two receivers for RS232 serial communication.
• Supports full-duplex operation, allowing transmit and receive paths to be active at the same time.
• Specified data rate is 250kbps.
• Supply voltage range is 3V to 5.5V.
• Receiver hysteresis is 500 mV.
• Package is 16-TSSOP with 0.173 inch, 4.40mm width.
• Mounting type is surface mount.
• Operating temperature range is -40°C to 85°C.

Applications

• Serial data links between microcontrollers and RS232 devices.
• Full-duplex communication channels for embedded control systems.
• RS232 serial paths in systems using 3V to 5.5V supply rails.

Design & Procurement Notes

Design considerations include matching the board supply to the 3V to 5.5V operating range and confirming that the required serial link does not exceed the 250kbps data rate. Because the device provides two drivers and two receivers with full-duplex operation, the circuit layout should maintain distinct transmit and receive signal paths. The 16-TSSOP surface-mount package requires surface-mount assembly and a footprint compatible with the 4.40mm body width. The 500 mV receiver hysteresis and -40°C to 85°C temperature range should be reviewed against the intended operating environment and signal conditions. The package and mounting type should also be considered during PCB layout, assembly, and serviceability planning.