ST232CDR

Product Overview

The ST232CDR from STMicroelectronics is a surface-mount RS232 transceiver IC in a 16-SOIC package (16-SO). It provides two drivers and two receivers in a full-duplex configuration for serial data links. The device operates from a 4.5 V to 5.5 V supply and is specified for a 220 Kbps data rate. Receiver hysteresis is 500 mV, and the operating temperature range is 0°C to 70°C.

Key Features

• Two drivers and two receivers support full-duplex RS232 communication.
• Rated data rate of 220 Kbps for serial interface links.
• The 500 mV receiver hysteresis contributes to defined input switching behavior.
• Supply voltage range of 4.5 V to 5.5 V.
• 16-SOIC surface-mount package with 0.154-inch, 3.90 mm width.
• Operating temperature range of 0°C to 70°C.

Applications

• Serial data links between microcontroller-based boards and RS232-compatible equipment.
• Point-to-point communication interfaces in embedded control and instrumentation assemblies.
• Terminal, modem, or peripheral serial data exchange paths requiring two transmit and two receive channels.

Design & Procurement Notes

When selecting this transceiver, confirm that the host system provides a 4.5 V to 5.5 V supply and that the assembly remains within 0°C to 70°C. The 16-SOIC footprint supports surface-mount layout, but the board land pattern and clearance should match the 0.154-inch, 3.90 mm package width before layout. Designers should also verify that the required serial speed is within the 220 Kbps rating and that the full-duplex 2/2 driver and receiver arrangement matches the intended RS232 signal path for the selected interface.