What this RS-232 transceiver does for your serial link
The TRS202EIDW is a 2-driver, 2-receiver RS-232 transceiver from Texas Instruments, operating in full duplex mode at 120 kbps. It handles the voltage-level translation between a 5V UART and the ±12V RS-232 bus, so you don't need a separate level shifter or charge-pump controller.
Data rate and signal margin at the bus
At 120 kbps, this transceiver is fast enough for legacy RS-232 links up to about 15 meters — think barcode scanners, serial printers, and industrial modems. The 500 mV receiver hysteresis cleans up noise on long cables, reducing bit errors without external filtering. If your application needs 1 Mbps or higher (e.g., high-speed instrumentation), the TRS202EIDW won't keep up; you'd step to a 3V-to-5.5V part like the MAX3232 family. For 120 kbps links, the hysteresis margin is a real advantage over cheaper transceivers that skip it.
Housed in a 16-SOIC (0.295-inch body width, 7.50 mm), the TRS202EIDW uses a standard footprint that routes easily on two-layer boards. The 0.050-inch pitch doesn't demand fine-line etching, and the wide body gives good thermal contact to the copper pour for heat sinking. For automated pick-and-place, confirm the tube-to-tape conversion with your assembler.
It is RoHS3 compliant (lead-free), so it meets current EU and global environmental requirements without a waiver. No stock-holding claim; we source through authorized distribution and verified independent channels.