The Texas Instruments MAX232DWRG4 is a 5V-only RS232 transceiver in a 16-SOIC wide-body package. This is the classic MAX232 architecture — widely used in legacy serial ports, industrial terminal interfaces, and point-of-sale equipment where the system already has a 5V rail and the baud rate stays under 120 Kbps.
TI no longer manufactures this specific suffix.
Pin-compatible alternatives in the MAX232 family
The MAX232DWRG4 shares the same base product number (MAX232) and 16-SOIC footprint with several active siblings. Both operate from 4.5V to 5.5V, deliver 120 Kbps, and use the same 2/2 driver/receiver configuration. If your board was laid out for the DWRG4 and you need a factory-active part, the IDR variant drops in without a PCB change — just verify the wider temperature spec is acceptable for your environment.
Supply voltage and operating environment
This transceiver is strictly a 5V part — supply range is 4.5V to 5.5V. There is no 3.3V option in this variant. Not rated for automotive or outdoor deployment.