RS232 transceiver for 3V to 5.5V systems
It handles serial communication at data rates up to 250 kbps, which covers the common 115.2 kbps and 230.4 kbps baud rates used in industrial terminals, POS equipment, and embedded debug consoles. The wide supply range from 3V to 5.5V means it plays nicely with both legacy 5V backplanes and modern 3.3V microcontrollers without a separate level shifter.
At 250 kbps this transceiver is fast enough for standard RS232 links up to about 15 meters of cable at 115.2 kbps. If your application needs to push 921.6 kbps or 1 Mbps, this part will not get there — you would step up to a MAX3223 or a MAX3232 variant rated for 1 Mbps. For the majority of RS232 ports on PLCs, barcode scanners, and serial printers, 250 kbps is ample headroom.
No exposed pad, no special thermal management needed at the 1 mA typical supply current.
That means no end-of-life notice pending, no last-time-buy scramble. For dual-source peace of mind, the MAX3222 family has multiple speed and package variants, but the IDBR suffix (SSOP, tape-and-reel) is the most widely stocked.