RS-232 transceiver, 250 kbps ceiling, dual-port
The Texas Instruments MAX232EIDR is a full-duplex RS-232 transceiver in a 16-SOIC package, integrating two drivers and two receivers for serial communication over ±5 V to ±15 V levels from a single 5 V supply.
250 kbps — practical limit for the serial link
The 250 kbps data rate sets the maximum bit rate on the RS-232 bus. If your UART runs at 115.2 kbps, this part has margin; if you need 1 Mbps, the MAX232EIDR cannot close the eye. The 500 mV hysteresis on the receiver inputs helps reject noise on longer cable runs, which is useful in factory-floor or outdoor telecom environments where ground potential differences and EMI are present.
Active lifecycle — no LTB, no obsolescence concern
ROHS3 compliant per the listing, so it passes current EU and global restrictions without exemption paperwork.