RS-232 transceiver, 5 drivers / 3 receivers, 250 kbps
The MAX3237EEAI+ is a full-duplex RS-232 transceiver from Analog Devices, packing five drivers and three receivers into a 28-SSOP package. It handles data rates up to 250 kbps — fast enough for legacy serial ports, industrial terminals, and point-of-sale gear that still talks RS-232. The 500 mV receiver hysteresis cleans up noisy lines — useful when the cable runs across a factory floor or through a machine enclosure.
Industrial temp and SSOP footprint
The 28-SSOP body (5.30 mm width, 0.209" pitch) is a common surface-mount footprint; the supplier device package is the same 28-SSOP, so the PCB land pattern matches the datasheet recommendation. Package ships in tube — not tape-and-reel — which means it arrives in anti-static tubes for manual placement or low-volume pick-and-place. If your line runs reels only, factor in a tube-to-reel transfer or order the tape-and-reel variant separately.
No official successor or pin-compatible alternative is listed for this part. If you need a second source for a high-volume BOM, the closest functional match would be another 5/3 RS-232 transceiver in the same package — but no direct cross-reference is published by the manufacturer. For now, this is the single-sourced line item on the BOM; hedge with an RFQ for a multi-year forecast.