Both chips are 2-driver, 2-receiver RS-232 transceivers. They are designed to bridge the gap between low-voltage logic (TTL/CMOS) and the higher voltage requirements of the RS-232 standard. Both operate from 3.0V to 5.5V.

When you look under the hood, the performance profiles begin to diverge. 1. Data Rate Thresholds

High-end versions like the SP3232EH could scream at minimum data rates of 460kbps , outrunning the standard MAX3232 in high-speed applications. The Exclusive Choice The choice usually came down to the specific mission:

Then came the SP3232 from MaxLinear (formerly Sipex) . While it shared the same footprint and pinout, it had a few tricks up its sleeve for the scrappy engineer.