The receiver hysteresis of 300mV provides noise immunity on longer cable runs typical of industrial control panels and point-of-sale terminals.
At 250kbps the part comfortably handles standard UART speeds up to 115200 baud with margin. If your application requires 1Mbps or higher (e.g., for firmware update over RS232), step up to the MAX3232E family — the CPWR is specced for the 250kbps tier and will not maintain signal integrity at faster rates.
For outdoor telecom cabinets or engine-bay RS232 links, the industrial-temperature MAX3232IPWR (-40°C to 85°C) is the correct ordering code.
There is no last-time-buy notice, and Texas Instruments continues to support this package variant through authorized distribution. For dual-sourcing resilience, the MAX3232IPWR (industrial temp, same 16-TSSOP footprint) is a documented alternate — just confirm the temperature grade matches your environment.
16-TSSOP footprint — layout and assembly
The 16-TSSOP body measures 4.40mm wide with a 0.65mm pin pitch, a common footprint shared with many TI RS232 transceivers. Surface-mount reflow follows standard lead-free profiles; no exposed pad or thermal management is required at the 250kbps data rate and typical 1mA supply current.