Active production — standard RS232 transceiver for industrial serial links
The MAX231EWE+: It integrates two drivers and two receivers in a full-duplex configuration, handling serial data at rates up to 120Kbps — sufficient for legacy RS232 links in PLCs, CNC controllers, and test equipment where the baud rate rarely exceeds 115.2 kbps. The supply scheme is dual-rail: a 5V logic rail plus a separate 7.5V to 13.2V charge-pump input for the RS232 driver outputs, which means the board must carry both voltages rather than relying on a single 5V rail with an internal doubler.
Package and temperature grade — SOIC-16 wide body, -40 to 85°C
Housed in a 16-SOIC wide-body package (7.50 mm body width), the MAX231EWE+ uses the standard RS232 transceiver footprint — the 0.295-inch width matches the common SOIC-16W land pattern used across the industry for dual-channel parts. Receiver hysteresis is specified at 500 mV, providing noise immunity on the RS232 bus lines in electrically noisy environments — a typical industrial backplane sees conducted noise in the 200-400 mV range, so the 500 mV threshold reduces false triggering without external filtering.
Compliance and sourcing — ROHS3, no exemptions, quoted to order
ROHS3 compliant (2015/863/EU) with no exemptions listed — the part ships without lead, mercury, cadmium, or the four phthalates, clearing EU and UKCA market entry without additional documentation.