RS-232 transceiver for legacy serial links
The Maxim Integrated MAX202CWE+ is a full-duplex RS-232 transceiver in a 16-SOIC package, handling two drivers and two receivers at a data rate of 120 kbps. It operates from a 4.5V to 5.5V supply and is specified over the commercial temperature range of 0°C to 70°C. This part is a direct fit for legacy RS-232 interfaces in industrial controllers, point-of-sale terminals, and test equipment where the 5V rail is already present.
Data rate and receiver hysteresis — what they mean for the link
At 120 kbps the MAX202CWE+ is sized for standard RS-232 communication up to about 15 metres of cable — enough for serial console, modem, or low-speed peripheral links. The 500 mV of receiver hysteresis provides noise immunity on the incoming lines, which matters when the cable runs through an electrically noisy environment like a factory floor or next to a switching power supply.
Package and supply — board-fit constraints
The 16-SOIC wide-body (7.50 mm width) footprint is a common RS-232 transceiver layout, so the MAX202CWE+ drops onto existing pads without a board spin. The 4.5V to 5.5V supply range means it runs directly from a 5V rail; no extra regulator is needed, but it will not work from a 3.3V-only system without a boost converter.
Lifecycle and sourcing — still in active production
The MAX202CWE+ carries an Active lifecycle status and is ROHS3 compliant. It remains a current-production part, so there is no last-time-buy pressure.