RS562 transceiver for 3.3V serial links
RS562 is a single-supply variant of RS232 that operates from a 3V to 3.6V rail, making it a direct fit for 3.3V logic systems without needing a separate charge-pump or ±12V supply. The 116 kbps data rate covers standard asynchronous serial communication for terminals, industrial controllers, and point-of-sale equipment where the cable run stays within the RS562 distance envelope.
Supply voltage and signal levels
Rated for a 3V to 3.6V supply, the MAX563CWN+ answers the common question: yes, it operates at 3.3V. Because RS562 uses a single-ended output swing referenced to ground (unlike RS232's bipolar swing), the driver output levels are compatible with 3.3V logic inputs on the receiving side.
Housed in an 18-SOIC wide-body package (0.295" body width, 7.50 mm), the MAX563CWN+ uses the larger SOIC footprint that is not pin-compatible with the narrow 18-SOIC (0.150" body). Verify your PCB land pattern before ordering — the wide-body variant is less common in automated pick-and-place libraries and may require a separate footprint definition.
For designs that must survive -40°C to +85°C, look at Maxim's industrial-temperature RS562 transceivers in the same family.
The "+" suffix in the ordering code denotes the lead-free / RoHS-compliant finish — the earlier MAX563CWN (without the plus) was the tin-lead version. If your BOM specifies the non-RoHS variant, the MAX563CWN+ is the drop-in replacement with the same electrical specifications and package, just with the RoHS-compliant termination finish.