RS-232 transceiver for legacy serial bridging
It operates from a single 3V to 5.5V supply, which means it can sit on either a 3.3V or 5V logic rail without a separate level shifter. The receiver hysteresis is specified at 500 mV, which provides noise immunity on the serial line — useful when the cable run picks up coupled interference in an electrically noisy chassis.
Supply voltage and temperature envelope
The wide supply range (3V to 5.5V) means this transceiver can be powered from a common 3.3V or 5V rail, simplifying the power tree on mixed-voltage boards.
Package and footprint fit
Housed in a 20-TSSOP (0.173", 4.40 mm width) surface-mount package, the SN75C3223EPW occupies a compact footprint on the PCB. The supplier device package is also 20-TSSOP, so no footprint mismatch between the order code and the land pattern.