SN75C3221 Description
The SN65C3221 and SN75C3221 consist of one line driver, one line receiver, and a dual chargepump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). These devices providethe electrical interface between an asynchronous munication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3V to 5.5-V supply.
SN75C3221 Key Features
- Operate with 3-V to 5.5-V VCC supply
- Operate up to 1 Mbit/s
- Low standby current : 1 μA typical
- External capacitors : 4 x 0.1 μF
- Accepts 5-V logic input with 3.3-V supply
- RS-232 bus-pin ESD protection exceeds ±15 kV
- Auto-powerdown feature automatically disables