| Drivers per package | 2 |
| Receivers per package | 2 |
| Logic voltage (Min) (V) | 3.3 |
| Data rate (Max) (kbps) | 250 |
| Main supply voltage (Nom) (V) | 3.3, 5 |
| Features | Powerdown |
| ESD HBM (kV) | 15 |
| Rating | Catalog |
| Operating temperature range (C) | -40 to 85, 0 to 70 |
| Vout (Typ) (V) | 5.4 |
- RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM)
- Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards
- Operates With 3-V to 5.5-V VCC Supply
- Operates Up to 250 kbps
- Two Drivers and Two Receivers
- Low Standby Current: 1 μA Typical
- External Capacitors: 4 × 0.1 μF
- Accepts 5-V Logic Input With 3.3-V Supply
- Alternative High-Speed Pin-Compatible Device (1 Mbps)
- SNx5C3222
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The MAX3222 consists of two line drivers, two line receivers, and a dual charge-pump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/μs driver output slew rate.
The MAX3222 can be placed in the power-down mode by setting PWRDOWN low, which draws only 1 μA from the power supply. When the device is powered down, the receivers remain active while the drivers are placed in the high-impedance state. Receiver outputs also can be placed in the high-impedance state by setting EN high.
