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.
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| Drivers per package | 2 |
| Receivers per package | 2 |
| Logic voltage (min) (V) | 3.3 |
| Data rate (max) (Mbps) | 0.25 |
| Main supply voltage (nom) (V) | 3.3, 5 |
| Features | Powerdown |
| ESD HBM (kV) | 15 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| Vout (typ) (V) | 5.4 |
| SOIC (DW) | 20 | 131.84 mm² 12.8 x 10.3 |
| SSOP (DB) | 20 | 56.16 mm² 7.2 x 7.8 |
| TSSOP (PW) | 20 | 41.6 mm² 6.5 x 6.4 |
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