Maxim Integrated MAX3221ECTE+, RS232 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 250kbps Data Rate, 3V to 5.5V Supply, 16-WQFN Exposed Pad, 0°C to 70°C, Tube.
| Parameter | Value |
|---|---|
| Type | Transceiver |
| Mounting | Surface Mount |
| Supply voltage | 3V ~ 5.5V |
| Protocol | RS232 |
| Operating temperature | 0°C ~ 70°C |
| Duplex | Full |
| Package | Tube |
| Data rate | 250kbps |
| Case | 16-WQFN Exposed Pad |
| Receiver hysteresis | 500 mV |
| Number of drivers (Receivers) | 1/1 |
It is designed for serial communication links where board space is tight and the supply rail can range from 3V to 5.5V, covering both 3.3V and 5V logic domains without a separate level shifter. Data rate is rated at 250kbps. The receiver hysteresis of 500 mV helps reject noise on longer cable runs. The package is 16-TQFN (5x5 mm). Surface-mount assembly is standard.
The MAX3222 is a dual driver/receiver RS232 transceiver, whereas the MAX3221ECTE+ is a single driver/receiver. The MAX3222 is not a direct pin-compatible replacement; the choice depends on whether your design needs one or two serial channels.
The MAX3221ECA is a different package variant (SSOP vs TQFN). Electrical specifications are similar, but the footprint differs. Verify the package compatibility on your board before substituting.