Maxim Integrated MAX3221EETE+T, RS232 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 250kbps, 3V to 5.5V, -40°C to 85°C, Surface Mount, 16-TQFN Exposed Pad.
| Parameter | Value |
|---|---|
| Type | Transceiver |
| Mounting type | Surface Mount |
| Voltage | 3V ~ 5.5V |
| Protocol | RS232 |
| Operating temperature | -40°C ~ 85°C |
| Duplex | Full |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Data rate | 250kbps |
| Case | 16-WQFN Exposed Pad |
| Receiver hysteresis | 500 mV |
| Number of drivers (Receivers) | 1/1 |
Industrial temperature range (-40°C to 85°C) suits factory-floor serial links, PLC programming ports, and outdoor telecom gear. The 500 mV receiver hysteresis provides noise margin on long cable runs — a practical benefit when the serial cable passes a VFD or motor drive.
ROHS3 compliant.
250 kbps — the standard RS232 ceiling. Sufficient for UART debug consoles, configuration ports, and low-speed sensor links.
No official direct replacement is listed in the manufacturer's cross-reference. The MAX3221EETE+T is the active, ROHS3-compliant surface-mount variant in the 16-TQFN package. For a through-hole or different package, check the MAX3221 family; pin compatibility varies by package.
Yes, 3.3V is within the 3V to 5.5V supply range. The part operates at 3.3V without issue.