RS232 serial link in a small footprint
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.
MAX3221EETE+T RS232 Transceiver, 250kbps, 3V-5.5V, 16-TQFN
MPNMAX3221EETE+T
End of Life
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.
$6.68Ref. price · indicative, final on quote
Packaging16-WQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Transceiver |
| Mounting | Surface Mount |
| Supply 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 |
Product details
Frequently asked questions
What is the data rate of MAX3221EETE+T?
250 kbps — the standard RS232 ceiling. Sufficient for UART debug consoles, configuration ports, and low-speed sensor links.
What is a direct replacement for MAX3221EETE+T?
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.
Does MAX3221EETE+T operate at 3.3V?
Yes, 3.3V is within the 3V to 5.5V supply range. The part operates at 3.3V without issue.