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Texas Instruments MAX3222CDBRG4 — Interface & Transceivers

MAX3222CDBRG4 RS-232 Transceiver, 250 kbps, 20-SSOP

MPNMAX3222CDBRG4
End of Life

Texas Instruments MAX3222CDBRG4, RS232 Transceiver, Full Duplex, 250kbps, 3V~5.5V, 2/2 Drivers/Receivers, 20-SSOP, 0°C~70°C, Active.

Texas Instruments MAX3222CDBRG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX3222CDBRG4 specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage3V ~ 5.5V
ProtocolRS232
Operating temperature0°C~70°C
DuplexFull
PackageTape & Reel (TR)
Data rate250kbps
Case20-SSOP (0.209\", 5.30mm Width)
Receiver hysteresis300 mV
Number of drivers (Receivers)2/2

Product details

Active RS-232 transceiver for mixed-voltage serial links

Rated for 250 kbps data rate, it is suited for point-to-point or multi-drop RS-232 links in commercial equipment such as desktop peripherals, point-of-sale terminals, and test instrumentation operating from 0°C to 70°C. The receiver hysteresis of 300 mV provides noise immunity on the bus, reducing bit errors in electrically noisy environments.

Buyers should verify the exact suffix for their BOM, as variations exist for different temperature grades or package options.

Frequently asked questions

Can MAX3222CDBRG4 be used at 5V supply?

Yes, the supply range of 3V to 5.5V covers both 3.3V and 5V rails, making it compatible with standard logic levels without additional regulation.

Is MAX3222CDBRG4 compatible with 3.3V systems?

Yes, the device operates from a 3V minimum supply, so it works directly on a 3.3V rail while still meeting RS-232 output levels.

What is the closest pin-compatible alternative to MAX3222CDBRG4 in this component family?

The MAX3222 family includes multiple temperature and package variants. The MAX3222CDBR (without the 'G4' suffix) is functionally equivalent in the same 20-SSOP package, differing only in lead-free/RoHS compliance marking. Always confirm the specific suffix against your BOM and assembly requirements.