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Texas Instruments MAX3222CDBR — Interface & Transceivers

MAX3222CDBR RS-232 Transceiver, Full Duplex, 250 kbps

MPNMAX3222CDBR
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Texas Instruments MAX3222CDBR RS-232 transceiver, full duplex, 250 kbps data rate, 3V to 5.5V supply, 2/2 drivers/receivers, 300 mV receiver hysteresis, 20-SSOP package, 0°C to 70°C operating temperature.

$2.4200Ref. price · indicative, final on quote
Texas Instruments MAX3222CDBR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX3222CDBR specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage3V ~ 5.5V
ProtocolRS232
Operating temperature0°C~70°C
DuplexFull
PackageTape & Reel (TR); Cut Tape (CT)
Data rate250kbps
Case20-SSOP (0.209\", 5.30mm Width)
Receiver hysteresis300 mV
Number of drivers (Receivers)2/2

Product details

RS-232 interface for 3V to 5.5V rails

It integrates two drivers and two receivers with a 300 mV receiver hysteresis, handling data rates up to 250 kbps. The wide supply range from 3V to 5.5V lets it bridge 5V peripheral buses directly onto a 3.3V system rail without a separate level translator.

If your application sees extended temperatures or automotive environments, look for the industrial or automotive grade variants in the same family.

Housed in a 20-SSOP (0.209", 5.30 mm width) surface-mount package, the MAX3222CDBR occupies a compact board area. Standard SSOP-20 land patterns apply; no exposed pad to route.

Frequently asked questions

What is the data rate of MAX3222CDBR?

The MAX3222CDBR supports a data rate of 250 kbps, which is sufficient for standard RS-232 communication up to that speed. For higher throughput, consider a transceiver with a faster slew rate.

Is MAX3222CDBR compatible with 3.3V systems?

Yes, the supply voltage range of 3V to 5.5V includes 3.3V, so it operates directly on a 3.3V rail without extra level shifting. The RS-232 output levels are generated internally from the supply.