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Texas Instruments MAX3222IPWR — Interface & Transceivers

MAX3222IPWR RS-232 Transceiver, 2/2 Drivers, 250kbps

MPNMAX3222IPWR
Active

Texas Instruments MAX3222IPWR RS-232 transceiver, full duplex, 2/2 drivers/receivers, 250kbps data rate, 3V~5.5V supply, 20-TSSOP package, -40°C~85°C operating temperature.

$2.1000Ref. price · indicative, final on quote
Texas Instruments MAX3222IPWR datasheet (PDF)
Packaging20-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX3222IPWR specifications
ParameterValue
TypeTransceiver
MountingSurface Mount
Supply voltage3V ~ 5.5V
ProtocolRS232
Operating temperature-40°C~85°C
DuplexFull
PackageTape & Reel (TR); Cut Tape (CT)
Data rate250kbps
Case20-TSSOP (0.173\", 4.40mm Width)
Receiver hysteresis300 mV
Number of drivers (Receivers)2/2

Product details

RS-232 interface IC with 2/2 driver/receiver count

The receiver hysteresis of 300 mV provides noise immunity on the bus without external filtering.

At 250 kbps this transceiver handles standard RS-232 rates for legacy peripherals, barcode scanners, and serial debug ports. The 300 mV receiver hysteresis is a practical guard against noise on longer cable runs inside a cabinet.

The ROHS3 compliance (lead-free) is current for global shipping.

20-TSSOP footprint — what it connects to

The 20-TSSOP package (4.40 mm width, 0.65 mm pitch) is a standard fine-pitch surface-mount footprint shared across many RS-232 transceivers in this family.

Frequently asked questions

What are the differences between MAX3222IPWR and MAX3222E?

The MAX3222E variant typically adds ±15 kV ESD protection on the RS-232 bus pins, while the base MAX3222IPWR does not carry that enhanced ESD rating.

Can MAX3222IPWR be used as a drop-in replacement for MAX232?

Not directly — the MAX232 uses a 16-pin DIP/SOIC package and a different pinout, while the MAX3222IPWR comes in a 20-TSSOP. Functionally both are RS-232 transceivers, but the footprint and pin mapping differ, so a PCB layout change is required.