MAX3221EEAE - Maxim Integrated Products - ±15kV ESD-Protected, 1uA, 3.0V to 5.5V, 250kbps, RS-232 T



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±15kV ESD-Protected, 1uA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown





The MAX3221E/MAX3223E/MAX3243E are 3V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/wakeup features, high datarate capabilities, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 AirGap Discharge, to ±8kV using IEC 1000-4-2 Contact Discharge, and to ±15kV using the Human Body Model. The MAX3221E/MAX3223E/MAX3243E achieve a 1µA supply current with Maxim’s revolutionary Auto Shutdown™ feature. They save power without changes to the existing BIOS or operating system by entering low-power shutdown mode when the RS-232 cable is disconnected, or when the transmitters of the connected peripherals are off.

The transceivers have a proprietary low-dropout transmitter output stage, delivering true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump.

The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. Each device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels.

The MAX3221E contains just one driver and one receiver, making it the smallest single-supply RS-232 transceiver.

The MAX3223E has two drivers and two receivers. The MAX3243E is a complete 3-driver/5-receiver serial port ideal for notebook or sub notebook computers. It also includes two non inverting receiver outputs that are always active, allowing external devices to be monitored without forward biasing the protection diodes in circuitry that may be powered down.

The MAX3221E, MAX3223E, and MAX3243E are available in space-saving SSOP packages.





♦ ESD Protection for RS-232 I/O Pins:

±15kV—Human Body Model

±8kV—IEC1000-4-2, Contact Discharge

±15kV—IEC1000-4-2, Air-Gap Discharge

♦ Latchup Free

♦ 1µA Supply Current

♦ 250kbps Guaranteed Data Rate

♦ 6V/µs Guaranteed Slew Rate

♦ Meets EIA/TIA-232 Specifications Down to 3.0V

♦ Smallest Single-Supply RS-232 Transceiver


♦ Guaranteed Mouse Driveability (MAX3243E)

♦ Small 0.1µF Capacitors







Product Photos


Product Training Modules

Lead (SnPb) Finish for COTS
Long-Term Supply Program

Standard Package



Integrated Circuits (ICs)


Interface - Drivers, Receivers, Transceivers







Number of Drivers/Receivers




Voltage - Supply

3 V ~ 5.5 V

Mounting Type

Surface Mount

Package / Case

16-SSOP (0.209", 5.30mm Width)

Supplier Device Package




Competitive Advantage:


Warranty :180 days !
Free shipping: Order over $1000 win a free shipment fee
(goods weight below 3Kg) ,during 20130901-20130930 .

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