EVALUATION KIT AVAILABLE
MAX3222E/MAX3232E/MAX3237E/
MAX3241E/MAX3246E
±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,
Up to 1Mbps, True RS-232 Transceivers
General Description
The MAX3222E/MAX3232E/MAX3237E/MAX3241E/
MAX3246E +3.0V-powered EIA/TIA-232 and V.28/V.24
communications interface devices feature low power consumption, high data-rate capabilities, and enhanced
electrostatic-discharge (ESD) protection. The enhanced
ESD structure protects all transmitter outputs and
receiver inputs to ±15kV using IEC 1000-4-2 Air-Gap
Discharge, ±8kV using IEC 1000-4-2 Contact Discharge
(±9kV for MAX3246E), and ±15kV using the Human Body
Model. The logic and receiver I/O pins of the MAX3237E
are protected to the above standards, while the transmitter output pins are protected to ±15kV using the Human
Body Model.
A proprietary low-dropout transmitter output stage delivers
true RS-232 performance from a +3.0V to +5.5V power
supply, using an internal dual charge pump. The charge
pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. Each device guarantees operation at data rates of 250kbps while maintaining RS-232
output levels. The MAX3237E guarantees operation at
250kbps in the normal operating mode and 1Mbps in the
MegaBaud™ operating mode, while maintaining RS-232compliant output levels.
The MAX3222E/MAX3232E have two receivers and two
transmitters. The MAX3222E features a 1µA shutdown
mode that reduces power consumption in battery-powered portable systems. The MAX3222E receivers remain
active in shutdown mode, allowing monitoring of external
devices while consuming only 1µA of supply current. The
Functional Diagrams
MAX3222E and MAX3232E are pin, package, and functionally compatible with the industry-standard MAX242
and MAX232, respectively.
The MAX3241E/MAX3246E are complete serial ports
(three drivers/five receivers) designed for notebook and
subnotebook computers. The MAX3237E (five drivers/
three receivers) is ideal for peripheral applications that
require fast data transfer. These devices feature a shutdown mode in which all receivers remain active, while
consuming only 1µA (MAX3241E/MAX3246E) or 10nA
(MAX3237E).
The MAX3222E, MAX3232E, and MAX3241E are available in space-saving SO, SSOP, TQFN and TSSOP packages. The MAX3237E is offered in an SSOP package.
The MAX3246E is offered in the ultra-small 6 x 6 UCSP™
package.
Next-Generation Device Features
♦ For Space-Constrained Applications
MAX3228E/MAX3229E: ±15kV ESD-Protected,
+2.5V to +5.5V, RS-232 Transceivers in UCSP
♦ For Low-Voltage or Data Cable Applications
MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA,
2Tx/2Rx, RS-232 Transceivers with ±15kV
ESD-Protected I/O and Logic Pins
Applications
Battery-Powered Equipment
Cell Phones
Smart Phones
Cell-Phone Data Cables
Notebook, Subnotebook, and Palmtop Computers
Printers
xDSL Modems
Ordering Information
PART
MAX3222ECTP+
TEMP RANGE
0°C to +70°C
PIN-PACKAGE
20 TQFN-EP**
(5mm x 5mm)
MAX3222ECUP+
0°C to +70°C
20 TSSOP
MAX3222ECAP+
0°C to +70°C
20 SSOP
MAX3222ECWN+
0°C to +70°C
18 Wide SO
MAX3222ECPN+
0°C to +70°C
18 Plastic DIP
MAX3222EC/D+
0°C to +70°C
Dice*
MAX3222EETP+
-40°C to +85°C
20 TQFN-EP**
(5mm x 5mm)
MAX3222EEUP/V+
-40°C to +85°C
20 TSSOP
MAX3222EEUP+
-40°C to +85°C
20 TSSOP
MAX3222EEAP+
-40°C to +85°C
20 SSOP
MAX3222EEWN+
-40°C to +85°C
18 Wide SO
MAX3222EEPN+
-40°C to +85°C
18 Plastic DIP
MAX3232ECAE+
0°C to +70°C
16 SSOP
MAX3232ECWE+
0°C to +70°C
16 Wide SO
MAX3232ECPE+
0°C to +70°C
16 Plastic DIP
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Dice are tested at TA = +25°C, DC parameters only.
**EP = Exposed pad.
/V denotes an automotive qualified part.
Ordering Information continued at end of data sheet.
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
MegaBaud and UCSP are trademarks of Maxim Integrated
UCSP is a trademark of Maxim Integrated Products, Inc.
Products, Inc.
Pin Configurations, Selector Guide, and Typical Operating
Circuits appear at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-1298; Rev 12; 12/10
