MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
General Description
Next-Generation Device Features
The MAX220–MAX249 family of line drivers/receivers is
intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is
not available.
These parts are especially useful in battery-powered systems, since their low-power shutdown mode reduces
power dissipation to less than 5µW. The MAX225,
MAX233, MAX235, and MAX245/MAX246/MAX247 use
no external components and are recommended for applications where printed circuit board space is critical.
♦ For Low-Voltage, Integrated ESD Applications
MAX3222E/MAX3232E/MAX3237E/MAX3241E/
MAX3246E: +3.0V to +5.5V, Low-Power, Up to
1Mbps, True RS-232 Transceivers Using Four
0.1µF External Capacitors (MAX3246E Available
in a UCSP™ Package)
♦ For Low-Cost Applications
MAX221E: ±15kV ESD-Protected, +5V, 1µA,
Single RS-232 Transceiver with AutoShutdown™
________________________Applications
PART
TEMP RANGE
PIN-PACKAGE
MAX220CPE+
0°C to +70°C
16 Plastic DIP
MAX220CSE+
0°C to +70°C
16 Narrow SO
MAX220CWE+
0°C to +70°C
16 Wide SO
MAX220C/D
0°C to +70°C
Dice*
MAX220EPE+
-40°C to +85°C
16 Plastic DIP
MAX220ESE+
-40°C to +85°C
16 Narrow SO
MAX220EWE+
-40°C to +85°C
16 Wide SO
MAX220EJE
-40°C to +85°C
16 CERDIP
MAX220MJE
-55°C to +125°C
16 CERDIP
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Contact factory for dice specifications.
Portable Computers
Low-Power Modems
Interface Translation
Battery-Powered RS-232 Systems
Multidrop RS-232 Networks
AutoShutdown and UCSP are trademarks of Maxim Integrated
Products, Inc.
Ordering Information
Ordering Information continued at end of data sheet.
Selection Table
Selection Table
Power
No. of
Nominal
Supply
RS-232
No. of
Cap. Value
(V)
Drivers/Rx Ext. Caps (µF)
+5
2/2
4
0.047/0.33
+5
2/2
4
0.1
+5
4/5
4
1.0 (0.1)
+5
5/5
0
—
+5
5/0
4
1.0 (0.1)
+5 and
2/2
2
1.0 (0.1)
+7.5 to +13.2
MAX232 (MAX202) +5
2/2
4
1.0 (0.1)
MAX232A
+5
2/2
4
0.1
MAX233 (MAX203) +5
2/2
0
—
MAX233A
+5
2/2
0
—
MAX234 (MAX204) +5
4/0
4
1.0 (0.1)
MAX235 (MAX205) +5
5/5
0
—
MAX236 (MAX206) +5
4/3
4
1.0 (0.1)
MAX237 (MAX207) +5
5/3
4
1.0 (0.1)
MAX238 (MAX208) +5
4/4
4
1.0 (0.1)
MAX239 (MAX209) +5 and
3/5
2
1.0 (0.1)
+7.5 to +13.2
MAX240
+5
5/5
4
1.0
MAX241 (MAX211) +5
4/5
4
1.0 (0.1)
MAX242
+5
2/2
4
0.1
MAX243
+5
2/2
4
0.1
MAX244
+5
8/10
4
1.0
MAX245
+5
8/10
0
—
Pin Configurations appear at end of data sheet. —
MAX246
+5
8/10
0
MAX247
+5
8/9
0
—
Functional Diagrams continued at end of data sheet.
MAX248
+5
8/8
4
1.0
UCSP is a trademark of Maxim Integrated Products, Inc.
MAX249
+5
6/10
4
1.0
Part
Number
MAX220
MAX222
MAX223 (MAX213)
MAX225
MAX230 (MAX200)
MAX231 (MAX201)
SHDN
& ThreeState
No
Yes
Yes
Yes
Yes
No
Rx
Active in
SHDN
—
—
✔
✔
—
—
Data Rate
(kbps)
120
200
120
120
120
120
No
No
No
No
No
Yes
Yes
No
No
No
—
—
—
—
—
—
—
—
—
—
120 (64)
200
120
200
120
120
120
120
120
120
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
—
—
✔
—
—
✔
✔
✔
✔
✔
120
120
200
200
120
120
120
120
120
120
Functional Diagrams
Features
Ultra-low-power, industry-standard pinout
Low-power shutdown
MAX241 and receivers active in shutdown
Available in SO
5 drivers with shutdown
Standard +5/+12V or battery supplies;
same functions as MAX232
Industry standard
Higher slew rate, small caps
No external caps
No external caps, high slew rate
Replaces 1488
No external caps
Shutdown, three state
Complements IBM PC serial port
Replaces 1488 and 1489
Standard +5/+12V or battery supplies;
single-package solution for IBM PC serial port
DIP or flatpack package
Complete IBM PC serial port
Separate shutdown and enable
Open-line detection simplifies cabling
High slew rate
High slew rate, int. caps, two shutdown modes
High slew rate, int. caps, three shutdown modes
High slew rate, int. caps, nine operating modes
High slew rate, selective half-chip enables
Available in quad flatpack package
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-4323; Rev 16; 7/10
