MAX3222CAP+ Maxim, MAX3222CAP+ Datasheet

MAX3222CAP+

Manufacturer Part Number

MAX3222CAP+

Description

TRANSCIEVER; RS-232; -25 TO V; 0.4 V (MAX.); 0.3 MA (TYP.); 235 KBPS (TYP.)

Manufacturer

Maxim

Datasheet

1.MAX3222CAP.pdf (17 pages)

Specifications of MAX3222CAP+

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

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________________General Description

The MAX3222/MAX3232/MAX3237/MAX3241 trans-

ceivers have a proprietary low-dropout transmitter out-

put stage enabling true RS-232 performance from a

3.0V to 5.5V supply with a dual charge pump. The

devices require only four small 0.1µF external charge-

pump capacitors. The MAX3222, MAX3232, and

MAX3241 are guaranteed to run at data rates of

120kbps while maintaining RS-232 output levels. The

MAX3237 is guaranteed to run at data rates of 250kbps

in the normal operating mode and 1Mbps in the

MegaBaud™ operating mode, while maintaining RS-232

output levels.

The MAX3222/MAX3232 have 2 receivers and 2

drivers. The MAX3222 features a 1µA shutdown mode

that reduces power consumption and extends battery

life in portable systems. Its receivers remain active in

shutdown mode, allowing external devices such as

modems to be monitored using only 1µA supply cur-

rent. The MAX3222 and MAX3232 are pin, package,

and functionally compatible with the industry-standard

MAX242 and MAX232, respectively.

The MAX3241 is a complete serial port (3 drivers/

5 receivers) designed for notebook and subnotebook

computers. The MAX3237 (5 drivers/3 receivers) is ideal

for fast modem applications. Both these devices feature

a shutdown mode in which all receivers can remain

active while using only 1µA supply current. Receivers R1

(MAX3237/MAX3241) and R2 (MAX3241) have extra out-

puts in addition to their standard outputs. These extra

outputs are always active, allowing external devices

such as a modem to be monitored without forward bias-

ing the protection diodes in circuitry that may have V

completely removed.

The MAX3222, MAX3237, and MAX3241 are available

in space-saving TSSOP and SSOP packages.

________________________Applications

Typical Operating Circuits appear at end of data sheet.

19-0273; Rev 7; 1/07

MegaBaud and UCSP are trademarks of Maxim Integrated Products, Inc.

*Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and other patents pending.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Transceivers Using Four 0.1µF External Capacitors

3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232

Notebook, Subnotebook, and Palmtop Computers

High-Speed Modems

Battery-Powered Equipment

Hand-Held Equipment

Peripherals

Printers

________________________________________________________________ Maxim Integrated Products

♦ For Smaller Packaging:

♦ For Integrated ESD Protection:

♦ For Low-Voltage or Data Cable Applications:

_________________Pin Configurations

_______________Ordering Information

Ordering Information continued at end of data sheet.

__Next Generation Device Features

MAX3222CUP+

MAX3222CAP+

MAX3222CWN+

MAX3222CPN+

Denotes lead-free package.

MAX3228E/MAX3229E: +2.5V to +5.5V RS-232

Transceivers in UCSP™

MAX3222E/MAX3232E/MAX3237E/MAX3241E*/

MAX3246E: ±15kV ESD-Protected, Down to 10nA,

3.0V to 5.5V, Up to 1Mbps, True RS-232

Transceivers

MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA,

2 Tx/2 Rx RS-232 Transceivers with ±15kV

ESD-Protected I/O and Logic Pins

PART

TOP VIEW

Pin Configurations continued at end of data sheet.

T2OUT

R2IN

TEMP RANGE

C1+

C2+

C1-

C2-

0°C to +70°C

V+

V-

MAX3222

DIP/SO

PIN-PACKAGE

20 TSSOP

20 SSOP

18 SO

18 Plastic Dip

SHDN

GND

T1OUT

R1IN

R1OUT

T2IN

R2OUT

T1IN

W18+1

U20+2

A20+1

CODE

P18+5

PKG

Related parts for MAX3222CAP+

MAX3222CAP+ Summary of contents

Page 1

... MAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, 2 Tx/2 Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins _______________Ordering Information PART TEMP RANGE MAX3222CUP+ 0°C to +70°C MAX3222CAP+ 0°C to +70°C MAX3222CWN+ 0°C to +70°C MAX3222CPN+ 0°C to +70°C + Denotes lead-free package. Ordering Information continued at end of data sheet. ...

Page 2

... Note 1: V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed 13V. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...

Page 3

... Transmitter Output Voltage T3OUT loaded with 3kΩ to GND, T1OUT and T2OUT loaded with 2.5mA each TIMING CHARACTERISTICS—MAX3222/MAX3232/MAX3241 (V = +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2 PARAMETER Maximum Data Rate R = 3kΩ Receiver Propagation Delay R_IN to R_OUT, C Receiver Output Enable Time Normal operation ...

Page 4

... C1–C4 = 0.1µF (Note 2 PARAMETER R = 3kΩ MBAUD = GND V = 3.0V to 4.5V Maximum Data Rate one transmitter switching, MBAUD = 4.5V to 5.5V one transmitter switching, MBAUD = V Receiver Propagation Delay R_IN to R_OUT, C Receiver Output Enable Time Normal operation Receiver Output Disable Time ...

Page 5

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors _____________________________Typical Operating Characteristics (continued +3.3V, 235kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ MAX3241 TRANSMITTER OUTPUT VOLTAGE vs. LOAD ...

Page 6

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors ______________________________________________________________Pin Description PIN MAX3222 MAX3232 MAX3237 DIP/SO SSOP 1 1 — ...

Page 7

... 2500pF 3kΩ MAX3237 MegaBaud Operation ), the MAX3237 transmitters guar- CC < 4.5V. For 5V ±10% CC 0.1µ C1+ V+ C1- MAX3222 C2+ V- MAX3232 MAX3237 C2- MAX3241 T_ OUT OUT 5kΩ * SHDN 7kΩ GND MAXIMUM SLEW-RATE TEST CIRCUIT C3 C4 150pF 7 ...

Page 8

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors PROTECTION DIODE UART Tx GND SHDN = GND a) OLDER RS-232: POWERED-DOWN UART DRAWS CURRENT FROM ACTIVE RECEIVER OUTPUT IN ...

Page 9

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors Table 1. MAX3222/MAX3237/MAX3241 Shutdown and Enable Control Truth Table T_OUT R_OUT 0 0 ...

Page 10

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors Figure 4a. MAX3241 Transmitter Output Voltage vs. Load Current per Transmitter Figure 4b. Mouse Driver Test Circuit 10 ______________________________________________________________________________________ 6 5 ...

Page 11

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors V CC 0.1µ C1+ C1 C1- C2+ MAX3222 MAX3232 C2 C2- MAX3237 MAX3241 OUT R_ OUT * EN 5kΩ 0V ...

Page 12

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors Interconnection with 3V and 5V Logic The MAX3222/MAX3232/MAX3237/MAX3241 can directly interface with various 5V logic families, includ- ing ACT and HCT CMOS. See Table 3 ...

Page 13

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors _____________________________________Typical Operating Circuits (continued) 0.1µ C1+ 0.1µF 25 C1- 1 MAX3237 C2+ 0.1µF 3 C2- T1IN 24 T1 T2IN 23 T2 ...

Page 14

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors _____________________________________________Pin Configurations (continued C1 C1- 4 MAX3222 C2 T2OUT 8 R2IN 9 R2OUT 10 ...

Page 15

... MAX3232CWE+ 0°C to +70°C 16 Wide SO MAX3232CPE+ 0°C to +70°C 16 Plastic DIP MAX3232EUE+ -40°C to +85°C 16 TSSOP MAX3232ESE+ -40°C to +85°C 16 Narrow SO ______3V-Powered EIA/TIA-232 and EIA/TIA-562 Transceivers from Maxim POWER- SUPPLY PART TRANSMITTERS/ VOLTAGE RECEIVERS (V) MAX212 3.0 to 3.6 MAX218 1.8 to 4.25 MAX562 2 ...

Page 16

Low-Power 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors ___________________Chip Topography MAX3222 SHDN V+ C1 C1- C2+ 0.127" (3.225mm) C2- V- T2IN T2OUT R2IN R2OUT 0.087" (2.209mm) TRANSISTOR COUNT: 339 SUBSTRATE CONNECTED ...

Page 17

... Revision History Pages changed at Rev 7: 1, 15, 16, 17 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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