MAX3232CSE-G05

Manufacturer Part NumberMAX3232CSE-G05
DescriptionRS-232 Interface IC
ManufacturerMaxim Integrated
SeriesMAX3222, MAX3232, MAX3237, MAX3241
MAX3232CSE-G05 datasheet
 

Specifications of MAX3232CSE-G05

Data Rate235 KbpsOperating Supply Voltage3 V to 5 V
Supply Current1 mAOperating Temperature Range0 C to + 70 C
Mounting StyleSMD/SMTFunctionTransceiver
Maximum Operating Temperature+ 70 CMinimum Operating Temperature0 C
Number Of Drivers2Number Of I/os8
Number Of Receivers2Propagation Delay Time Ns0.3 us
ShutdownNo  
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3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232
Transceivers Using Four 0.1µF External Capacitors
________________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-
Functional Diagrams
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
Notebook, Subnotebook, and Palmtop Computers
High-Speed Modems
Battery-Powered Equipment
Hand-Held Equipment
Peripherals
Printers
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
Typical Operating Circuits appear at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
MegaBaud and UCSP are trademarks of Maxim Integrated Products, Inc.
*
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
MAX3222/MAX3232/
MAX3237/MAX3241
__Next Generation Device Features
♦ For Smaller Packaging:
MAX3228E/MAX3229E: +2.5V to +5.5V RS-232
Transceivers in UCSP™
♦ For Integrated ESD Protection:
MAX3222E/MAX3232E/MAX3237E/MAX3241E/
MAX3246E: ±15kV ESD-Protected, Down to 10nA,
3.0V to 5.5V, Up to 1Mbps, True RS-232
Transceivers
♦ For Low-Voltage or Data Cable Applications:
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.
CC
_________________Pin Configurations
TOP VIEW
+
EN
1
C1+
2
V+
3
MAX3222
C1-
4
MAX3222
C2+
5
C2-
6
V-
7
T2OUT
8
R2IN
9
Pin Configurations continued at end of data sheet.
PKG
PIN-PACKAGE
CODE
20 TSSOP
U20+2
20 SSOP
A20+1
18 SO
W18+1
18 Plastic Dip
P18+5
SHDN
18
V
17
CC
16
GND
T1OUT
15
R1IN
14
13
R1OUT
T1IN
12
T2IN
11
10
R2OUT
DIP/SO
19-0273; Rev 7; 1/07

MAX3232CSE-G05 Summary of contents

  • Page 1

    ... Functional Diagrams continued at end of data sheet. Typical Operating Circuits appear at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. MegaBaud and UCSP are trademarks of Maxim Integrated Products, Inc. * For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. ...

  • Page 2

    ... Typical values are MIN MAX CONDITIONS MAX3222/MAX3232/ = 3.3V or 5.0V, CC MAX3241 = +25°C MAX3237 = +25° 3.3V = 5.0V = 1.6mA = -1.0mA +25° 5. 3. +25° +70° +25°C.) A MIN TYP MAX UNITS 0.3 1.0 mA 0.5 2.0 1.0 10 µA 0.8 V 2.0 V 2.4 ±0.01 ±1.0 µA ±0.05 ±10 µ 0.6 1.2 V 0.8 1.5 1.5 2.4 V 1.8 2.4 Maxim Integrated ...

  • Page 3

    ... Receiver Output Disable Time Normal operation | Transmitter Skew t PHL | Receiver Skew t PHL V CC +3V to -3V or -3V to +3V, Transition-Region Slew Rate T A switching Maxim Integrated = unless otherwise noted. Typical values are MIN MAX CONDITIONS = +25° 0V ±2V OUT = ±12V 5.5V, transmitters ...

  • Page 4

    ... A MAX3222/MAX3232 SUPPLY CURRENT vs. LOAD CAPACITANCE WHEN TRANSMITTING DATA 4000 5000 0 1000 2000 LOAD CAPACITANCE (pF) = +25°C.) A MAX UNITS kbps µ 150 V/µs 30 235kbps 120kbps 20kbps 3000 4000 5000 Maxim Integrated ...

  • Page 5

    ... TRANSMITTER AT FULL DATA RATE 4 TRANSMITTERS AT 1/16 DATA RATE 10 3kΩ LOAD EACH OUTPUT 3. 500 1000 1500 LOAD CAPACITANCE (pF) Maxim Integrated MAX3241 SLEW RATE vs. LOAD CAPACITANCE -SLEW +SLEW ALL OUTPUTS LOADED WITH 3kΩ +C 0.1µF CHARGE-PUMP CAPACITORS ...

  • Page 6

    ... RS-232 Transmitter Outputs RS-232 Receiver Inputs TTL/CMOS Receiver Outputs TTL/CMOS Transmitter Inputs Ground +3.0V to +5.5V Supply Voltage Shutdown Control. Active low. No Connection MegaBaud Control Input. Connect to GND for normal operation; connect to V for 1Mbps transmission rates. CC Noninverting Complementary Receiver Outputs. Always active. Maxim Integrated ...

  • Page 7

    ... GND * MAX3222/MAX3241 ONLY MINIMUM SLEW-RATE TEST CIRCUIT Figure 1. Slew-Rate Test Circuits Maxim Integrated The MAX3222/MAX3237/MAX3241’s output stage is turned off (high impedance) when the device is in shut- down mode. When the power is off, the MAX3222/ MAX3232/MAX3237/MAX3241 permit the outputs to be driven up to ±12V. ...

  • Page 8

    ... The capacitor’s equivalent series resistance (ESR), which usually rises at low tempera- tures, influences the amount of ripple on V+ and V-. RS-232 Receivers is set shutdown to CC MAX3222/MAX3237/MAX3241 Shutdown Mode if the shutdown mode is not used. SHDN CC MAX3222/MAX3237/MAX3241 Enable Control Capacitor Selection , Maxim Integrated ...

  • Page 9

    ... V = 3.3V CC C1–C4 = 0.1µF Figure 3. Transmitter Outputs when Exiting Shutdown or Powering Up Maxim Integrated In most circumstances, a 0.1µF bypass capacitor is adequate. In applications that are sensitive to power- supply noise, decouple V R_OUTB of the same value as charge-pump capacitor C1. Connect R_OUT (MAX3237/ MAX3241) bypass capacitors as close to the IC as possible. ...

  • Page 10

    ... T2IN 13 T3IN T3OUT R1OUTB 21 20 R2OUTB R1IN 4 19 R1OUT 5kΩ 18 R2IN 5 R2OUT 5kΩ 17 R3OUT R3IN 5kΩ 16 R4IN 7 R4OUT 5kΩ 15 R5IN 8 R5OUT 5kΩ SHDN 22 GND 25 + OUT - OUT COMPUTER SERIAL PORT GND Tx 6 MOUSE Maxim Integrated ...

  • Page 11

    ... The MAX3237 maintains the RS-232 ±5.0V minimum transmitter output voltage at data rates up to 1Mbps. Figure 8 shows a loopback test result at 1Mbps with MBAUD = V . For Figure 8, all transmitters were CC loaded with an RS-232 receiver in parallel with 250pF. Maxim Integrated T1IN T1OUT V+ C3 R1OUT OUT Figure 6 ...

  • Page 12

    ... Incompatible with AC, HC, and CD4000 CMOS. +3. C1 C1- 4 MAX3232 C2 C2- 11 T1OUT 14 T1IN T2IN T2OUT 7 10 R1IN 13 12 R1OUT 5kΩ 9 R2OUT R2IN 8 5kΩ GND CAN BE RETURNED TO EITHER V OR GROUND 0.1µ 0.1µF RS-232 OUTPUTS RS-232 INPUTS Maxim Integrated ...

  • Page 13

    ... T4IN 19 T4 T5IN 17 T5 R1OUTB 16 R1OUT 21 R1 R2OUT 20 LOGIC R2 OUTPUTS R3OUT GND CAN BE RETURNED TO EITHER V Maxim Integrated +3.3V 0.1µ 0.1µ 0.1µF 0.1µF T1OUT 5 T2OUT 6 TTL/CMOS INPUTS T3OUT 7 RS-232 OUTPUTS T4OUT 10 T5OUT 12 R1IN 8 TTL/CMOS 5kΩ OUTPUTS RS-232 R2IN 9 INPUTS 5kΩ ...

  • Page 14

    ... DIP/SO/TSSOP + 28 1 C2 R1IN 4 GND C1- R2IN 5 24 MAX3241 R3IN R4IN 7 SHDN 21 R1OUTB R5IN R2OUTB T1OUT 19 T2OUT 10 R1OUT T3OUT 11 18 R2OUT 12 17 R3OUT T3IN T2IN 13 16 R4OUT T1IN 15 14 R5OUT SO/SSOP/TSSOP Maxim Integrated ...

  • Page 15

    ... MAX3222EAP+ -40°C to +85°C MAX3222EWN+ -40°C to +85°C MAX3222EPN+ -40°C to +85°C MAX3222C/D 0°C to +70°C MAX3232CUE+ 0°C to +70°C MAX3232CSE+ 0°C to +70°C MAX3232CWE+ 0°C to +70°C MAX3232CPE+ 0°C to +70°C MAX3232EUE+ -40°C to +85°C MAX3232ESE+ -40°C to +85°C ...

  • Page 16

    ... Topography MAX3222 V+ C1+ EN C1- C2+ 0.127" (3.225mm) C2- V- T2OUT R2IN R2OUT 0.087" (2.209mm) TRANSISTOR COUNT: 339 SUBSTRATE CONNECTED TO GND 16 ___________________Chip Information SHDN V CC GND T1OUT R1IN R1OUT T2IN T1IN PART TRANSISTOR COUNT MAX3222 339 MAX3232 339 MAX3237 1212 MAX3241 894 Maxim Integrated ...

  • Page 17

    ... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 © 2007 Maxim Integrated The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. Package Information PACKAGE OUTLINE, TSSOP 4.40mm BODY 1 ...