MAX3237

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


Please check latest availability status for a specific part variant.

Description

The MAX3222/MAX3232/MAX3237/MAX3241 transceivers have a proprietary low-dropout transmitter output 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 normal operating mode and 1Mbps in the MegaBaud™ operating mode.

The MAX3222/MAX3232 have 2 receivers and 2 drivers. The MAX3222 and MAX3232 are pin, package, and functionally compatible with the industry-standard MAX242 and MAX232, respectively.

The MAX3241 has 5 receivers and 3 drivers, while the MAX3237 has 3 receivers and 5 drivers. Receivers R1 (MAX3237/MAX3241) and R2 (MAX3241) have extra outputs in addition to their standard outputs. These extra outputs are always active, allowing external devices to be monitored without forward biasing the protection diodes in circuitry that may have VCC completely removed.

The MAX3222, MAX3232, and MAX3241 are available in space-saving TSSOP and SSOP packages with operating temperatures of either -40°C to +85°C or 0°C to 70°C.

MAX3222, MAX3232, MAX3237, MAX3241: Typical Operating Circuits MAX3222, MAX3232, MAX3237, MAX3241: Typical Operating Circuits Enlarge+

Key Features

  • Integrated Features Saves Board Space and Simplifies Design
    • Charge Pump Circuitry Eliminates the Need for a Bipolar ±12V Supply
    • Wide Single-Supply Operation From +3V to +5.5V Supply
    • Always-On Extra Outputs Enable Monitoring of External Devices
  • Power Saving Extends Battery Life
    • 1µA Supply Current in Shutdown Mode While Receiver is Active (MAX3222, MAX3237, MAX3241)

Applications/Uses

  • Battery-Powered Equipment
  • Handheld Equipment
  • High-Speed Modems
  • Notebook, Subnotebook, and Palmtop Computers
  • Peripherals
  • Printers
Part NumberVSUPPLY
(V)
TxRxData Rate
(kbps)
ICC
(mA)
Internal Charge PumpExt. CapsCap. Value
(µF)
Rx Active in ShutdnPackage/PinsBudgetary
Price
mintypnomSee Notes
MAX3222 
3.3
5
221200.3Yes40.12
PDIP/18
SOIC (W)/18
SSOP/20
TSSOP/20
$2.39 @1k
MAX3232 221200.3-
PDIP/16
SOIC (N)/16
SOIC (W)/16
SSOP/16
TSSOP/16
$2.56 @1k
MAX3237 5310000.53
SSOP/28
$2.23 @1k
MAX3241 351200.35
SOIC (W)/28
SSOP/28
TSSOP/28
$2.23 @1k
See All RS-232 Line Driver/Receivers (136)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAXPMBAE: Maxim Analog Essentials Collection of Peripheral Modules

Technical Documents

Tutorial 2141 Determining Clock Accuracy Requirements for UART Communications

Quality and Environmental Data

Request Reliability Report for: MAX3237 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

RS232 Resources

CAD Symbols and Footprints

  • MAX3237CAI
  • MAX3237CAI+
  • MAX3237CAI+T
  • MAX3237CAI-T
  • MAX3237EAI
  • MAX3237EAI+
  • MAX3237EAI+T
  • MAX3237EAI-T
  • MAX3237ECAI
  • MAX3237ECAI+
  • MAX3237ECAI+T
  • MAX3237ECAI-T
  • MAX3237EEAI
  • MAX3237EEAI+
  • MAX3237EEAI+T
  • MAX3237EEAI-T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
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    Temperature:

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