MAX3227

1µA Supply Current, 1Mbps, 3.0V to 5.5V, RS-232 Transceivers with AutoShutdown Plus


Please check latest availability status for a specific part variant.

Description

The MAX3224–MAX3227/MAX3244/MAX3245 are 3V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/wakeup features and high data-rate capabilities.

All devices achieve a 1µA supply current using Maxim's revolutionary AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected or the transmitters of the connected peripherals are inactive, and the UART driving the transmitter inputs is inactive for more than 30 seconds. They turn on again when they sense a valid transition at any transmitter or receiver input. AutoShutdown Plus saves power without changes to the existing BIOS or operating system.

The MAX3225/MAX3227/MAX3245 also feature MegaBaud™ operation, guaranteeing 1Mbps for highspeed applications such as communicating with ISDN modems. The MAX3224/MAX3226/MAX3244 guarantee 250kbps operation. The 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 charge pump requires only four small 0.1µF capacitors for operation from a 3.3V supply. The MAX3224-MAX3227 feature a logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.

All devices are available in a space-saving TSSOP and SSOP packages.
MAX3224, MAX3225, MAX3226, MAX3227, MAX3244, MAX3245: Typical Operating Circuits MAX3224, MAX3225, MAX3226, MAX3227, MAX3244, MAX3245: Typical Operating Circuits Enlarge+

Key Features

  • For Smaller Packaging:
    • MAX3228/MAX3229: +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, 2 Tx/2 Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins
  • 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 (MAX3246E Available in UCSP)

Applications/Uses

  • Battery-Powered Equipment
  • Cell Phones
  • Handheld Equipment
  • 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
MAX3224 
3.3
5
222500.3Yes40.12
PDIP/20
SSOP/20
TQFN/20
TSSOP/20
$2.56 @1k
MAX3225 2210002
PDIP/20
SSOP/20
TQFN/20
TSSOP/20
$2.56 @1k
MAX3226 112502
SSOP/16
$1.76 @1k
MAX3227 1110002
SSOP/16
$1.67 @1k
MAX3244 352505
SOIC (W)/28
SSOP/28
$1.83 @1k
MAX3245 3510005
SOIC (W)/28
SSOP/28
$1.83 @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.

Technical Documents

Tutorial 2141 Determining Clock Accuracy Requirements for UART Communications

Quality and Environmental Data

Request Reliability Report for: MAX3227 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX3227CAE+
  • MAX3227CAE+T
  • MAX3227EAE+
  • MAX3227EAE+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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    05/29/2020 - 05/31/2020, Detroit, MI
    2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

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