±15kV ESD-Protected, 460kbps, 1µA, RS-232-Compatible Transceivers in µMAX

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The MAX3311E/MAX3313E are low-power, 5V EIA/TIA-232-compatible transceivers. All transmitter outputs and receiver inputs are protected to ±15kV using the Human Body Model, making these devices ideal for applications where more robust transceivers are required.

Both devices have one transmitter and one receiver. The transmitters have a proprietary low-dropout transmitter output stage enabling RS-232-compatible operation from a +5V supply with a single inverting charge pump. These transceivers require only three 0.1µF capacitors and will run at data rates up to 460kbps while maintaining RS-232-compatible output levels.

The MAX3311E features a 1µA shutdown mode. In shutdown the device turns off the charge pump, pulls V- to ground, and the transmitter output is disabled. The MAX3313E features an active-low INVALID output that asserts high when an active RS-232 cable signal is connected, signaling to the host that a peripheral is connected to the communication port.
MAX3311E, MAX3313E: Typical Operating Circuit MAX3311E, MAX3313E: Typical Operating Circuit Enlarge+

Key Features

  • ESD Protection for RS-232-Compatible I/O Pins ±15kV—Human Body Model
  • 1µA Low-Power Shutdown (MAX3311E)
  • Active-low INVALID Output (MAX3313E)
  • Receiver Active in Shutdown (MAX3311E)
  • Single Transceiver (1Tx/1Rx) in 10-Pin µMAX Package


  • Digital Still Cameras
  • Global Positioning Systems (GPS)
  • Handy Terminals
  • PDAs
  • POS
  • Set-Top Boxes
  • Telecommunications
Part NumberVSUPPLY
TxRxData Rate
Internal Charge PumpExt. CapsCap. Value
ESD Protect.
Rx Active in ShutdnPackage/PinsBudgetary
mintypnomSee Notes
MAX3311E 5114600.1Yes20.1151
$1.67 @1k
MAX3313E 0
$1.71 @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.

CAD Symbols and Footprints

  • MAX3313ECUB+
  • MAX3313ECUB+T
  • MAX3313EEUB+
  • MAX3313EEUB+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.

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