±15kV ESD-Protected, 460kbps, 1µA, RS-232-Compatible Transceiver

Save Board Space with the ±5V, 1-Tx/1-Rx Transceiver

Please check latest availability status for a specific part variant.


The MAX3314E is a ±5V-powered EIA/TIA-232-compatible interface. It has one transmitter and one receiver in a flow-through architecture. The transmitter output and the receiver input are protected to±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.

The transmitter has a low-dropout output stage providing minimum RS-232-compatible ±3.7V output levels while driving 3 kilohms and 1000pF at 460kbps. Both +5V and -5V must be supplied externally.

The MAX3314E has a active-low SHDN function that reduces supply current to 1µA. The transmitter is disabled and put into tristate while the receiver remains active.

The MAX3314E is available in 8-pin µMAX®, SOT23 and SO packages.
MAX3314E: Typical Operating Circuit MAX3314E: Typical Operating Circuit Enlarge+

Key Features

  • ESD Protection for RS-232 I/O Pins
    • ±15kV—Human Body Model
    • ±8kV—IEC 1000-4-2 Contact Discharge
    • ±15kV—IEC 1000-4-2 Air-Gap Discharge
  • 1µA Low-Power Shutdown with Receiver Active
  • 30µA Operating Supply Current
  • 460kbps Guaranteed Data Rate
  • 8-Pin SOT23 Package
  • ±3.7V RS-232-Compatible Levels


  • Digital Still Cameras
  • Global Positioning Systems (GPS)
  • Handy Terminals
  • PDAs
  • POS
  • Set-Top Boxes
  • Telecommunications
Part NumberVSUPPLY (Dual)
TxRxData Rate
Internal Charge PumpESD Protect.
Rx Active in ShutdnPackage/PinsBudgetary
DualmintypSee Notes
MAX3314E 5114600.3No151
SOIC (N)/8
$1.36 @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 739 Design Considerations for Data-Lump Cables

Quality and Environmental Data

Request Reliability Report for: MAX3314E 
Lead-Free Package Tin (Sn) Whisker Reports
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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