Fault-Protected, Low-Voltage, Quad SPST Analog Switches

Quad, Rail-to-Rail, Fault-Protected, Low-Voltage SPST Analog Switches

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The MAX4711/MAX4712/MAX4713 are fault-protected, Rail-to-Rail, low-voltage analog switches featuring low on-resistance and guaranteed on-resistance flatness over the specified signal range. Due to the fault protection feature the analog switch input (NO_ or NC_) and output (COM_) pins are not symmetrical. The fault protection feature allows for the analog input to go beyond the plus or minus supplies without the device drawing excessive amounts of current from the analog inputs. When the analog inputs are driven beyond the supply rails when the switch is on, it will sense a fault and turn itself off and the analog switch output will be clamped to the same polarity supply as the input signal and will not go beyond the supply rails. This feature protects any electronic circuitry connected to the output from excessive voltages present on the analog inputs.

The MAX4711/MAX4712/MAX4713 are quad, singlepole/single-throw (SPST) analog switches. The MAX4711 has four normally closed switches (NC), the MAX4712 has four normally open switches (NO), and the MAX4713 has two NO and two NC switches. Switching times are less than 125ns for tON, and less than 80ns for tOFF. These switches operate from a single +2.7V to +11V supply or from dual ±2.7V to ±5.5V supplies. All digital inputs have +0.8V to +2.4V logic thresholds, ensuring both TTL and CMOS logic compatibility when using ±4.5V to ±5.5V or single +4.5V to +11V supplies.
MAX4711, MAX4712, MAX4713: Block Diagram MAX4711, MAX4712, MAX4713: Block Diagram Enlarge+

Key Features

  • Fault-Protected Analog Inputs
  • ±12V Fault Protection with Power Off
  • ±7V Fault Protection with ±5V Supplies
  • +12V and -7V Fault Protection with +5V Supply
  • +12V and -9V Fault Protection with +3V Supply
  • Fault-Protected Digital Inputs May Exceed V+ Supply Rail
  • All Switches Off with Power Off
  • Rail-to-Rail Signal Handling
  • Output Clamped to Appropriate Supply Voltages During Fault Condition
  • 25Ω (max) RON at +25°C
  • 1Ω (max) On-Resistance Match Between Channels
  • Single- and Dual-Supply Operation
  • Pin-Compatible with Industry-Standard MAX391/MAX392/MAX393
  • TTL- and CMOS-Compatible Logic Inputs


  • Avionics
  • Battery-Operated Systems
  • Communication Systems
  • Data Acquisition
  • Industrial and Process Control Systems
  • Redundant/Backup Systems
  • Signal Routing
  • Test Equipment

See parametric specs for Switches and Multiplexers (Mid and High Voltage) (299)

Part NumberFunctionsConfig.ChannelsNormal PositionVSUPPLY (Single)
VSUPPLY (Single)
minmaxminmaxmaxmaxmaxmaxSee Notes
MAX4711 SwitchSPST4Closed2.7112.75.5250.51258025308
SOIC (N)/16
$4.19 @1k
MAX4712 Open26
SOIC (N)/16
$4.28 @1k
MAX4713 Open/Closed27
SOIC (N)/16
$3.28 @1k

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

App Note 2854 Low-Voltage Fault Protection
Request Reliability Report for: MAX4712 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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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Related Resources

Type ID Title
App Note 2854 Low-Voltage Fault Protection