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

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The MAX312F/MAX313F/MAX314F are quad, single-pole/single-throw (SPST), fault-protected analog switches. They are pin compatible with the industry-standard nonprotected MAX312/MAX313/MAX314. These switches feature fault-protected inputs and rail-to-rail signal-handling capability. All analog signal terminals are protected from overvoltage faults up to ±36V with power on and up to ±40V with power off. During a fault condition, the COM_, NO_, or NC_ terminal becomes an open circuit and only microamperes of leakage current flow from the source. On-resistance is 10Ω (max) and is matched between switches to 0.5Ω (max) at +25°C.

The MAX312F has four normally closed (NC) switches. The MAX313F has four normally open (NO) switches. The MAX314F has two NC and two NO switches. These CMOS switches operate with dual power supplies ranging from ±4.5V to ±20V or a single supply between +9V and +36V. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring both TTL and CMOS logic compatibility when using ±15V or a single +12V supply.

For supply voltages of ±5V, +5V, and +3V, refer to the MAX4711/MAX4712/MAX4713 data sheet.
MAX312F, MAX313F, MAX314F: Functional Diagram MAX312F, MAX313F, MAX314F: Functional Diagram Enlarge+

Key Features

  • No Power-Supply Sequencing Required
  • Rail-to-Rail Signal Handling
  • All Switches Off with Power Off
  • All Switches Off when V+ is Off and V- is On
  • ±40V Fault Protection with Power Off
  • ±36V Fault Protection with ±15V Supplies
  • Control Line Fault Protection from V- - 0.3V to V- + 40V
  • Pin Compatible with Industry-Standard DG411/DG412/DG413
  • 600ns (typ) Fault Response Time
  • 10Ω (max) RON with ±15V Supplies
  • ±4.5V to ±20V Dual Supplies
  • +9V to +36V Single Supply
  • TTL- and CMOS-Compatible Logic Inputs with ±15V or Single +9V to +15V Supplies


  • Automated Test Equipment (ATE)
  • Avionics
  • Communication Systems
  • Data Acquisition
  • Hot Swap
  • 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 NumberFunctionsConfigurationChannelsNormal PositionVSUPPLY (Single)
VSUPPLY (Single)
minmaxminmaxmaxmaxmaxmaxSee Notes
MAX312F SwitchSPST4Closed9364.520101225185704320
SOIC (N)/16
$6.09 @1k
MAX313F Open
SOIC (N)/16
$5.96 @1k
MAX314F Open/Closed
SOIC (N)/16
$5.40 @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.
Request Reliability Report for: MAX312F 
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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