MAX4509

Fault-Protected, High-Voltage Single 8-to-1/Dual 4-to-1 Multiplexers with Output Clamps


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Description

The MAX4508/MAX4509 are 8-to-1 and dual 4-to-1 fault-protected multiplexers that are pin compatible with the industry-standard DG508/DG509. The MAX4508/MAX4509 operate with dual supplies of ±4.5V to ±20V or a single supply of +9V to +36V. These multiplexers feature fault-protected inputs, rail-to-rail signal handling capability, and overvoltage clamping at 150mV beyond the rails.

Both parts offer ±40V overvoltage protection with supplies off and ±25V protection with supplies on. On-resistance is 400Ω max and is matched between channels to 15Ω max. All digital inputs have TTL logic thresholds, ensuring both TTL and CMOS logic compatibility when using a single +12V supply or dual ±15V supplies.
MAX4508, MAX4509: Functional Diagram MAX4508, MAX4509: Functional Diagram Enlarge+

Key Features

  • ±40V Fault Protection with Power Off
    ±25V Fault Protection with ±15V Supplies
  • Rail-to-Rail Signal Handling
  • No Power-Supply Sequencing Required
  • All Channels Off with Power Off
  • Output Clamped to Appropriate Supply Voltage During Fault Condition
  • 1kΩ Output Clamp Resistance During Overvoltage
  • 400Ω max On-Resistance
  • 20ns Fault-Response Time
  • ±4.5V to ±20V Dual Supplies
    +9V to +36V Single Supply
  • TTL/CMOS-Compatible Logic Inputs

Applications/Uses

  • Avionics
  • Data Acquisition Systems
  • Industrial and Process Control
  • Redundant/Backup Systems
  • Signal Routing

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


Part NumberFunctionsConfig.ChannelsVSUPPLY (Single)
(V)
VSUPPLY (Single)
(V)
VSUPPLY (Dual)
(±V)
VSUPPLY (Dual)
(±V)
RON
(Ω)
IL(OFF)
(nA)
tON
(ns)
tOFF
(ns)
QINJECTION
(pC)
CON
(pF)
COFF
(pF)
Package/PinsBudgetary
Price
minmaxminmaxmaxmaxmaxmaxSee Notes
MAX4508 Mux8-to-119364.5204002275200102810
CDIP/16
PDIP/16
SOIC (N)/16
$4.99 @1k
MAX4509 4-to-12122
PDIP/16
SOIC (N)/16
$4.78 @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.
Product Reliability Reports: MAX4509.pdf 
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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