MAX4509:Fault-Protected, High-Voltage Single 8-to-1/Dual 4-to-1 Multiplexers with Output Clamps

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.

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
MAX4508, MAX4509: Functional Diagram
MAX4508, MAX4509: Functional Diagram
Applications/Uses
  • Avionics
  • Data Acquisition Systems
  • Industrial and Process Control
  • Redundant/Backup Systems
  • Signal Routing
DataSheet
titleDownload file
MAX4508-MAX4509 Data SheetMAX4508-MAX4509.pdf
Parametrics
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
minmaxminmaxmaxmaxminmaxSee Notes
MAX4508Mux8-to-119364.5204002275200102810CDIP(N)/16
PDIP(N)/16
SOIC(N)/16
$4.55 @1k
MAX45094-to-12122CDIP(N)/16
PDIP(N)/16
SOIC(N)/16
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4509C/DNo Longer AvailableDICE SALES,;NA pin;DICE;0°C to +70°CSee data sheet
MAX4509CPELast Time BuyPDIP(N),;16 pin;158.4 mm²0°C to +70°CNo
MAX4509CPE+ActivePDIP(N),;16 pin;158.4 mm²0°C to +70°CLead Free
MAX4509CSENo Longer AvailableMAX4509CSE+SOIC(N),;16 pin;62 mm²0°C to +70°CNo
MAX4509CSE+ActiveSOIC(N),;16 pin;62 mm²0°C to +70°CLead Free
MAX4509CSE+TActiveSOIC(N),;16 pin;62 mm²0°C to +70°CLead Free
MAX4509CSE-TNo Longer AvailableMAX4509CSE+TN.SO;16 pin0°C to +70°CSee data sheet
MAX4509EPENo Longer AvailablePDIP(N),;16 pin;158.4 mm²-40°C to +85°CNo
MAX4509ESENo Longer AvailableMAX4509ESE+SOIC(N),;16 pin;62 mm²-40°C to +85°CNo
MAX4509ESE+ActiveSOIC(N),;16 pin;62 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4509ESE+TActiveSOIC(N),;16 pin;62 mm²-40°C to +85°CLead Free
MAX4509ESE-TNo Longer AvailableMAX4509ESE+TN.SO;16 pin-40°C to +85°CSee data sheet
MAX4509MJENo Longer AvailableCDIP(N),;16 pin;173.5 mm²-40°C to +85°CNo
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