MAX4506:Fault-Protected, High-Voltage Signal-Line Protectors

The MAX4506/MAX4507 multiple, two-terminal signal-line protectors are pin-compatible with the industry-standard MAX366/MAX367. These new circuit protectors feature fault-protected inputs and rail-to-rail signal handling capability. The input pins are protected from overvoltage faults up to ±36V with power on or ±40V with power off. During a fault condition, the input terminal becomes an open circuit and only nanoamperes of leakage current flow from the source; but the switch output (OUT_) furnishes typically 19mA from the appropriate polarity supply to the load. This ensures unambiguous rail-to-rail outputs when a fault begins and ends. The MAX4506 contains three independent protectors while the MAX4507 contains eight independent protectors. They can protect both unipolar and bipolar analog signals using either unipolar (+9V to +36V) or bipolar (±8V to ±18V) power supplies. These devices have no logic control inputs; the protectors are designed to be always-on when the supplies are on. On-resistance is 100Ω max and matched within 7Ω , and on-leakage is less than 0.5nA at TA = +25°C. The MAX4506 is available in 8-pin SO/DIP packages. The MAX4507 is available in 20-pin SSOP and 18-pin SO/DIP packages.

Key Features
  • Overvoltage Protection
    • ±40V with Power Off
    • ±36V with Power On
  • Open Signal Paths with Power Off
  • Output Clamps to Either Rail with an Input Overvoltage
  • Any On Channel Output is Not Affected by an Overvoltage to Any Other Channel
  • 100Ω max On-Resistance
  • 10ns Overvoltage Turn-On Delay
  • No Latchup During Power Sequencing
  • Rail-to-Rail Signal Handling
  • 500Ω Output Clamp Resistance During Overvoltage
MAX4506, MAX4507: Typical Operating Circuit
MAX4506, MAX4507: Typical Operating Circuit
Applications/Uses
  • Automated Test Equipment (ATE)
  • Data Acquisition Systems
  • Hot-Insertion Boards/Systems
  • Process Control Systems
  • Redundant/Backup Systems
  • Sensitive Instruments
DataSheet
titleDownload file
MAX4506-MAX4507 Data SheetMAX4506-MAX4507.pdf
Parametrics
Part NumberFunctionsSignal Path Leakage
(±nA)
ΔRONVSUPPLY
(V)
VSUPPLY (Dual)
(±V)
RON
(Ω)
Fault Protect.
(±V)
Package/PinsBudgetary
Price
maxDualmaxSee Notes
MAX45063-Line20109.0 to 36.08 to 1810040CDIP(N)/8
PDIP(N)/8
SOIC(N)/8
$2.52 @1k
MAX45078-LinePDIP(N)/18
SOIC(W)/18
SSOP/20
$4.21 @1k
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4506C/DNo Longer AvailableDICE SALES,;NA pin;DICE;0°C to +70°CSee data sheet
MAX4506CPANo Longer AvailablePDIP(N),;8 pin;79.7 mm²0°C to +70°CNo
MAX4506CSANo Longer AvailableMAX4506CSA+SOIC(N),;8 pin;30.9 mm²0°C to +70°CNo
MAX4506CSA+ActiveSOIC(N),;8 pin;30.9 mm²0°C to +70°CLead Free
MAX4506CSA+TActiveSOIC(N),;8 pin;30.9 mm²0°C to +70°CLead Free
MAX4506CSA-TNo Longer AvailableMAX4506CSA+TN.SO;8 pin0°C to +70°CSee data sheet
MAX4506EPANo Longer AvailablePDIP(N),;8 pin;79.7 mm²-40°C to +85°CNo
MAX4506ESANo Longer AvailableMAX4506ESA+SOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX4506ESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX4506ESA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4506ESA-TNo Longer AvailableMAX4506ESA+TN.SO;8 pin-40°C to +85°CSee data sheet
MAX4506MJAActiveCDIP(N),;8 pin;82.6 mm²-40°C to +85°CNo
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