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Maxim > Products > [Analog Switches and Multiplexers]  [Protection and Isolation] 
MAX366, MAX367
Signal Line Circuit Protector with Three Independent Protectors


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Data Sheet
FULL DATA SHEET (PDF, 112kB)
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Description
The MAX366 and MAX367 are multiple, two-terminal circuit protectors. Placed in series with signal lines, each two-terminal device guards sensitive circuit components against voltages near and beyond the normal supply voltages. These devices are used at interfaces where sensitive circuits are connected to the external world and could encounter damaging voltages (up to 35V beyond the supply rails) during power-up, power-down, or fault conditions.

The MAX366 contains three independent protectors and the MAX367 contains eight. They can protect analog signals using either unipolar (4.5V to 36V) or bipolar (±2.25V to ±18V) power supplies. Each protector is symmetrical. Input and output terminals may be freely interchanged.

These devices are voltage-sensitive MOSFET transistor arrays that are normally on when power is applied and normally open circuit when power is off. With ±10V supplies, on-resistance is 100Ω max and leakage is less than 1nA at +25°C.

When signal voltages exceed or are within approximately 1.5V of either power-supply voltage (including when power is off), the two-terminal resistance increases dramatically, limiting fault current as well as output voltage to sensitive circuits. The protected side of the switch maintains the correct polarity and clamps approximately 1.5V below the supply rail. There are no "glitches" or polarity reversals going into or coming out of a fault condition.

Key Features   Applications/Uses
  • ±40V Overvoltage Protection
  • Open Signal Paths with Power Off
  • 100Ω Signal Paths with Power On
  • 1nA Max Path Leakage at +25°C
  • 44V Maximum Supply Voltage Rating
  • Automatic Protection; No Programming or Controls

 
  		• Automated Test Equipment (ATE)
  		• Data Acquisition
  		• Hot-Insertion Boards/Systems
  		• Process Control Systems
  		• Redundant/Backup Systems
  		• Sensitive Instruments

    Key Specifications:   Signal-Line Protectors
    Part Number Functions Max. Signal Path Leakage (±nA) RON Mis-Match (max) (Ω) Analog Signal Voltage Range (V) Features Supply Voltage (V) Dual Supply Voltage (±V) RON (max) (Ω) Fault Protection (±V) RoHS Available Package Smallest Available Package (max w/pins) (mm2) Price**
    MAX366 
    •3-Line
    		 1 7 -12.5 to +13.5
    •Automatic Protection
    		 4.5 to 36.0 2.25 to 18.0 100 40 Yes CDIP(N)/8
    PDIP(N)/8
    SOIC(N)/8     		31 $1.42 @ 1k
    MAX367 
    •8-Line
    		 CDIP(N)/18
    PDIP(N)/18
    SOIC(W)/18     		125 $2.43 @ 1k
    See All Signal-Line Protectors (5)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX366, MAX367: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 761: Automatic Test Equipment on a Budget - MAX367
  		• Application Note 1132: Fault Protection Saves Multiplexers, Switches, and Downstream Circuitry - MAX366

    Evaluation Kits
    none

    Design Guides
  		• Mux & Switch (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-28 of 28

    MAX366 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX366MJA  
    		CDIP(N);8 pin;83 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J8-2*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX366C/D  


    Land Pattern: Not Available

    		See data sheet
    MAX366EPA+  
    		PDIP(N);8 pin;82 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+3*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX366CPA  
    		PDIP(N);8 pin;82 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-3*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX366CPA+  
    		PDIP(N);8 pin;82 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8+3*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX366EPA  
    		PDIP(N);8 pin;82 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P8-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX366CSA  
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX366CSA-T  


    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX366CSA+  
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX366CSA+T  
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX366ESA  
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX366ESA-T  
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-5*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX366ESA+  
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX366ESA+T  
    		SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+5*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX367 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX367MJN  
    		CDIP(N);18 pin;198 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J18-2*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX367C/D  


    Land Pattern: Not Available

    		See data sheet
    MAX367CPN  
    		PDIP(N);18 pin;192 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P18-6*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX367CPN+  
    		PDIP(N);18 pin;192 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P18+6*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX367EPN  
    		PDIP(N);18 pin;192 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P18-6*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX367EPN+  
    		PDIP(N);18 pin;192 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P18+6*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX367EWN+  
    		SOIC(W);18 pin;125 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0181 (PDF)
    Use pkgcode/variation: W18+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX367EWN+T  
    		SOIC(W);18 pin;125 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0181 (PDF)
    Use pkgcode/variation: W18+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX367CWN  
    		SOIC(W);18 pin;125 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0181 (PDF)
    Use pkgcode/variation: W18-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX367CWN-T  
    		SOIC(W);18 pin;125 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0181 (PDF)
    Use pkgcode/variation: W18-2*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX367CWN+  
    		SOIC(W);18 pin;125 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0181 (PDF)
    Use pkgcode/variation: W18+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX367CWN+T  
    		SOIC(W);18 pin;125 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0181 (PDF)
    Use pkgcode/variation: W18+2*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX367EWN  
    		SOIC(W);18 pin;125 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0181 (PDF)
    Use pkgcode/variation: W18-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX367EWN-T  
    		SOIC(W);18 pin;125 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0181 (PDF)
    Use pkgcode/variation: W18-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    Notes and Comments
  		• Automatic protection; no programming or controls

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    Document Ref.: 19-0326; Rev 0; 1994-12-01
    This page last modified: 2007-05-30


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