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Maxim > Products > [Analog Switches and Multiplexers] 
MAX4645, MAX4646
Fast, Low-Voltage, 2.5 Ohm, SPST, CMOS Analog Switches


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 352kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX4645/MAX4646 single-pole, single-throw (SPST) analog switches feature a 2.5Ω typical on-resistance (RON) from a +5V supply. RON is flat (0.4Ω max) over the specified signal range. Each switch can handle rail-to-rail analog signals. Off-leakage current is 0.25nA max at +25°C. These analog switches are ideal in low-distortion applications and are the preferred solution over mechanical relays in automated test equipment or applications where current switching is required. They have low power requirements, require less board space, and are more reliable than mechanical relays.

These switches operate from a +1.8V to +5V single supply, making them ideal for use in battery-powered applications. The MAX4645/MAX4646 have fast switching speeds of 12ns turn-on time (tON) and 8ns turn-off time (tOFF).

The MAX4645 is a normally open (NO) switch, and the MAX4646 is a normally closed (NC) switch. Both are available in 5-pin SOT23, 6-pin SOT23, and 8-pin µMAX® packages.

Key Features   Applications/Uses
  • +1.8V to +5V Single-Supply Operation
  • Guaranteed RON
    • 2.5Ω max (5V supply)
    • 3.5Ω max (3V supply)
  • 1.8V Operation
    • RON 30Ω typ Over Temperature
    • tON 40ns typ, tOFF 20ns typ
  • Low RON Flatness: 0.4Ω max
  • Guaranteed Low Leakage Currents
    • ±0.25nA at +25°C
  • Rail-to-Rail Output Capability
  • TTL/CMOS-Logic Compatible
  • -75dB Off-Isolation at 1MHz
  • Low Distortion: 0.014% typ
 
  • Audio/Video Signal Routing
  • Battery-Powered Systems
  • Communications Circuits
  • Low-Voltage Data-Acquisition Systems
  • Relay Replacement
  • Sample-and-Hold Circuits

Key Specifications:  Switches and Multiplexers (Low Voltage)
Part Number Functions Config. Channels Normal Position VSUPPLY (Single)
(V)		 VSUPPLY (Single)
(V)		 RON
(Ω)		 IL(OFF)
(nA)		 tON
(ns)		 tOFF
(ns)		 QINJECTION
(pC)		 CON
(pF)		 COFF
(pF)		 Price
min max max max min max max max See Notes
MAX4645  Switch SPST 1 Open 1.8 5.5 2.5 0.25 15 10 5 38 17 $0.60 @1k
MAX4646  Closed $0.60 @1k
See All Switches and Multiplexers (Low Voltage) (160)

Diagram
MAX4645, MAX4646: Pin Configuration
Pin Configuration

Design Guides
  • Signal Routing & Protection (PDF)

    • Reliability Reports
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    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: 1-19 of 19

    MAX4645 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4645EUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4645EUT+  
    		Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4645EUT    
    		Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4645EUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4645EUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4645EUT-T    
    		Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4645EUT+T    
    		Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4645EUA+  
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4645EUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX4645EUA    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4645EUA-T    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4646 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4646EUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4646EUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4646EUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4646EUT-T    
    		Active SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4646EUA+  
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4646EUA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX4646EUA    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4646EUA-T    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    Related Products
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    MAX4626, MAX4627, MAX4628 0.5Ω, Low-Voltage, Single-Supply SPST Analog Switches
    MAX4561, MAX4568, MAX4569 ±15kV ESD-Protected, Low-Voltage, SPDT/SPST, CMOS Analog Switches
    MAX4594, MAX4595, MAX4596, MAX4597 Low-Voltage, Single-Supply, 10Ω SPST CMOS Analog Switches

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    Document Ref.: 19-1653; Rev 2; 2004-03-18
    This page last modified: 2009-10-27


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