5Ω, Quad, SPST, CMOS Analog Switches

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The MAX4604/MAX4605/MAX4606 quad analog switches feature 5Ω max on-resistance. On-resistance is matched between switches to 0.5Ω max and is flat (0.5Ω max) over the specified signal range. Each switch can handle rail-to-rail analog signals. The off-leakage current is only 2.5nA max at +85°C. These analog switches are ideal in low-distortion applications and are the preferred solution over mechanical relays in automatic test equipment or in applications where current switching is required. These switches have low power requirements, require less board space, and are more reliable than mechanical relays.

The MAX4604 has four normally closed (NC) switches, the MAX4605 has four normally open (NO) switches, and the MAX4606 has two NC and two NO switches.

These switches operate from a single supply of +4.5V to +36V or from dual supplies of ±4.5V to ±20V. All digital inputs have +0.8V and +2.4V logic thresholds, ensuring TTL/CMOS logic compatibility when using ±15V supplies or a single +12V supply.
MAX4604, MAX4605, MAX4606: Pin Configuration MAX4604, MAX4605, MAX4606: Pin Configuration Enlarge+

Key Features

  • Low On-Resistance (5Ω max)
  • Guaranteed RON Match Between Channels (0.5Ω max)
  • Guaranteed RON Flatness over Specified Signal Range (0.5Ω max)
  • Rail-to-Rail Signal Handling
  • Guaranteed ESD Protection > 2000V per Method 3015.7
  • Single-Supply Operation: +4.5V to +36V
  • Dual-Supply Operation: ±4.5V to ±20V
  • TTL/CMOS-Compatible Control Inputs


  • Audio-Signal Routing
  • Avionics
  • Communication Systems
  • PBX/PABX Systems
  • Reed Relay Replacement
  • Test Equipment

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

Part NumberFunctionsConfig.# ChannelsNormal PositionVSUPPLY (Dual)
(min)(max)(max)(max)(max)(max)(See Notes)
MAX4604 SwitchSPST4Closed4.52050.512013022515034
SOIC (N)/16
$3.95 @1k
MAX4605 Open
SOIC (N)/16
$3.55 @1k
MAX4606 Open/Closed
SOIC (N)/16
$3.47 @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: MAX4606.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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