MAX4066, MAX4066A

Low-Cost, Low-Voltage, Quad, SPST, CMOS Analog Switch

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Active: In Production.


The MAX4066/MAX4066A quad, SPST, CMOS analog switches are designed to provide superior performance over the industry-standard devices. These new switches feature guaranteed operation from +2.0V to +16V and are fully specified at 3V, 5V, and 12V. Both parts offer 45Ω on-resistance and 2Ω channel-to-channel matching at 12V, plus 4Ω flatness over the specified signal range.

Each device is controlled by TTL/CMOS input levels and can be used as a bilateral switch or multiplexer/demultiplexer.

Low off leakage current (100pA for the MAX4066A) and low power consumption (0.5µW) make the MAX4066/ MAX4066A ideal for battery-operated equipment. These parts are also suitable for low-distortion audio applications. Both devices are available in 14-pin DIP and SO packages, as well as a 16-pin QSOP. ESD protection is greater than 2000V per Method 3015.7.

Data Sheet

Download this datasheet in PDF formatDownload Rev 1 (PDF, 128kB)
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Key Features

  • Pin Compatible with 74HC4066
  • Guaranteed On-Resistance:
    • 170Ω max (3V supply)
    • 45Ω max (12V supply)
  • Guaranteed Match Between Channels:
    • 4Ω max (MAX4066)
    • 2Ω max (MAX4066A)
  • Guaranteed Low Leakage Currents:
    • 1nA at +25°C (MAX4066)
    • 100pA at +25°C (MAX4066A)
  • Single-Supply Operation from +2.0V to +16V
  • V+ to GND Signal Handling
  • TTL/CMOS-Logic Compatible
  • Low Power Consumption: 0.5µW
  • Low Crosstalk: -86dB
  • Low Off Isolation: -58dB
  • Low Distortion: 0.03%
  • Wide Bandwidth: > 100MHz


  • Audio/Video Signal Routing
  • Battery-Powered Applications
  • Communication Systems
  • Low-Voltage Data Acquisition
  • Sample-and-Hold Circuits

Key Specifications:

Switches and Multiplexers (Mid and High Voltage)
Part Number Functions Config. Channels Normal Position VSUPPLY (Single)
VSUPPLY (Single)
min max max max min max See Notes
MAX4066  Switch SPST 4 Open 2 16 45 100 1 125 75 10 22 9 $1.76 @1k
MAX4066A  0.1 $2.35 @1k
See All Switches and Multiplexers (Mid and High Voltage) (312)

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.


MAX4066, MAX4066A: Pin Configuration
Pin Configuration

Notes and Comments

Low-voltage, 74HC4066 upgrade (MAX4066)
Low leakage (MAX4066A)

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Document Ref.: 19-0439 Rev 1; 1996-03-01
This page last modified: 2009-11-10