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High-Current, 10Ω, SPST, CMOS Analog Switches

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • High Continuous Current Handling
    • 300mA (MAX4655/MAX4656)
    • 150mA (MAX4657/MAX4658)
  • High Peak Current Handling
    • 400mA (MAX4655/MAX4656)
    • 300mA (MAX4657/MAX4658)
  • 10Ω (max) On-Resistance (±15V supplies)
  • VL Not Required
  • 1Ω (max) RON Flatness over Specified Signal Range
  • Rail-to-Rail Signal Handling
  • +12V Single Supply or ±15V Dual Supply Operation
  • Pin Compatible with DG417, DG418

Applications/Uses

  • Audio Signal Routing
  • Audio Systems
  • Communication Systems
  • PBX/PABX Systems
  • PC Multimedia Boards
  • Redundant/Backup Systems
  • Relay Replacement
  • Test Equipment
  • XDSL Modems

Description

Maxim's MAX4655–MAX4658 are medium-voltage CMOS analog switches with low on-resistance of 10Ω max, specifically designed to handle large switch currents. With a switch capability of up to 400mA peak current and 300mA continuous current (MAX4655/MAX4656), and up to 300mA peak current and 150mA continuous current (MAX4657/MAX4658), these parts can switch loads as low as 25Ω. They can replace reed relays with a million times the speed and virtually unlimited number of lifetime cycles. Normal power consumption is only 3mW, whether the switch is on or off. These parts are TTL/CMOS compatible and will switch any voltage within its power-supply range.

These are SPST (single-pole/single-throw) switches. The MAX4655/MAX4657 are normally closed (NC), while the MAX4656/MAX4658 are normally open (NO). The difference between the MAX4655/MAX4656 and the MAX4657/MAX4658 is in the power dissipation of their packages. Refer to the Absolute Maximum Ratings and the Electrical Characteristics in the full data sheet.

The MAX4655–MAX4658 power-supply range is from ±4.5V to ±20V for dual-supply operation and +9V to +40V for single-supply operation. These switches can operate from any combination of supplies, within a 40V V+ to V- range. They conduct equally well in either direction and can handle rail-to-rail analog signals. The offleakage current is only 1nA max at TA = +25°C. They are available in 8-pin µMAX®, TDFN, and SO packages, with exposed paddle options for high-power applications.

Simplified Block Diagram

MAX4655, MAX4656, MAX4657, MAX4658: Block Diagram MAX4655, MAX4656, MAX4657, MAX4658: Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .