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MAX4649
  • MAX4649

MAX4649

PRODUCTION

45 Ohm SPDT Analog Switch in SOT23-8 High-Voltage, SPDT Analog Switch in Tiny SOT

Analog Devices MAX4649 Product Info

10 February 2026 3

Features

  • Low On-Resistance 45Ω max ±15V Supplies
  • 5Ω max RON Match Between Channels
  • Guaranteed RON Flatness Over Specified Signal Range (7Ω max)
  • VL Logic Supply Not Required
  • Rail-to-Rail Signal Handling
  • +9V to +36V Single Supply Operation
  • ±4.5V to ±20V Dual Supply Operation
  • Low Crosstalk: -92dB at 1MHz
  • High Off-Isolation: -92dB at 1MHz
  • TTL/CMOS-Compatible Control Inputs

Part details & applications

The MAX4649 is a dual-supply, single-pole/double-throw (SPDT) analog switch. On-resistance is 45Ω max and flat (7Ω max) over the specified signal range. The MAX4649 can handle rail-to-rail analog signals, and conducts analog or digital signals equally well in either direction. This switch operates from a single +9V to +36V supply, or from ±4.5V to ±20V dual supplies. The primary application areas are in the switching and routing of signals in telecommunications and test equipment.

The MAX4649 features a switch transition time of 130ns max at +25°C, and a guaranteed break-before-make switching time of 5ns. Off-leakage current is only 2nA max at +25°C.

The MAX4649 is available in a tiny 8-pin SOT23 package.

Applications

  • Bridges
  • High-Speed Access (Telecom)
  • Modems
  • Network Hubs, Switches, Routers
  • Routers/Switches
  • Telecom Switches
  • X-Ray and Ultrasound Diagnostics

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