Diodes Incorporated

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Low Voltage Bidirectional SPDT Analog Switch

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The PSMUX1247 is a general purpose SPDT CMOS Analog Switch. It can be used as an analog switch or as a low-delay bus switch. Specified over a wide operating power supply voltage, 1.08V to 5.5V.

Break-before-make switching prevents both switches being enabled simultaneously. This eliminates signal disruption during switching.

The device supports bidirectional analog and digital signals on the source (Sx) and drain (D) pins ranging from GND to VDD. A low supply current of 4 nA enables use in portable applications.

All logic inputs have 1.8V logic compatible thresholds, ensuring both TTL and CMOS logic compatibility when operating in the valid supply voltage range.


  • Wide VDD Range: 1.08V to 5.5V
  • Low Supply Current: 4nA
  • Low On-Resistance 3Ω
  • 8 V Logic Compatible
  • Voltages on the control pins to be applied before the supply pin
  • Signal Passing Bandwidth, 500MHz
  • Transition Time: 14 ns
  • Break-before-make switching
  • Rail-to-Rail Signal Range
  • High Off Isolation: -65dB @ 1MHz
  • Crosstalk Rejection Reduces Signal Distortion: -65dB @ 1MHz
  • Extended Industrial Temperature Range: -40°C to 125°C
  • ESD Protection : 2kV(HBM)
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. "Green" Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/
  • Packaging (Pb-free & Green): 6-pin SC-70 (C)


  • PC Motherboards
  • Notebooks
  • Servers
  • Smartphones
  • Remote Radio Units
  • Active Antenna System mMIMO (AAS)
  • Barcode Scanners
  • Motor Drives
  • Building Automation
  • Video Surveillance
  • Electronic Point of Sales
  • Appliances
  • Consumer Audio

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
Configuration 1-Channel SPDT
Differential Channels 0
HotInsertion 1
Lanes 1
Rail-to-Rail Yes
Signal Type Single Ended
Single Ended Channels 1
Voltage 1.08V to 5.5V

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