Low-capacitance, 2:1 (SPDT) 4-channel, powered-off protection switch with 1.8-V logic


Product details


Configuration 2:1 SPDT Number of channels (#) 4 Power supply voltage - single (V) 1.2, 1.8, 2.5, 3.3 Ron (Typ) (Ohms) 1.7 ON-state leakage current (Max) (µA) 0.01 Bandwidth (MHz) 1800 Operating temperature range (C) -40 to 125 Features 1.2-V compatible control inputs, 1.8-V compatible control inputs, Powered-off protection, Supports SPI signals, Supports input voltage beyond supply Input/output continuous current (Max) (mA) 30 Rating Catalog CON (Typ) (pF) 10 Supply current (Typ) (uA) 7 open-in-new Find other Analog switches & muxes

Package | Pins | Size

DSBGA (YCJ) 16 2 mm² 1.339 x 1.339 open-in-new Find other Analog switches & muxes


  • Wide Supply Range: 1.08 V to 3.6 V
  • Low On-Capacitance: 5 pF
  • High Bandwidth: 1.8 GHz
  • -40°C to +125°C Operating Temperature
  • 1.2 V Logic Compatible
  • Supports Input Voltage Beyond Supply
  • Integrated Pull Down Resistor on Logic Pins
  • Bidirectional Signal path
  • Fail-Safe Logic
  • Powered-Off Protection

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The TMUX1575 is a complementary metal-oxide semiconductor (CMOS) switch in a 2:1 (SPDT) configuration with 4-channels. The small size and operating supply voltage of 1.08 V to 3.6 V allows for use in a broad array of applications from servers and communication equipment to personal electronics applications. The device supports bidirectional analog and digital signals on the source (SxA, SxB) and drain (Dx) pins and can pass signals up to VDD x 2 with a maximum input/output voltage of 3.6 V.

Powered-off protection on the signal path of the TMUX1575 provides isolation when the supply voltage is removed (VDD = 0 V). Without this protection feature, switches can back-power the supply rail through an internal ESD diode and cause potential damage to the system.

Fail-safe logic circuitry allows voltages on the logic control pins to be applied before the supply pin, protecting the device from potential damage. All control inputs have 1.2 V logic compatible thresholds, eliminating the need for external logic translation. Integrated pull down resistor on the logic pins removes external components to reduce system size and cost.

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Technical documentation

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Type Title Date
* Data sheet TMUX1575 2:1 (SPDT) 4-Channel, Powered-Off Protected Switch in WCSP with 1.2 V Logic datasheet Oct. 22, 2020
Application note 1.8 V Logic for Muxes and Signal (Rev. A) Jan. 06, 2021
Application note Eliminate Power Sequencing with Powered-off Protection Signal Switches (Rev. C) Jan. 06, 2021
Application note Enabling SPI-Based Flash Memory Expansion by Using Multiplexers (Rev. A) Jan. 06, 2021
User guide TMUX1575 Evaluation Module Dec. 15, 2020
Certificate TMUX1575EVM EU Declaration of Conformity (DoC) Aug. 10, 2020
Technical article Roll with the design punches and overcome power-sequencing challenges Jul. 29, 2019

Design & development

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Hardware development

document-generic User guide

The 16YCJTM1575EVM supports evaluation of the TMUX1575 device in the 16-pin WSCP (YCJ) package. This evaluation module can be used for quick prototyping and testing of the TMUX1575 device specifically for DC parameters.

  • Quick prototyping and testing setup for the TMUX1575 16-pin WSCP package (YCJ)
  • SMA Connectors or 100Mil Jumpers for Signal Inputs into TMUX1575
  • Two power supply decoupling capacitor (1 × 0.1 μF and 1 × 1 µF)
  • 0603 component pads to add resistors and capacitors as loads for additional testing

CAD/CAE symbols

Package Pins Download
DSBGA (YCJ) 16 View options

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