2-Ω low RON, -12-V, 2:1 (SPDT) general purpose switch with no overshoot when switching inputs


Product details


Configuration 2:1 SPDT Number of channels (#) 1 Power supply voltage - single (V) 5 Ron (Typ) (Ohms) 2.3 ON-state leakage current (Max) (µA) 15 Bandwidth (MHz) 200 Operating temperature range (C) -55 to 125 Features Fail-safe logic, Supports negative voltages Input/output continuous current (Max) (mA) 100 Rating Catalog CON (Typ) (pF) 90 Supply current (Typ) (uA) 20 open-in-new Find other Analog switches & muxes

Package | Pins | Size

SOT-SC70 (DCK) 6 4 mm² 2 x 2.1 open-in-new Find other Analog switches & muxes


  • Negative Voltage Support: -4 V to -12 V
  • Rail-to-Rail Operation
  • Bidirectional Signal Path
  • 1.8 V Logic Compatible
  • Fail-Safe Logic
  • High Continuous Current Support: 150 mA
  • Low On-Resistance: 1.8 Ω
  • -55°C to +125°C Operating Temperature
  • Break-Before-Make Switching
  • ESD Protection HBM: 2000 V
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The TMUX4157N is a general purpose 2:1, single-pole double-throw (SPDT), switch that supports a negative supply rail only. The supply voltage can range from -4 V to -12 V and the device supports bidirectional analog and digital signals on the source (Sx) and drain (D) pins ranging from GND to VSS. The state of the select pin (SEL) controls which of the two sources pins are connected to the drain pin.

While TMUX4157N supports negative voltages on the supply pin and signal path, the logic input pin is controlled with a positive voltage to allow interfacing with typical control logic circuitry such as a GPIO signal. The logic input pin has 1.8 V logic compatible thresholds and can operate as high as 5.5 for added system flexibility. Fail-Safe Logic circuitry allows voltages on the control pins to be applied before the supply pin, protecting the device from potential damage.

Fast transition times and high continuous current through the switch make the TMUX4157N well suited for applications where the system needs to quickly switch between two different voltage inputs.



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Technical documentation

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Type Title Date
* Data sheet TMUX4157N -12 V Low RON, 2:1 (SPDT) Negative Voltage Switch with 1.8-V Logic Control datasheet (Rev. A) Mar. 26, 2021
Technical article Protecting your RF amplifier stage with analog switches Feb. 19, 2020

Design & development

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Hardware development

document-generic User guide

The EVM-LEADED1 board allows for quick testing and bread boarding of TI's common leaded packages.  The board has footprints to convert TI's D, DBQ, DCT,DCU, DDF, DGS, DGV, and PW surface mount packages to 100mil DIP headers.     

  • Quick testing of TI's leaded surface mount packages 
  • Allows leaded suface mount packages to be plugged into 100mil spaced bread board 
  • Supports TI's 8 most popular leaded packages with a single panel

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SCDM255.ZIP (43 KB) - IBIS Model

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SC70 (DCK) 6 View options

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