5-V, low-leakage current, 1:1 (SPST) 2-channel, precision switch (1 active high, 1 active low)


Product details


Configuration 1:1 SPST Number of channels (#) 2 Power supply voltage - single (V) 1.2, 1.8, 2.5, 3.3, 5 Ron (Typ) (Ohms) 1.9 ON-state leakage current (Max) (µA) 0.002 Bandwidth (MHz) 300 Operating temperature range (C) -40 to 125 Features 1.8-V compatible control inputs, Break-before-make, Fail-safe logic Input/output continuous current (Max) (mA) 30 Rating Catalog CON (Typ) (pF) 17 Supply current (Typ) (uA) 0.007 open-in-new Find other Analog switches & muxes

Package | Pins | Size

VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Analog switches & muxes


  • Wide supply range: 1.08 V to 5.5 V
  • Low leakage current: 3 pA
  • Low charge injection: –1.5 pC
  • Low on-resistance: 1.9 Ω
  • –40°C to +125°C operating temperature
  • 1.8 V Logic compatible
  • Fail-safe logic
  • Rail to rail operation
  • Bidirectional signal path
  • Break-before-make switching
  • ESD protection HBM: 2000 V
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The TMUX1121, TMUX1122, and TMUX1123 are precision complementary metal-oxide semiconductor (CMOS) devices that have two independently selectable 1:1, single-pole, single-throw (SPST) switches. Wide operating supply of 1.08 V to 5.5 V allows for use in a broad array of applications from medical equipment to industrial systems. The device supports bidirectional analog and digital signals on the source (Sx) and drain (Dx) pins ranging from GND to VDD.

The switches of the TMUX1121 are turned on with Logic 1 on the appropriate logic control inputs, while Logic 0 is required to turn on switches in the TMUX1122. The two channels of the TMUX1123 are split with channel one supporting Logic 1, while channel two supports Logic 0. The TMUX1123 exhibits break-before-make switching, allowing the device to be used in cross-point switching applications.

The TMUX112x devices are part of the precision switches and multiplexers family. These devices have very low on and off leakage currents and low charge injection, allowing them to be used in high precision measurement applications. A low supply current of
7 nA and small package options enable use in portable applications.

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Technical documentation

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Type Title Date
* Data sheet TMUX112x 5-V, Low-Leakage-Current, 1:1 (SPST), 2-Channel Precision Switches datasheet (Rev. A) Sep. 24, 2019
Application note Selecting the Right Texas Instruments Signal Switch (Rev. C) Aug. 06, 2021
Application note Multiplexers and Signal Switches Glossary (Rev. A) Jun. 09, 2021

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

  • Simplifies prototyping of SMT IC’s
  • Supports 6 common package types
  • Low Cost
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

Design tools & simulation

SCDM233.ZIP (8 KB) - IBIS Model
SCDM238.ZIP (72 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
VSSOP (DGK) 8 View options

Ordering & quality

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