0.9-Ω, 3.3-V, 1:1 (SPST), 2-channel analog switch (active low) with 1.8-V input logic


Product details


Configuration 1:1 SPST Number of channels (#) 2 Power supply voltage - single (V) 1.8, 2.5, 3.3 Ron (Typ) (Ohms) 0.7 ON-state leakage current (Max) (µA) 0.005 Bandwidth (MHz) 125 Operating temperature range (C) -40 to 85 Features Supports I2C signals, 1.8-V compatible control inputs Input/output continuous current (Max) (mA) 100 Rating Catalog CON (Typ) (pF) 43 open-in-new Find other Analog switches & muxes

Package | Pins | Size

SOT-23 (DCN) 8 8 mm² 2.9 x 2.8 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Analog switches & muxes


  • Low ON-State Resistance (Ron)
    • 0.9-Ω Max (3-V Supply)
    • 1.5-Ω Max (1.8-V Supply)
  • 0.4-Ω Max Ron Flatness (3-V Supply)
  • 1.6-V to 3.6-V Single-Supply Operation
  • Available in SOT-23 and VSSOP Packages
  • High Current-Handling Capacity (100 mA
  • 1.8-V CMOS Logic Compatible (3-V Supply)
  • Fast Switching: tON = 14 ns, tOFF = 9 ns
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The TS3A4741 and TS3A4742 are bi-directional, 2-channel single-pole/single-throw (SPST) analog switches with low ON-state resistance (Ron), low-voltage, that operate from a single 1.6-V to 3.6-V supply. These devices have fast switching speeds, handle rail-to-rail analog signals, and consume very low quiescent power.

The digital logic input is 1.8-V CMOS compatible when using a single 3-V supply.

The TS3A4741 has two normally open (NO) switches, and the TS3A4742 has two normally closed (NC) switches.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TS3A474x 0.9-Ω Low-Voltage Single-Supply 2-Channel SPST Analog Switches datasheet (Rev. F) Dec. 03, 2015
Application note Selecting the Right Texas Instruments Signal Switch (Rev. B) Apr. 02, 2020
Application note Multiplexers and Signal Switches Glossary Mar. 06, 2020
Application note 1.8 V Logic for Muxes and Signal May 16, 2018
Application note Preventing Excess Power Consumption on Analog Switches Jul. 03, 2008
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004

Design & development

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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

CAD/CAE symbols

Package Pins Download
SOT-23 (DCN) 8 View options
VSSOP (DGK) 8 View options

Ordering & quality

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