0.9-Ohm Low-Voltage Single-Supply Dual SPST Analog Switch



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.


  • 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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Parametrics Compare all products in Analog Switches/Muxes

Number of Channels (#)
Power Supply Type
Vss (Min) (V)
Vss (Max) (V)
Vdd (Min) (V)
Vdd (Max) (V)
Ron (Typ) (Ohms)
Bandwidth (MHz)
Operating Temperature Range (C)
Package Size: mm2:W x L (PKG)
Package Group
Supply Range (Max)
Ron (Max) (Ohms)
Input/Output Continuous Current (Max) (mA)
Supply Current (Max) (uA)
OFF-state leakage current (Max) (µA)
ON-state leakage current (Max) (µA)
Input/Output ON-state Capacitance (Typ) (pF)
Input/Output OFF-state Capacitance (Typ) (pF)
ESD Charged Device Model (kV)
VIL (Max) (V)
VIH (Min) (V)
TS3A4741 TS3A4742
1:1 SPST    1:1 SPST   
2    2   
Single    Single   
N/A    N/A   
N/A    N/A   
1.6    1.6   
3.6    3.6   
0.7    0.7   
125    125   
Catalog    Catalog   
-40 to 85    -40 to 85   
8SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
8SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
3.6    3.6   
2    2   
100    100   
0.75    0.75   
0.018    0.018   
0.005    0.005   
43    43   
20    20   
1    1   
4    4   
0.5    0.5   
1    1