TS3A4751 0.9-Ohm Low-Voltage Single-Supply 4-Channel SPST Switch | TI.com

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0.9-Ohm Low-Voltage Single-Supply 4-Channel SPST Switch



The TS3A4751 device is a bidirectional, 4-channel, normally open (NO) single-pole single-throw (SPST) analog switch that operates from a single 1.6-V to 3.6-V supply. This device has fast switching speeds, handles rail-to-rail analog signals, and consumes very low quiescent power.

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

The TS3A4751 device has four normally open (NO) switches. The TS3A4751 is available in a 14-pin thin shrink small-outline package (TSSOP) and in space-saving 14-pin VQFN (RGY) and micro X2QFN (RUC) packages.


  • Low ON-State Resistance (RON)
    • 0.9 Ω Max (3-V Supply)
    • 1.5 Ω Max (1.8-V Supply)
  • RON Flatness: 0.4 Ω Max (3-V)
  • RON Channel Matching
    • 0.05 Ω Max (3-V Supply)
    • 0.15 Ω Max (1.8-V Supply)
  • 1.6-V to 3.6-V Single-Supply Operation
  • 1.8-V CMOS Logic Compatible (3-V Supply)
  • High Current-Handling Capacity (100 mA Continuous)
  • Fast Switching: tON = 5 ns, tOFF = 4 ns
  • Supports Both Digital and Analog Applications
  • ESD Protection Exceeds JESD-22
    • ±4000-V Human Body Model (A114-A)
    • 300-V Machine Model (A115-A)
    • ±1000-V Charged-Device Model (C101)

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Part number Order Configuration Number of channels (#) Ron (Typ) (Ohms) Bandwidth (MHz) Rating Operating temperature range (C) Package Group Input/output continuous current (Max) (mA) Supply current (Typ) (uA) Features ON-state leakage current (Max) (µA) CON (Typ) (pF)
TS3A4751 Order now 1:1 SPST     4     0.7     125     Catalog     -40 to 85     QFN | 14
TSSOP | 14
VQFN | 14    
100     2.5     Supports SPI signals
Supports JTAG signals    
0.005     43