Low-ohmic single-pole double-throw analog switch

The XS3A1T3157 is a low-ohmic single-pole double-throw analog switch suitable for use as an analog or digital 2:1 multiplexer/demultiplexer. It has a digital select input (S), two independent inputs/outputs (Y1 and Y2) and a common input/output (Z).

Schmitt trigger action at the digital input makes the circuit tolerant to slower input rise and fall times. Low threshold digital input allows this device to be driven by 1.8 V logic levels in 3.3 V applications without significant increase in supply current ICC. This makes it possible for the XS3A1T3157 to switch 4.3 V signals with a 1.8 V digital controller, eliminating the need for logic level translation. The XS3A1T3157 allows signals with amplitude up to VCC to be transmitted from Z to Y1 or Y2, or from Y1 or Y2 to Z. It'slowONresistance (0.5 Ω) and flatness (0.13 Ω) ensures minimal attenuation and distortion of transmitted signals.

Features and benefits

  • Wide supply voltage range from 1.4 V to 4.3 V
  • Very low ON resistance (peak):
    • 1.6 Ω (typical) at VCC = 1.4 V
    • 1.0 Ω (typical) at VCC = 1.65 V
    • 0.55 Ω (typical) at VCC = 2.3 V
    • 0.50 Ω (typical) at VCC = 2.7 V
    • 0.50 Ω (typical) at VCC = 4.3 V
  • Break-before-make switching
  • High noise immunity
  • ESD protection:
    • HBM ANSI/ESDA/JEDEC JS-001 exceeds 8000 V
    • CDM ANSI/ESDA/JEDEC JS-002 exceeds 1000 V
    • IEC61000-4-2 contact discharge exceeds 8000 V for switch ports
  • CMOS low-power consumption
  • Latch-up performance exceeds 100 mA per JESD78 Class II Level A
  • Low-switching threshold levels
  • Control input accepts voltages above supply voltage
  • Very low supply current, even when input is below VCC
  • High current handling capability (350 mA continuous current under 3.3 V supply)
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C


  • Mobile phone
  • Tablet / Notebook
  • Wearables


Type numberProduct statusConfigurationVCC (V)Logic switching levelsRON (Ω)RON(FLAT) (Ω)f(-3dB) (MHz)THD (%)Xtalk (dB)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Rth(j-c) (K/W)Package name
XS3A1T3157GMProductionSPDT-Z1.4 - 4.3CMOS/LVTTL0.50.2400.03-90ultra low-40~125247119XSON6
XS3A1T3157GSProductionSPDT-Z1.4 - 4.3CMOS/LVTTL0.50.2400.03-90ultra low-40~125247193XSON6


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
Reel 7” Q1/T1 or Q2/T3ActiveaLXS3A1T3157GMX
( 9356 909 68115 )
Reel 7" Q3/T4, ReverseActiveaLXS3A1T3157GSH
( 9356 909 69125 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
XS3A1T3157Low-ohmic single-pole double-throw analog switchData sheet2020-03-17
xs3a1t3157XS3A1T3157 IBIS modelIBIS model2020-09-11
MAR_SOT1202MAR_SOT1202 TopmarkTop marking2013-06-03
REFLOW_BG-BD-1Reflow soldering profileReflow soldering2021-04-06
MAR_SOT886MAR_SOT886 TopmarkTop marking2013-06-03
REFLOW_BG-BD-1Reflow soldering profileReflow soldering2021-04-06


Find answers to your design questions on this page. If available you can find information in our Nexperia Support Community or you can find Nexperia models and Design tools.


File nameTitleTypeDate
xs3a1t3157XS3A1T3157 IBIS modelIBIS model2020-09-11

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