74HC2G66; 74HCT2G66

Dual single-pole single-throw analog switch

The 74HC2G66; 74HCT2G66 is a dual single pole, single-throw analog switch. Each switch has two input/output terminals (nY and nZ) and a digital enable input (nE). When nE is LOW, the analog switch is turned off. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Wide supply voltage range from 2.0 V to 10.0 V for 74HC2G66
  • Very low ON resistance:
    • 41 Ω (typ.) at VCC = 4.5 V
    • 30 Ω (typ.) at VCC = 6.0 V
    • 21 Ω (typ.) at VCC = 9.0 V
  • High noise immunity
  • Low power dissipation
  • 25 mA continuous switch current
  • Multiple package options
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from –40 ℃ to +85 ℃ and –40 ℃ to +125 ℃


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)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC2G66DCProductionSPST-NO2.0 - 9.0CMOS105232000.02-60very low-40~12519428.3104VSSOP8
74HC2G66DPProductionSPST-NO2.0 - 9.0CMOS105232000.02-60very low-40~12520016.3101TSSOP8
74HC2G66GTProductionSPST-NO2.0 - 9.0CMOS105232000.02-60very low-40~1252954.4135XSON8
74HCT2G66DCProductionSPST-NO4.5 - 5.5TTL118231800.04-60very low-40~12519428.3104VSSOP8
74HCT2G66DPProductionSPST-NO4.5 - 5.5TTL118231800.04-60very low-40~12520016.3101TSSOP8
74HCT2G66GTProductionSPST-NO4.5 - 5.5TTL118231800.04-60very low-40~1252954.4135XSON8


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT765-1Reel 7" Q3/T4, ReverseActiveH6674HC2G66DC,125
( 9352 747 85125 )
SOT505-2Reel 7" Q3/T4, ReverseActiveH6674HC2G66DP,125
( 9352 729 45125 )
SOT833-1Reel 7” Q1/T1 or Q2/T3ActiveH6674HC2G66GT,115
( 9352 936 04115 )
SOT765-1Reel 7" Q3/T4, ReverseActiveT6674HCT2G66DC,125
( 9352 747 97125 )
SOT505-2Reel 7" Q3/T4, ReverseActiveT6674HCT2G66DP,125
( 9352 729 44125 )
SOT833-1Reel 7” Q1/T1 or Q2/T3ActiveT6674HCT2G66GT,115
( 9352 936 05115 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC2G66DC74HC2G66DC,12574HC2G66DCAlways Pb-free39.31.37.69E811
74HC2G66DP74HC2G66DP,12574HC2G66DPweek 41, 200439.31.37.69E811
74HC2G66GT74HC2G66GT,115Not available
You can request this via a support request
Always Pb-free39.31.37.69E811
74HCT2G66DC74HCT2G66DC,12574HCT2G66DCAlways Pb-free39.31.37.69E811
74HCT2G66DP74HCT2G66DP,12574HCT2G66DPweek 41, 200439.31.37.69E811
74HCT2G66GT74HCT2G66GT,11574HCT2G66GTAlways Pb-free39.31.37.69E811
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
74HC_HCT2G66Dual single-pole single-throw analog switchData sheet2018-11-06
AN10161PicoGate Logic footprintsApplication note2002-10-29
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
SOT505-2plastic, thin shrink small outline package; 8 leads; 0.65 mm pitch; 3 mm x 3 mm x 1.1 mm bodyPackage information2020-04-21
SOT833-1plastic, leadless extremely thin small outline package; 8 terminals; 0.5 mm pitch; 1 mm x 1.95 mm x 0.5 mm bodyPackage information2020-04-21
MAR_SOT833MAR_SOT833 TopmarkTop marking2013-06-03
SOT765-1plastic, very thin shrink small outline package; 8 leads; 0.5 mm pitch; 2 mm x 2.3 mm x 1 mm bodyPackage information2020-04-21


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