74HC1G66; 74HCT1G66

Single-pole single-throw analog switch

74HC1G66 and 74HCT1G66 are high-speed Si-gate CMOS devices. They are single-pole single-throw analog switches. The switch has two input/output pins (Y and Z) and an active HIGH enable input pin (E). When pin E is LOW, the analog switch is turned off.

The non-standard output currents are equal to those of the 74HC4066 and 74HCT4066.

Features and benefits

  • Wide supply voltage range from 2.0 V to 10.0 V for the 74HC1G66
  • Very low ON resistance:
    • 45 Ω (typ.) at VCC = 4.5 V
    • 30 Ω (typ.) at VCC = 6.0 V
    • 25 Ω (typ.) at VCC = 9.0 V
  • High noise immunity
  • Low power dissipation
  • Multiple package options
  • ESD protection:
    • HBM JESD22-A114E exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 Cel to +85 Cel and -40 Cel to +125 Cel


Type numberProduct statusConfigurationVCC (V)Logic switching levelsRON (Ω)RON(FLAT) (Ω)f(-3dB) (MHz)THD (%)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC1G66GVProductionSPST-NO2.0 - 9.0CMOS105232000.02very low-40~12521630.4128TSOP5
74HC1G66GWProductionSPST-NO2.0 - 9.0CMOS105232000.02very low-40~12525735.8134TSSOP5
74HCT1G66GVProductionSPST-NO4.5 - 5.5TTL118231800.04very low-40~12521630.4128TSOP5
74HCT1G66GWProductionSPST-NO4.5 - 5.5TTL118231800.04very low-40~12525735.8134TSSOP5


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT753Reel 7" Q3/T4, ReverseActiveH6674HC1G66GV,125
( 9352 718 87125 )
SOT353-1Reel 7" Q3/T4, ReverseActiveHL74HC1G66GW,125
( 9352 457 70125 )
SOT753Reel 7" Q3/T4, ReverseActiveT6674HCT1G66GV,125
( 9352 718 86125 )
SOT353-1Reel 7" Q3/T4, ReverseActiveTL74HCT1G66GW,125
( 9352 457 60125 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC1G66GV74HC1G66GV,12574HC1G66GVweek 36, 200339.61.57.62E411
74HC1G66GW74HC1G66GW,12574HC1G66GWweek 36, 200339.61.57.62E411
74HCT1G66GV74HCT1G66GV,12574HCT1G66GVweek 36, 200339.61.57.62E411
74HCT1G66GW74HCT1G66GW,12574HCT1G66GWweek 36, 200339.61.57.62E411
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
74HC_HCT1G66Single-pole single-throw analog switchData sheet2017-07-20
AN10161PicoGate Logic footprintsApplication note2002-10-29
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
SOT353-1plastic, thin shrink small outline package; 5 leads; 0.65 mm pitch; 2 mm x 1.25 mm x 0.95 mm bodyPackage information2020-04-21
SOT753plastic, surface-mounted package; 5 leads; 0.95 mm pitch; 2.9 mm x 1.5 mm x 1 mm bodyPackage information2020-04-21
MAR_SOT753MAR_SOT753 TopmarkTop marking2013-06-03


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