74HC27; 74HCT27

Triple 3-input NOR gate

The 74HC27; 74HCT27 is a triple 3-input NOR gate. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features

  • Complies with JEDEC standard no. 7A
  • Input levels:
    • For 74HC27: CMOS level
    • For 74HCT27: TTL level
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Multiple package options
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)No of bitsPower dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC27BQProduction2.0 - 6.0CMOS± 5.28.0363low-40~12510721.775DHVQFN14
74HC27DProduction2.0 - 6.0CMOS± 5.28.0363low-40~12510920.968SO14
74HC27PWProduction2.0 - 6.0CMOS± 5.28.0363low-40~1251428.168TSSOP14
74HCT27BQProduction4.5 - 5.5TTL± 410363low-40~12510721.775DHVQFN14
74HCT27DProduction4.5 - 5.5TTL± 410363low-40~12510920.968SO14
74HCT27PWProduction4.5 - 5.5TTL± 410363low-40~1251428.168TSSOP14

Package

Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC27BQ
DHVQFN14
(SOT762-1)
SOT762-1Reel 7" Q1/T1ActiveHC2774HC27BQ,115
( 9352 836 78115 )
74HC27D
SO14
(SOT108-1)
SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HC27D74HC27D,653
( 9337 141 70653 )
Bulk Pack, CECCActive74HC27D74HC27D,652
( 9337 141 70652 )
74HC27PW
TSSOP14
(SOT402-1)
SOT402-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC2774HC27PW,118
( 9351 890 10118 )
Bulk PackActiveHC2774HC27PW,112
( 9351 890 10112 )
74HCT27BQ
DHVQFN14
(SOT762-1)
SOT762-1Reel 7" Q1/T1ActiveHCT2774HCT27BQ,115
( 9352 836 79115 )
74HCT27D
SO14
(SOT108-1)
SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HCT27D74HCT27D,653
( 9337 141 80653 )
Bulk Pack, CECCActive74HCT27D74HCT27D,652
( 9337 141 80652 )
74HCT27PW
TSSOP14
(SOT402-1)
SOT402-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHCT2774HCT27PW,118
( 9351 895 80118 )
Bulk PackActiveHCT2774HCT27PW,112
( 9351 895 80112 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC27D/S208
SO14
(SOT108-1)
SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1Withdrawn / End-of-lifeStandard Marking74HC27D/S208,118
( 9351 945 30118 )
74HCT27D/S71
SO14
(SOT108-1)
SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1Withdrawn / End-of-lifeStandard Marking74HCT27D/S71,118
( 9350 667 40118 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC27D/S208935194530118
74HCT27D/S71935066740118

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC27BQ74HC27BQ,11574HC27BQAlways Pb-free84.96.621.51E811
74HC27D74HC27D,65374HC27Dweek 5, 200484.96.621.51E811
74HC27D74HC27D,65274HC27Dweek 5, 200484.96.621.51E811
74HC27PW74HC27PW,11874HC27PWweek 10, 200584.96.621.51E811
74HC27PW74HC27PW,11274HC27PWweek 10, 200584.96.621.51E811
74HCT27BQ74HCT27BQ,11574HCT27BQAlways Pb-free84.96.621.51E811
74HCT27D74HCT27D,65374HCT27Dweek 5, 200484.96.621.51E811
74HCT27D74HCT27D,65274HCT27Dweek 5, 200484.96.621.51E811
74HCT27PW74HCT27PW,11874HCT27PWweek 10, 200584.96.621.51E811
74HCT27PW74HCT27PW,11274HCT27PWweek 10, 200584.96.621.51E811

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC27D/S20874HC27D/S208,118notAvailableweek 47, 200584.96.621.51E811
74HCT27D/S7174HCT27D/S71,118notAvailableweek 47, 200584.96.621.51E811
Quality and reliability disclaimer

Documentation (16)

File nameTitleTypeDate
74HC_HCT27Triple 3-input NOR gateData sheet2017-03-30
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SOT762-1_471DHVQFN14; Reel sulfur barrier pack, SMD, 7" Q1/T1 standard product orientation Orderable part number ending ,471 or Z Ordering code (12NC) ending 471Packing2016-01-21
SOT762-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 14 terminals; 0.5 mm pitch; 3 mm x 2.5 mm x 1 mm bodyOutline drawing2018-11-14
SOT762-1_115DHVQFN14; Reel pack for SMD, 7"; Q1/T1 product orientationPacking2020-02-13
SOT402-1_623TSSOP14; Reel pack; SMD, 13"; Q1 Standard product orientation; Orderable part number ending, 623 or XP; Ordering code (12NC) ending 623Packing2013-05-15
SOT402-1_653TSSOP14; Reel pack; SMD, 13"; Q1 Standard product orientation; Orderable part number ending, 653 or HL; Ordering code (12NC) ending 653Packing2013-05-15
SOT402-1plastic, thin shrink small outline package; 14 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm bodyOutline drawing2018-10-18
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT402-1_118TSSOP14; Reel pack for SMD, 13"; Q1/T1 product orientationPacking2019-11-29
SOT108-1_431SO14; Reel sulfur barrier pack, SMD, 13" Q1/T1 standard product orientation Orderable part number ending ,431 or Z Ordering code (12NC) ending 431Packing2016-11-24
SOT108-1plastic, small outline package; 14 leads; 1.27 mm pitch; 8.65 mm x 3.9 mm x 1.75 mm bodyOutline drawing2018-10-18
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT108-1_118SO14; Reel pack for SMD, 13"; Q1/T1 product orientationPacking2020-02-14

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