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74AHC273; 74AHCT273

Octal D-type flip-flop with reset; positive-edge trigger

The 74AHC273; 74AHCT273 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard No. 7-A.

The 74AHC273; 74AHCT273 has eight edge-triggered, D-type flip-flops with individual D inputs and Q outputs. The common clock (CP) and master reset (MR) inputs, load and reset (clear) all flip-flops simultaneously. The state of each D input, one set-up time before the LOW-to-HIGH clock transition, is transferred to the corresponding output (Qn) of the flip-flop. All outputs will be forced LOW, independent of clock or data inputs, by a LOW on the MR input.

The device is useful for applications where only the true output is required and the clock and master reset are common to all storage elements.

Features and benefits

  • Balanced propagation delays
  • All inputs have Schmitt-trigger actions
  • Inputs accept voltages higher than VCC
  • Ideal buffer for MOS microcontroller or memory
  • Common clock and master reset
  • Input levels:
    • For 74AHC273: CMOS level
    • For 74AHCT273: TTL level
  • ESD protection:
    • HBM JESD22-A114E exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
    • CDM JESD22-C101C exceeds 1000 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)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74AHC273BQProduction2.0 - 5.5CMOS± 84.2165low-40~125789.150DHVQFN20
74AHC273DProduction2.0 - 5.5CMOS± 84.2165low-40~1258527.361SO20
74AHC273PWProduction2.0 - 5.5CMOS± 84.2165low-40~1251004.644.7TSSOP20
74AHCT273BQProduction4.5 - 5.5TTL± 84.0120low-40~125789.150DHVQFN20
74AHCT273DProduction4.5 - 5.5TTL± 84.0120low-40~1258527.361SO20
74AHCT273PWProduction4.5 - 5.5TTL± 84.0120low-40~1251004.644.7TSSOP20

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74AHC273BQ
DHVQFN20
(SOT764-1)
SOT764-1Reel 7” Q1/T1 or Q2/T3ActiveAHC27374AHC273BQ,115
( 9352 730 49115 )
74AHC273D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Reel 13" Q1/T1Active74AHC273D74AHC273D,118
( 9352 635 92118 )
74AHC273PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveAHC27374AHC273PW,118
( 9352 635 93118 )
74AHCT273BQ
DHVQFN20
(SOT764-1)
SOT764-1Reel 7” Q1/T1 or Q2/T3ActiveAHCT27374AHCT273BQ,115
( 9352 737 35115 )
74AHCT273D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Reel 13" Q1/T1Active74AHCT273D74AHCT273D,118
( 9352 635 90118 )
74AHCT273PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveAHCT27374AHCT273PW,118
( 9352 635 91118 )

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

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74AHC273D
SO20
(SOT163-1)
SOT163-1WAVE_BG-BD-1
Bulk PackDiscontinued / End-of-life74AHC273D74AHC273D,112
( 9352 635 92112 )
74AHC273PW
TSSOP20
(SOT360-1)
SOT360-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeAHC27374AHC273PW,112
( 9352 635 93112 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74AHC273D935263592112
74AHC273PW935263593112
74AHCT273D9352635901122018-12-312019-06-3074AHCT273D
    74AHCT273PW9352635911122018-12-312019-06-3074AHCT273PW

      Quality, reliability & chemical content

      Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
      74AHC273BQ74AHC273BQ,11574AHC273BQAlways Pb-free29.90.91.11E911
      74AHC273D74AHC273D,11874AHC273Dweek 30, 200429.90.91.11E911
      74AHC273PW74AHC273PW,11874AHC273PWweek 5, 200529.90.91.11E911
      74AHCT273BQ74AHCT273BQ,11574AHCT273BQAlways Pb-free29.90.91.11E911
      74AHCT273D74AHCT273D,11874AHCT273Dweek 30, 200429.90.91.11E911
      74AHCT273PW74AHCT273PW,11874AHCT273PWweek 7, 200529.90.91.11E911

      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
      74AHC273D74AHC273D,11274AHC273Dweek 30, 200429.90.91.11E911
      74AHC273PW74AHC273PW,11274AHC273PWweek 5, 200529.90.91.11E911
      Quality and reliability disclaimer

      Documentation (8)

      File nameTitleTypeDate
      74AHC_AHCT273Octal D-type flip-flop with reset; positive-edge triggerData sheet2020-09-22
      ahct273ahct273 IBIS modelIBIS model2013-04-07
      ahc273ahc273 IBIS modelIBIS model2013-04-07
      SOT764-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 4.5 mm x 2.5 mm x 1 mm bodyPackage information2021-08-17
      SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
      SOT360-1plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21
      SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm bodyPackage information2020-04-21
      WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08

      Support

      If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

      Models

      File nameTitleTypeDate
      ahct273ahct273 IBIS modelIBIS model2013-04-07
      ahc273ahc273 IBIS modelIBIS model2013-04-07

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