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

The 74HC273-Q100; 74HCT273-Q100 is an octal positive-edge triggered D‑type flip‑flop. The device features clock (CP) and master reset (MR) inputs. The outputs Qn assume the state of their corresponding Dn inputs that meet the set-up and hold time requirements on the LOW‑to‑HIGH clock (CP) transition. A LOW on MR forces the outputs LOW independently of clock and data inputs. Inputs include clamp diodes which enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.


  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)
    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
  • Input levels:
    • For 74HC273-Q100: CMOS level
    • For 74HCT273-Q100: TTL level
  • Common clock and master reset
  • Eight positive edge-triggered D-type flip-flops
  • Complies with JEDEC standard no. 7A
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Multiple package options


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
74HC273BQ-Q100Production2.0 - 6.0CMOS± 5.215122low-40~125789.450DHVQFN20
74HC273D-Q100Production2.0 - 6.0CMOS± 5.215122low-40~1258527.561SO20
74HC273PW-Q100Production2.0 - 6.0CMOS± 5.215122low-40~1251014.645TSSOP20
74HCT273BQ-Q100Production4.5 - 5.5TTL± 41536low-40~125789.450DHVQFN20
74HCT273D-Q100Production4.5 - 5.5TTL± 41536low-40~1258527.561SO20
74HCT273PW-Q100Production4.5 - 5.5TTL± 41536low-40~1251014.645TSSOP20


Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT764-1Reel 7" Q1/T1ActiveHC273BQ74HC273BQ-Q100X
( 9353 014 57115 )
SOT163-1Reel 13" Q1/T1Active74HC273D74HC273D-Q100J
( 9353 014 55118 )
Reel 13" Q1/T1ActiveHC27374HC273PW-Q100J
( 9353 014 56118 )
SOT764-1Reel 7" Q1/T1ActiveHCT273BQ74HCT273BQ-Q100X
( 9353 014 61115 )
SOT163-1Reel 13" Q1/T1Active74HCT273D74HCT273D-Q100J
( 9353 014 58118 )
Reel 13" Q1/T1ActiveHCT27374HCT273PW-Q100J
( 9353 014 59118 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRMSLMSL leadfree
74HC273BQ-Q10074HC273BQ-Q100X74HC273BQ-Q100Always Pb-free84.911
74HC273D-Q10074HC273D-Q100J74HC273D-Q100Always Pb-free84.911
74HC273PW-Q10074HC273PW-Q100J74HC273PW-Q100Always Pb-free84.911
74HCT273BQ-Q10074HCT273BQ-Q100X74HCT273BQ-Q100Always Pb-free84.911
74HCT273D-Q10074HCT273D-Q100J74HCT273D-Q100Always Pb-free84.911
74HCT273PW-Q10074HCT273PW-Q100J74HCT273PW-Q100Always Pb-free84.911
Quality and reliability disclaimer

Documentation (14)

File nameTitleTypeDate
74HC_HCT273_Q100Octal D-type flip-flop with reset; positive-edge triggerData sheet2017-05-03
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
nexperia_selection_guide_2019_201901Selection guide 2019. Discretes, Logic and MOSFETsSelection guide2018-12-12
hchc Spice modelSPICE model2013-05-06
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SOT764-1_115DHVQFN20; Reel pack; SMD, 7" Q1/T1 Standard product orientation Orderable part number ending ,115 or X Ordering code (12NC) ending 115Packing2013-04-23
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 bodyOutline drawing2018-11-14
SOT360-1_118TSSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packing2013-04-15
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 bodyOutline drawing2018-10-18
SOT163-1_115Tape reel SMD; standard product orientation 12NC ending 115Packing2013-04-25
SOT163-1_118SO20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118Packing2013-04-15
SOT163-1_518SO20; Reel dry pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,518 or Y Ordering code (12NC) ending 518Packing2014-12-16
SOT163-1plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm bodyOutline drawing2018-10-18


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File nameTitleTypeDate
hchc Spice modelSPICE model2013-05-06


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