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74HC173; 74HCT173

Quad D-type flip-flop; positive-edge trigger; 3-state

The 74HC173; 74HCT173 is a quad positive-edge triggered D-type flip-flop. The device features clock (CP), master reset (MR), two input enable (E1, E2) and two output enable (OE1, OE2) inputs. When the input enables are LOW, the outputs Qn will 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 HIGH on either input enable will cause the device to go into a hold mode, outputs hold their previous state independently of clock and data inputs. A HIGH on MR forces the outputs LOW independently of clock and data inputs. A HIGH on either output enable pin causes the outputs to assume a high-impedance OFF-state. Operation of the output enable inputs does not affect the state of the flip-flops. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Complies with JEDEC standard no. 7A
  • Input levels:
    • For 74HC173: CMOS level
    • For 74HCT173: TTL level
  • Gated input enable for hold (do nothing) mode
  • Gated output enable control mode
  • Edge-triggered D-type register
  • Asynchronous master reset
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and -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
74HC173DProduction2.0 - 6.0CMOS± 7.81788low-40~125721.030SO16
74HC173PWProduction2.0 - 6.0CMOS± 7.81788low-40~1251071.033.8TSSOP16
74HCT173DProduction4.5 - 5.5TTL± 61788low-40~125721.030SO16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC173D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HC173D74HC173D,653
( 9337 145 60653 )
74HC173PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC17374HC173PW,118
( 9351 895 50118 )
74HCT173D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HCT173D74HCT173D,653
( 9337 150 40653 )

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))
74HC173D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECCDiscontinued / End-of-life74HC173D74HC173D,652
( 9337 145 60652 )
74HC173PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeHC17374HC173PW,112
( 9351 895 50112 )
74HCT173D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECCDiscontinued / End-of-life74HCT173D74HCT173D,652
( 9337 150 40652 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC173D933714560652
74HC173PW935189550112
74HCT173D933715040652

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC173D74HC173D,65374HC173Dweek 12, 200539.31.37.69E811
74HC173PW74HC173PW,11874HC173PWweek 10, 200539.31.37.69E811
74HCT173D74HCT173D,65374HCT173Dweek 30, 200439.31.37.69E811

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
74HC173D74HC173D,65274HC173Dweek 12, 200539.31.37.69E811
74HC173PW74HC173PW,11274HC173PWweek 10, 200539.31.37.69E811
74HCT173D74HCT173D,65274HCT173Dweek 30, 200439.31.37.69E811
Quality and reliability disclaimer

Documentation (9)

File nameTitleTypeDate
74HC_HCT173Quad D-type flip-flop; positive-edge trigger; 3-stateData sheet2021-01-25
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2021-01-06
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.1 mm bodyPackage information2020-04-21

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