74HC4017; 74HCT4017

Johnson decade counter with 10 decoded outputs

The 74HC4017; 74HCT4017 is a 5-stage Johnson decade counter with 10 decoded outputs (Q0 to Q9), an output from the most significant flip-flop (Q5-9), two clock inputs (CP0 and CP1) and an overriding asynchronous master reset input (MR). The counter is advanced by either a LOW-to-HIGH transition at CP0 while CP1 is LOW or a HIGH-to-LOW transition at CP1 while CP0 is HIGH. When cascading counters, the Q5-9 output, which is LOW while the counter is in states 5, 6, 7, 8 and 9, can be used to drive the CP0 input of the next counter. A HIGH on MR resets the counter to zero (Q0 = Q5-9 = HIGH; Q1 to Q9 = LOW) independent of the clock inputs (CP0 and CP1). Automatic code correction of the counter is provided by an internal circuit: following any illegal code the counter returns to a proper counting mode within 11 clock pulses. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Wide supply voltage range from 2.0 V to 6.0 V
  • CMOS low power dissipation
  • High noise immunity
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
  • Complies with JEDEC standards:
    • JESD8C (2.7 V to 3.6 V)
    • JESD7A (2.0 V to 6.0 V)
  • Input levels:
    • For 74HC4017: CMOS level
    • For 74HCT4017: 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


Type numberProduct statusVCC (V)Output drive capability (mA)Logic switching levelstpd (ns)fmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC4017BQProduction2.0 - 6.0± 5.2CMOS1877low-40~1259011.859DHVQFN16
74HC4017DProduction2.0 - 6.0± 5.2CMOS1877low-40~125908.349SO16
74HC4017PWProduction2.0 - 6.0± 5.2CMOS1877low-40~1251223.951.5TSSOP16
74HCT4017BQProduction4.5 - 5.5± 4TTL2167low-40~1259011.859DHVQFN16
74HCT4017DProduction4.5 - 5.5± 4TTL2167low-40~125898.348.6SO16


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOT763-1Reel 7” Q1/T1 or Q2/T3ActiveHC401774HC4017BQ,115
( 9352 853 57115 )
Reel 13" Q1/T1 CECCActive74HC4017D74HC4017D,653
( 9337 147 60653 )
Bulk Pack, CECCActive74HC4017D74HC4017D,652
( 9337 147 60652 )
Reel 13" Q1/T1ActiveHC401774HC4017PW,118
( 9351 890 80118 )
Bulk PackActiveHC401774HC4017PW,112
( 9351 890 80112 )
SOT763-1Reel 7” Q1/T1 or Q2/T3ActiveHT401774HCT4017BQ,115
( 9352 853 58115 )
Reel 13" Q1/T1 CECCActive74HCT4017D74HCT4017D,653
( 9337 152 40653 )
Bulk Pack, CECCActive74HCT4017D74HCT4017D,652
( 9337 152 40652 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
74HC4017BQ74HC4017BQ,11574HC4017BQAlways Pb-free84.96.621.51E811
74HC4017D74HC4017D,65374HC4017Dweek 30, 200484.96.621.51E811
74HC4017D74HC4017D,65274HC4017Dweek 30, 200484.96.621.51E811
74HC4017PW74HC4017PW,11874HC4017PWweek 10, 200584.96.621.51E811
74HC4017PW74HC4017PW,11274HC4017PWweek 10, 200584.96.621.51E811
74HCT4017BQ74HCT4017BQ,11574HCT4017BQAlways Pb-free84.96.621.51E811
74HCT4017D74HCT4017D,65374HCT4017Dweek 4, 200484.96.621.51E811
74HCT4017D74HCT4017D,65274HCT4017Dweek 4, 200484.96.621.51E811
Quality and reliability disclaimer

Documentation (9)

File nameTitleTypeDate
74HC_HCT4017Johnson decade counter with 10 decoded outputsData sheet2021-05-10
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SOT763-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm bodyPackage information2020-04-21
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
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
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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