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74HC390; 74HCT390

Dual decade ripple counter

The 74HC390; 74HCT390 is a dual 4-bit decade ripple counter divided into four separately clocked sections. The counters have two divide-by-2 sections and two divide-by-5 sections. These sections share an asynchronous master reset input (nMR) and can be used in a BCD decade or bi-quinary configuration. If master reset inputs (1MR and 2MR) are used to simultaneously clear all 8 bits of the counter, a number of counting configurations are possible within one package. The separate clocks (nCP0 and nCP1) of each section allow ripple counter or frequency division applications of divide-by-2, 4, 5, 10, 20, 25, 50 or 100. Each section is triggered by the HIGH-to-LOW transition of the clock inputs (nCP0 and nCP1). For BCD decade operation, the nQ0 output is connected to the nCP1 input of the divide-by-5 section. For bi-quinary decade operation, the nQ3 output is connected to the nCP0 input and nQ0 becomes the decade output. A HIGH on the nMR input overrides the clocks and sets the four outputs LOW. This device features reduced input threshold levels to allow interfacing to TTL logic levels. Inputs also include clamp diodes, this enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Input levels:
    • For 74HC390: CMOS level
    • For 74HCT390: TTL level
  • Two BCD decade or bi-quinary counters
  • One device can be configured to divide-by-2, 4, 5, 10, 20, 25, 50 or 100
  • Two master reset inputs to clear each decade counter individually
  • Supply voltage range from 4.5 V to 5.5 V
  • High noise immunity
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
  • Complies with JEDEC standard JESD7A (4.5 V to 5.5 V)
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

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
74HC390DProduction2.0 - 6.0± 5.2CMOS1460low-40~125772.535SO16
74HC390PWProduction2.0 - 6.0± 5.2CMOS1460low-40~1251111.338.8TSSOP16
74HCT390DProduction4.5 - 5.5± 4TTL1855low-40~125762.534.7SO16
74HCT390PWProduction----------TSSOP16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC390D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HC390D74HC390D,653
( 9337 147 20653 )
74HC390PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1ActiveHC39074HC390PW,118
( 9351 890 60118 )
74HCT390D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECCActive74HCT390D74HCT390D,653
( 9337 152 00653 )
74HCT390PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Reel 13" Q1/T1Active4HCT39074HCT390PWHL
( 9356 912 09118 )

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))
74HC390D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECCDiscontinued / End-of-life74HC390D74HC390D,652
( 9337 147 20652 )
74HC390PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
Bulk PackDiscontinued / End-of-lifeHC39074HC390PW,112
( 9351 890 60112 )
74HCT390D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECCDiscontinued / End-of-life74HCT390D74HCT390D,652
( 9337 152 00652 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC390D9337147206522021-12-312022-06-3074HC390D
    74HC390PW9351890601122021-12-312022-06-3074HC390PW
      74HCT390D9337152006522021-12-312022-06-3074HCT390D

        Quality, reliability & chemical content

        Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
        74HC390D74HC390D,65374HC390Dweek 6, 200439.31.37.69E811
        74HC390PW74HC390PW,11874HC390PWweek 10, 200539.31.37.69E811
        74HCT390D74HCT390D,65374HCT390Dweek 6, 200439.31.37.69E811
        74HCT390PW74HCT390PWHL74HCT390PW11

        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
        74HC390D74HC390D,65274HC390Dweek 6, 200439.31.37.69E811
        74HC390PW74HC390PW,11274HC390PWweek 10, 200539.31.37.69E811
        74HCT390D74HCT390D,65274HCT390Dweek 6, 200439.31.37.69E811
        Quality and reliability disclaimer

        Documentation (9)

        File nameTitleTypeDate
        74HC_HCT390Dual decade ripple counterData sheet2021-10-18
        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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