Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC MOSFETs

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

74HC4520; 74HCT4520

Dual 4-bit synchronous binary counter

The 74HC4520; 74HCT4520 are dual 4-bit internally synchronous binary counters with two clock inputs (nCP0 and nCP1). They have buffered outputs from all 4 bit positions (nQ0 to nQ3) and an asynchronous master reset input (nMR). The counter advances on the LOW-to-HIGH transition of nCP0 when nCP1 is HIGH. It also advances on the HIGH-to-LOW transition of nCP1 when nCP0 is LOW. Either nCP0 or nCP1 may be used as the clock input to the counter. The other clock input may be used as a clock enable input. A HIGH on nMR, resets the counter (nQ0 to nQ3 = LOW) independent of nCP0 and nCP1. Inputs include clamp diodes. It 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 74HC4520: CMOS level

    • For 74HCT4520: TTL level

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

  • Specified from -40 °C to +85 °C and -40 °C to +125 °C

Applications

  • Multistage synchronous counting

  • Multistage asynchronous counting

  • Frequency dividers

Parametrics

Type numberProduct statusVCC (V)Output drive capability (mA)Logic switching levelstpd (ns)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
74HC4520DProduction2.0 - 6.0± 5.2CMOS24low-40~125651.022SO16
74HC4520PWProduction2.0 - 6.0± 5.2CMOS24low-40~125981.023.6TSSOP16
74HCT4520DProduction4.5 - 5.5± 4TTL24low-40~125621.019.7SO16

Package

Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
74HC4520D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_118Active74HC4520D74HC4520D,118
( 9337 149 00118 )
74HC4520PW
TSSOP16
(SOT403-1)
SOT403-1SSOP-TSSOP-VSO-WAVE
SOT403-1_118ActiveHC452074HC4520PW,118
( 9351 891 30118 )
74HCT4520D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_118Active74HCT4520D74HCT4520D,118
( 9337 153 80118 )

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))
74HC4520D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT109-1_112Withdrawn / End-of-life74HC4520D74HC4520D,112
( 9337 149 00112 )

Discontinuation information

Type numberOrderable part number, (Ordering code (12NC))Last time buy dateLast time delivery dateReplacement productStatusComments
74HC4520D9337149001122021-12-312022-06-3074HC4520D
    74HC4520PW9351891301122021-12-312022-06-3074HC4520PW
      74HCT4520D9337153801122021-12-312022-06-3074HCT4520D

        Environmental information

        Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
        74HC4520D74HC4520D,11874HC4520Dweek 4, 2004
        74HC4520PW74HC4520PW,11874HC4520PWweek 10, 2005
        74HCT4520D74HCT4520D,11874HCT4520Dweek 4, 2004

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

        Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
        74HC4520D74HC4520D,11274HC4520Dweek 4, 2004
        Quality and reliability disclaimer

        Documentation (9)

        File nameTitleTypeDate
        74HC_HCT4520Dual 4-bit synchronous binary counterData sheet2024-04-02
        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
        WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
        SOT109-1plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm bodyPackage information2023-11-07
        SOT403-1plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm bodyPackage information2023-11-08
        SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08

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