Register once, drag and drop ECAD models into your CAD tool and speed up your design.

Click here for more information

74HCT4520D

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.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
74HCT4520D 74HCT4520D,118 933715380118 SOT109-1 Order product
74HCT4520D 74HCT4520D,112 933715380112 SOT109-1 Order product

Features and benefits

  • Complies with JEDEC standard no. 7A
  • Input levels:
    • For 74HC4520: CMOS level
    • For 74HCT4520: TTL level
  • 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

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
74HCT4520DProduction4.5 - 5.5± 4TTL24low-40~125621.019.7SO16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
74HCT4520D74HCT4520D,118
( 9337 153 80118 )
Active74HCT4520D
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1
74HCT4520D,112
( 9337 153 80112 )
Active74HCT4520DBulk Pack

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
74HCT4520D74HCT4520D,11874HCT4520D84.96.621.51E811
74HCT4520D74HCT4520D,11274HCT4520D84.96.621.51E811
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
74HC_HCT4520Dual 4-bit synchronous binary counterData sheet2019-02-14
AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
74HCT4520D74HCT4520D,118933715380118Reel 13" Q1/T1Order product
74HCT4520D74HCT4520D,112933715380112Bulk PackOrder product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.