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HEF4520BT

Dual binary counter

The HEF4520B is a dual 4-bit internally synchronous binary counter with two clock inputs (nCP0 and nCP1), buffered outputs from all four bit positions (nQ0 to nQ3) and an asynchronous master reset input (nMR). The counter advances on either the LOW-to-HIGH transition of nCP0 if nCP1 is HIGH or the HIGH-to-LOW transition of nCP1 if nCP0 is LOW. Either nCP0 or nCP1 may be used as the clock input to the counter and 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. This enables the use of current limiting resistors to interface inputs to voltages in excess of VDD.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
HEF4520BT HEF4520BT,653 933373250653 SOT109-1 Order product

Features and benefits

  • Tolerant of slow clock rise and fall times
  • Fully static operation
  • 5 V, 10 V, and 15 V parametric ratings
  • Wide supply voltage range from 3.0 V to 15.0 V
  • CMOS low power dissipation
  • High noise immunity
  • Standardized symmetrical output characteristics
  • Complies with JEDEC standard JESD 13-B
  • ESD protection:
    • HBM JESD22-A114F exceeds 2000 V
    • MM JESD22-A115-B exceeds 200 V
  • Specified from -40 °C to +85 °C

Applications

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
HEF4520BTProduction4.5 - 15.5± 2.4CMOS15medium-40~85908.749.5SO16

Package

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
HEF4520BTHEF4520BT,653
( 9333 732 50653 )
ActiveHEF4520BT
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 CECC

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

Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
HEF4520BTHEF4520BT,652
( 9333 732 50652 )
Withdrawn / End-of-lifeHEF4520BT
SO16
(SOT109-1)
SOT109-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Bulk Pack, CECC

Discontinuation information

Type numberOrderable part numberOrdering codeLast time buy dateLast time delivery dateReplacement productStatusComments
HEF4520BTHEF4520BT,6529333732506522021-12-312022-06-30HEF4520BTVersion withdrawal

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
HEF4520BTHEF4520BT,653HEF4520BT11

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

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
HEF4520BTHEF4520BT,652HEF4520BT11
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
HEF4520BDual binary counterData sheet2022-03-01
AN11051Pin FMEA HEF4000 familyApplication note2019-01-09
HEF4520BT_Nexperia_Product_ReliabilityHEF4520BT Nexperia Product ReliabilityQuality document2022-05-04
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08

Support

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Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingPacking quantityBuy online
HEF4520BTHEF4520BT,653933373250653Reel 13" Q1/T1 CECC- Order 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.