CD4518, CD4520

Cinque Terre
  • Category: CMOS 4000 series
  • Sub Category: Counters
  • Manufacturer: intersil

    Short Description

    CMOS Dual Up Counters

    General Description

    CD4518BMS Dual BCD Up Counter and CD4520BMS Dual Binary Up Counter each consist of two identical, internally synchronous 4-stage counters. The counter stages are D-type flip-flops having interchangeable CLOCK and ENABLE lines for incrementing on either the positive-going or negative-going transition. For single unit operation the ENABLE input is maintained high and the counter advances on each positive-going transition of the CLOCK. The counters are cleared by high levels on their RESET lines.</br></br> The counter can be cascaded in the ripple mode by connecting Q4 to the enable input of the subsequent counter while the CLOCK input of the latter is held low.</br></br>

    Features

    • High Voltage Types (20V Rating)</br> • CD4518BMS Dual BCD Up Counter</br> • CD4520BMS Dual Binary Up Counter</br> • Medium Speed Operation</br> - 6MHz Typical Clock Frequency at 10V</br> • Positive or Negative Edge Triggering</br> • Synchronous Internal Carry Propagation</br> • 100% Tested for Quiescent Current at 20V</br> • 5V, 10V and 15V Parametric Ratings</br> • Maximum Input Current of 1µA at 18V Over Full Package Temperature Range; 100nA at 18V and +25C</br> • Noise Margin (Over Full Package/Temperature Range)</br> - 1V at VDD = 5V</br> - 2V at VDD = 10V</br> - 2.5V at VDD = 15V</br> • Standardized Symmetrical Output Characteristics</br> • Meets All Requirements of JEDEC Tentative Standard No. 13B, “Standard Specifications for Description of ‘B’ Series CMOS Devices”

    Applications

    • Multistage Synchronous Counting</br> • Multistage Ripple Counting</br> • Frequency Dividers

    Absolute Maximum Rating

    > DC Supply Voltage Range, (VDD) : -0.5V to +20V</br> (Voltage Referenced to VSS Terminals)</br> > Input Voltage Range, All Inputs :-0.5V to VDD +0.5V</br> > DC Input Current, Any One Input : ±10mA</br> > Operating Temperature Range: -55C to +125C</br> - Package Types D, F, K, H > Storage Temperature Range (TSTG): -65C to +150C</br> > Lead Temperature (During Soldering) : +265C

    Datasheet Link

    http://pdf.datasheetcatalog.com/datasheets/120/109587_DS.pdf