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CD54HC4520

High-Speed CMOS Logic Dual Synchronous Counters

Features ?PositiveorNegativeEdgeTriggering ?SynchronousInternalCarryPropagation ?Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads ?WideOperatingTemperatureRange...-5

CD54HC4520

高速 CMOS 邏輯雙路二進(jìn)制加法計(jì)數(shù)器; ? Positive or Negative Edge Triggering\n? Synchronous Internal Carry Propagation\n? Fanout (Over Temperature Range) \n? Standard Outputs...10 LSTTL Loads\n? Bus Driver Outputs...15 LSTTL Loads\n \n? Wide Operating Temperature Range... –55°C to 125°C\n? Balanced Propagation Delay and Transition Times\n? Significant Power Reduction Compared to LSTTL Logic ICs\n? HC Types \n? 2V to 6V Operation\n? High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V\n \n? HCT Types \n? 4.5V to 5.5V Operation\n? Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)\n? CMOS Input Compatibility, Il 1μA at VOL, VOH;

The CD74HC4518 is a dual BCD up-counter. The ?HC4520 and CD74HCT4520 are dual binary up-counters. Each device consists of two independent 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 the negative-going transition of CLOCK. The counters are cleared by high levels on the MASTER RESET lines. The counter can be cascaded in the ripple mode by connecting Q3 to the ENABLE input of the subsequent counter while the CLOCK input of the latter is held low.

CD54HC4520

High-Speed CMOS Logic Dual Synchronous Counters

CD54HC4520

High-Speed CMOS Logic Dual Synchronous Counters

CD54HC4520F

絲?。?a target="_blank" title="Marking" href="/cd54hc4520f/marking.html">CD54HC4520F；Package：CDIP；High-Speed CMOS Logic Dual Synchronous Counters

Features ?PositiveorNegativeEdgeTriggering ?SynchronousInternalCarryPropagation ?Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads ?WideOperatingTemperatureRange...-5

CD54HC4520F.A

絲?。?a target="_blank" title="Marking" href="/cd54hc4520f/marking.html">CD54HC4520F；Package：CDIP；High-Speed CMOS Logic Dual Synchronous Counters

Features ?PositiveorNegativeEdgeTriggering ?SynchronousInternalCarryPropagation ?Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads ?WideOperatingTemperatureRange...-5

CD54HC4520F3A

絲?。?a target="_blank" title="Marking" href="/5962-8995401ea/marking.html">5962-8995401EA；Package：CDIP；High-Speed CMOS Logic Dual Synchronous Counters

Features ?PositiveorNegativeEdgeTriggering ?SynchronousInternalCarryPropagation ?Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads ?WideOperatingTemperatureRange...-5

CD54HC4520F3A.A

絲印：5962-8995401EA；Package：CDIP；High-Speed CMOS Logic Dual Synchronous Counters

Features ?PositiveorNegativeEdgeTriggering ?SynchronousInternalCarryPropagation ?Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads ?WideOperatingTemperatureRange...-5

CD54HC4520F

High-Speed CMOS Logic Dual Synchronous Counters

CD54HC4520F

High-Speed CMOS Logic Dual Synchronous Counters