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MR82C82B Datasheet(PDF) 3 Page - Intersil Corporation |
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MR82C82B Datasheet(HTML) 3 Page - Intersil Corporation |
3 / 7 page 4-276 Application Information Decoupling Capacitors The transient current required to charge and discharge the 300pF load capacitance specified in the 82C82 data sheet is determined by: Assuming that all outputs change state at the same time and that dv/dt is constant; where tR = 20ns, VCC = 5.0V, CL = 300pF on each of eight outputs. This current spike may cause a large negative voltage spike on VCC, which could cause improper operation of the device. To filter out this noise, it is recommended that a 0.1 µF ceramic disc decoupling capacitor be placed between VCC and GND at each device, with placement being as near to the device as possible. IC L = (dv/dt) (EQ. 1) IC L = (EQ. 2) V CC x 80% () tR/tF ----------------------------------- (EQ. 3) I = 8 x 300 x 10 -12 ()x (5.0V x 0.8)/ 20 x 10 9 – () = 480mA (EQ. 4) FIGURE 18. SYSTEM EFFECTS OF GATED INPUTS ADDRESS ADDRESS ALE MULTIPLEXED ICC BUS P P N N STB DATA IN INTERNAL DATA VCC P N VCC 82C82 |
Similar Part No. - MR82C82B |
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Similar Description - MR82C82B |
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