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HEF40192 Datasheet(PDF) 5 Page - NXP Semiconductors |
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HEF40192 Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 9 page January 1995 5 Philips Semiconductors Product specification 4-bit up/down decade counter HEF40192B MSI FUNCTION TABLE MR PL CPU CPD MODE H X X X reset (asyn.) L L X X parallel load L H H count-up L H H count-down Notes 1. H = HIGH state (the more positive voltage) L = LOW state (the less positive voltage) X = state is immaterial = positive-going transition Fig.5 State diagram. Logic equations for terminal count: TCU O 0 O 3 CPU ⋅⋅ = TCD O0 O1 O2 O3 CPD ⋅⋅⋅⋅ = AC CHARACTERISTICS VSS = 0 V; Tamb =25 °C; input transition times ≤ 20 ns VDD V TYPICAL FORMULA FOR P ( µW) Dynamic power 5 550 fi +∑(foCL) × VDD2 where dissipation per 10 2400 fi +∑(foCL) × VDD2 fi = input freq. (MHz) package (P) 15 6500 fi +∑(foCL) × VDD2 fo = output freq. (MHz) CL = load capacitance (pF) ∑ (f oCL) = sum of outputs VDD = supply voltage (V) |
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