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HEC4027BP 数据表(PDF) 4 Page - NXP Semiconductors |
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HEC4027BP 数据表(HTML) 4 Page - NXP Semiconductors |
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4 / 5 page ![]() January 1995 4 Philips Semiconductors Product specification Dual JK flip-flop HEF4027B flip-flops CD → O 5 75 150 ns 48 ns + (0,55 ns/pF) CL LOW to HIGH 10 tPLH 35 70 ns 24 ns + (0,23 ns/pF) CL 15 25 50 ns 17 ns + (0,16 ns/pF) CL Output transition times 5 60 120 ns 10 ns + (1,0 ns/pF) CL HIGH to LOW 10 tTHL 30 60 ns 9 ns + (0,42 ns/pF) CL 15 20 40 ns 6 ns + (0,28 ns/pF) CL 5 60 120 ns 10 ns + (1,0 ns/pF) CL LOW to HIGH 10 tTLH 30 60 ns 9 ns + (0,42 ns/pF) CL 15 20 40 ns 6 ns + (0,28 ns/pF) CL Set-up time 5 50 25 ns see also waveforms Figs 4 and 5 J,K → CP 10 tsu 30 10 ns 15 20 5 ns Hold time 5 25 0 ns J,K → CP 10 thold 20 0 ns 15 15 5 ns Minimum clock 5 80 40 ns pulse width; LOW 10 tWCPL 30 15 ns 15 24 12 ns Minimum SD,CD 5 tWSDH, tWCDH 90 45 ns pulse width; HIGH 10 40 20 ns 15 30 15 ns Recovery time 5 tRSD, tRCD 20 −15 ns for SD,CD 10 15 −10 ns 15 10 −5ns Maximum clock 5 4 8 MHz see also waveforms Fig.4 pulse frequency 10 fmax 12 25 MHz J = K = HIGH 15 15 30 MHz VDD V TYPICAL FORMULA FOR P ( µW) Dynamic power 5 900 fi +∑ (foCL) × VDD2 where dissipation per 10 4 500 fi +∑ (foCL) × VDD2 fi = input freq. (MHz) package (P) 15 13 200 fi +∑ (foCL) × VDD2 fo = output freq. (MHz) CL = load capacitance (pF) ∑ (f oCL) = sum of outputs VDD = supply voltage (V) VDD V SYMBOL MIN. TYP. MAX. TYPICAL EXTRAPOLATION FORMULA |
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