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HEF4522BF Datasheet(PDF) 7 Page - NXP Semiconductors |
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HEF4522BF Datasheet(HTML) 7 Page - NXP Semiconductors |
7 / 10 page January 1995 7 Philips Semiconductors Product specification Programmable 4-bit BCD down counter HEF4522B MSI AC CHARACTERISTICS VSS =0V; Tamb =25 °C; CL = 50 pF; input transition times ≤ 20 ns Note 1. In the divide-by-n mode (PL connected to TC), one has to observe the maximum HIGH to LOW propagation delay for CP to TC, before applying the next clock pulse. VDD V SYMBOL MIN. TYP. MAX. Minimum clock 5 80 40 ns see also waveforms Figs 5 and 6 pulse width; CP0 10 tWCPL 40 20 ns LOW 15 30 15 ns Minimum clock 5 80 40 ns pulse width; CP1 10 tWCPH 40 20 ns HIGH 15 30 15 ns Minimum PL 5 100 50 ns pulse width; HIGH 10 tWPLH 40 20 ns 15 32 16 ns Minimum MR 5 130 65 ns pulse width; HIGH 10 tWMRH 50 25 ns 15 40 20 ns Hold time 5 30 5 ns Pn → PL 10 thold 20 5 ns 15 15 5 ns Set-up time 5 30 0 ns Pn → PL 10 tsu 20 0 ns 15 15 0 ns Maximum clock 5 6 12 MHz see note 1 pulse frequency 10 fmax 12 25 MHz PL = LOW 15 16 32 MHz |
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