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HEF4518B Datasheet(PDF) 6 Page - Nexperia B.V. All rights reserved |
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HEF4518B Datasheet(HTML) 6 Page - Nexperia B.V. All rights reserved |
6 / 13 page ![]() Nexperia HEF4518B Dual BCD counter 11. Dynamic characteristics Table 7. Dynamic characteristics VSS = 0 V; Tamb = 25 °C unless otherwise specified; for test circuit see Fig. 6. Symbol Parameter Conditions VDD Extrapolation formula[1] Min Typ Max Unit 5 V 93 ns + (0.55 ns/pF)CL - 120 240 ns 10 V 44 ns + (0.23 ns/pF)CL - 55 110 ns nCP0, nCP1 to nQn; see Fig. 5 15 V 32 ns + (0.16 ns/pF)CL - 40 80 ns 5 V 48 ns + (0.55 ns/pF)CL - 75 150 ns 10 V 24 ns + (0.23 ns/pF)CL - 35 70 ns tPHL HIGH to LOW propagation delay nMR to nQn; see Fig. 5 15 V 17 ns + (0.16 ns/pF)CL - 25 50 ns 5 V 93 ns + (0.55 ns/pF)CL - 120 240 ns 10 V 44 ns + (0.23 ns/pF)CL - 55 110 ns tPLH LOW to HIGH propagation delay nCP0, nCP1 to nQn; see Fig. 5 15 V 32 ns + (0.16 ns/pF)CL - 40 80 ns 5 V 10 ns + (1.00 ns/pF)CL - 60 120 ns 10 V 9 ns + (0.42 ns/pF)CL - 30 60 ns tt transition time nQn; see Fig. 5 15 V 6 ns + (0.28 ns/pF)CL - 20 40 ns 5 V 60 30 - ns 10 V 30 15 - ns nCP0 input LOW; minimum width; see Fig. 5 15 V 20 10 - ns 5 V 60 30 - ns 10 V 30 15 - ns nCP1 input HIGH; minimum width see Fig. 5 15 V 20 10 - ns 5 V 30 15 - ns 10 V 20 10 - ns tW pulse width nMR input HIGH; minimum width; see Fig. 5 15 V 16 8 - ns 5 V 50 25 - ns 10 V 30 15 - ns trec recovery time nMR input; see Fig. 5 15 V 20 10 - ns 5 V 50 25 - ns 10 V 30 15 - ns nCP0 to nCP1; see Fig. 5 15 V 20 10 - ns 5 V 50 25 - ns 10 V 30 15 - ns tsu set-up time nCP1 to nCP0; see Fig. 5 15 V 20 10 - ns 5 V 8 16 - MHz 10 V 15 30 - MHz fmax maximum frequency nCP0, nCP1; see Fig. 5 15 V 20 40 - MHz [1] The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF). HEF4518B All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 9 — 3 December 2021 6 / 13 |
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