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74HCT4518 Datasheet(PDF) 5 Page - NXP Semiconductors |
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74HCT4518 Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 7 page December 1990 5 Philips Semiconductors Product specification Dual synchronous BCD counter 74HC/HCT4518 DC CHARACTERISTICS FOR 74HC For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: standard ICC category: MSI AC CHARACTERISTICS FOR 74HC GND = 0 V; tr =tf = 6 ns; CL = 50 pF SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HC VCC (V) WAVEFORMS +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. tPHL/ tPLH propagation delay nCP0, nCP1 to nQn 66 24 19 210 42 36 265 53 45 315 63 59 ns 2.0 4.5 6.0 Fig.9 tPHL propagation delay nMR to nQn 44 16 13 150 30 26 190 38 33 225 45 38 ns 2.0 4.5 6.0 Fig.8 tTHL/ tTLH output transition time 19 7 6 75 15 13 95 19 16 110 22 19 ns 2.0 4.5 6.0 Fig.9 tW clock pulse width HIGH or LOW 80 16 14 25 9 7 100 20 17 120 24 20 ns 2.0 4.5 6.0 Fig.8 tW master reset pulse width HIGH 120 24 20 39 14 11 150 30 26 180 36 31 ns 2.0 4.5 6.0 Fig.8 trem removal time nMR to nCP0, nCP1 0 0 0 −22 −8 −6 0 0 0 0 0 0 ns 2.0 4.5 6.0 Fig.8 tsu set-up time nCP1 to nCP0; nCP0 to nCP1 80 16 14 22 8 6 100 20 17 120 24 20 ns 2.0 4.5 6.0 Fig.7 fmax maximum clock pulse frequency nCP0, nCP1 6.0 30 35 18 55 66 4.8 24 28 4.0 20 24 MHz 2.0 4.5 6.0 Fig.8 |
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