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74HC390 Datasheet(PDF) 6 Page - NXP Semiconductors |
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74HC390 Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 7 page December 1990 6 Philips Semiconductors Product specification Dual decade ripple counter 74HC/HCT390 DC CHARACTERISTICS FOR 74HCT For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Output capability: standard ICC category: MSI Note to HCT types The value of additional quiescent supply current ( ∆ICC) for a unit load of 1 is given in the family specifications. To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below. AC CHARACTERISTICS FOR 74HCT GND = 0 V; tr =tf = 6 ns; CL =50pF INPUT UNIT LOAD COEFFICIENT nCP0 nCP1, nMR 0.45 0.60 SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITIONS 74HCT VCC (V) WAVEFORMS +25 −40 to +85 −40 to +125 min. typ. max. min. max. min. max. tPHL/ tPLH propagation delay nCP0 to nQ0 21 34 43 51 ns 4.5 Fig.6 tPHL/ tPLH propagation delay nCP1 to nQ1 22 38 48 57 ns 4.5 Fig.6 tPHL/ tPLH propagation delay nCP1 to nQ2 30 51 64 77 ns 4.5 Fig.6 tPHL/ tPLH propagation delay nCP1 to nQ3 22 38 48 57 ns 4.5 Fig.6 tPHL propagation delay nMR to nQn 21 36 45 54 ns 4.5 Fig.7 tTHL/ tTLH output transition time 7 15 19 22 ns 4.5 Fig.6 tW clock pulse width nCP0, nCP1 18 8 23 27 ns 4.5 Fig.6 tW master reset pulse width HIGH 17 10 21 26 ns 4.5 Fig.7 trem removal time nMR to nCPn 15 8 19 22 ns 4.5 Fig.7 fmax maximum clock pulse frequency nCP0, nCP1 27 55 22 18 MHz 4.5 Fig.6 |
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