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74HCT273D 데이터시트(PDF) 6 Page - NXP Semiconductors |
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74HCT273D 데이터시트(HTML) 6 Page - NXP Semiconductors |
6 / 8 page September 1993 6 Philips Semiconductors Product specification Octal D-type flip-flop with reset; positive-edge trigger 74HC/HCT273 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 = 50 pF INPUT UNIT LOAD COEFFICIENT MR CP Dn 1.00 1.75 0.15 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 CP to Qn 16 30 38 45 ns 4.5 Fig.6 tPHL propagation delay MR to Qn 23 34 43 51 ns 4.5 Fig.7 tTHL/ tTLH output transition time 7 15 19 22 ns 4.5 Fig.6 tW clock pulse width HIGH or LOW 16 9 20 24 ns 4.5 Fig.6 tW master reset pulse width LOW 16 8 20 24 ns 4.5 Fig.7 trem removal time MR to CP 10 −2 13 15 ns 4.5 Fig.7 tsu set-up time Dn to CP 12 5 15 18 ns 4.5 Fig.8 th hold time Dn to CP 3 −4 3 3 ns 4.5 Fig.8 fmax maximum clock pulse frequency 30 56 24 20 MHz 4.5 Fig.6 |
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