74AHCT74 datasheet(10/18 Pages) NXP

部品番号	74AHCT74

部品情報	Dual D-type flip-flop with set and reset; positive-edge trigger

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10 / 18 page

74AHC_AHCT74_5

Product data sheet

Rev. 05 — 9 June 2008

10 of 18

NXP Semiconductors

74AHC74; 74AHCT74

Dual D-type ﬂip-ﬂop with set and reset; positive-edge trigger

11. Waveforms

Measurement points are given in Table 8.

The shaded areas indicate when the input is permitted to change for predictable output performance.

VOL and VOH are typical voltage output drop that occur with the output load.

Fig 7.

Clock pulse width, maximum frequency, set-up times, hold times and input to output propagation delays

mna422

th

tsu

th

tPHL

tW

tPLH

tsu

1/fmax

VM

VI

GND

VI

GND

nCP input

nD input

VOH

VOL

nQ output

VOH

VOL

nQ output

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