74AHC_AHCT1G79_5

© NXP B.V. 2007. All rights reserved.

Product data sheet

Rev. 05 — 2 July 2007

7 of 12

NXP Semiconductors

74AHC1G79; 74AHCT1G79

Single D-type flip-flop; positive-edge trigger

12. Waveforms

Measurement points are given in Table 9.

Fig 5.

Clock (CP) to output (Q) propagation delay times, clock pulse width, D to set-up times, the CP to D hold

times and maximum clock pulse frequency

mna647

GND

GND

CP input

D input

Q output

Table 9.

Measurement points

Type

Inputs

Output

74AHC1G79

0.5

× V

CC

0.5

× V

CC

74AHCT1G79

GND to 3.0 V

1.5 V

0.5

× V

CC

Test data is given in Table 8. Definitions for test circuit:

Fig 6.

Load circuitry for switching times

mna101

RT

CL

PULSE

GENERATOR

DUT