Nexperia

74LVC1G79

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

11. Dynamic characteristics

Table 8. Dynamic characteristics

Voltages are referenced to GND (ground = 0 V). For test circuit see Fig. 10.

-40 °C to +85 °C

-40 °C to +125 °C

Symbol Parameter

Conditions

Min

Typ[1]

Max

Min

Max

Unit

CP to Q; see Fig. 8

[2]

VCC = 1.65 V to 1.95 V

1.0

3.6

9.9

1.0

12.5

ns

VCC = 2.3 V to 2.7 V

0.5

2.3

7.0

0.5

9.0

ns

VCC = 2.7 V

0.5

2.6

6.0

0.5

8.0

ns

VCC = 3.0 V to 3.6 V

0.5

2.2

5.0

0.5

6.5

ns

tpd

propagation delay

VCC = 4.5 V to 5.5 V

0.5

1.7

3.8

0.5

5.0

ns

D to CP; see Fig. 9

VCC = 1.65 V to 1.95 V

2.5

1.4

-

2.5

-

ns

VCC = 2.3 V to 2.7 V

1.7

0.9

-

1.7

-

ns

VCC = 2.7 V

1.7

0.9

-

1.7

-

ns

VCC = 3.0 V to 3.6 V

1.3

0.6

-

1.2

-

ns

tsu

set-up time

VCC = 4.5 V to 5.5 V

1.2

0.6

-

1.2

-

ns

D to CP; see Fig. 9

VCC = 1.65 V to 1.95 V

0

-0.7

-

0

-

ns

VCC = 2.3 V to 2.7 V

0

-0.4

-

0

-

ns

VCC = 2.7 V

+0.5

-0.3

-

0.5

-

ns

VCC = 3.0 V to 3.6 V

+0.5

-0.3

-

0.5

-

ns

th

hold time

VCC = 4.5 V to 5.5 V

+0.5

-0.2

-

0.5

-

ns

CP HIGH or LOW; see Fig. 9

VCC = 1.65 V to 1.95 V

3.0

1.1

-

3.0

-

ns

VCC = 2.3 V to 2.7 V

2.5

0.7

-

2.5

-

ns

VCC = 2.7 V

2.5

0.6

-

2.5

-

ns

VCC = 3.0 V to 3.6 V

2.5

0.6

-

2.5

-

ns

tW

pulse width

VCC = 4.5 V to 5.5 V

2.0

0.5

-

2.0

-

ns

CP; see Fig. 9

VCC = 1.65 V to 1.95 V

160

250

-

160

-

MHz

VCC = 2.3 V to 2.7 V

160

300

-

160

-

MHz

VCC = 2.7 V

160

350

-

160

-

MHz

VCC = 3.0 V to 3.6 V

160

450

-

160

-

MHz

fmax

maximum

frequency

VCC = 4.5 V to 5.5 V

200

500

-

200

-

MHz

CPD

power dissipation

capacitance

VI = GND to VCC; VCC = 3.3 V [3]

-

17

-

-

-

pF

[1] Typical values are measured at Tamb = 25 °C and VCC = 1.8 V, 2.5 V, 2.7 V, 3.3 V and 5.0 V respectively.

[2] tpd is the same as tPLH and tPHL.

[3] CPD is used to determine the dynamic power dissipation (PD in μW).

PD = CPD × VCC 2 × fi × N + ∑(CL × VCC 2 × fo) where:

fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF;

VCC = supply voltage in V; N = number of inputs switching; ∑(CL × VCC 2 × fo) = sum of outputs.

74LVC1G79

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© Nexperia B.V. 2022. All rights reserved

Product data sheet

Rev. 14 — 29 March 2022

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