5.5 Electrical Characteristics (continued)

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Ci

Input capacitance

VI = VCC or GND, VCC = 3.3 V, TA = 25°C

5

pF

5.6 Timing Requirements: SN54LVC74A

over recommended operating free-air temperature range (unless otherwise noted; see Parameter Measurement Information)

MIN

MAX

UNIT

fclock

Clock frequency

VCC = 2.7 V

83

MHz

VCC = 3.3 V ± 0.3 V

100

tw

Pulse duration

PRE or CLR low

3.3

ns

CLK high or low

3.3

tsu

Setup time before CLK↑

Data

VCC = 2.7 V

3.4

ns

VCC = 3.3 V ± 0.3 V

3

PRE or CLR inactive

VCC = 2.7 V

2.2

VCC = 3.3 V ± 0.3 V

2

th

Hold time, data after CLK↑

1

ns

5.7 Timing Requirements: SN74LVC74A

over recommended operating free-air temperature range (unless otherwise noted; see Parameter Measurement Information)

MIN

MAX

UNIT

fclock

Clock frequency

VCC = 1.8 V or 2.5 V

83

MHz

tw

Pulse duration

PRE or CLR low

VCC = 1.8 V ± 0.15 V

4.1

ns

VCC = 2.5 V ± 0.2 V

3.3

CLK high or low

VCC = 1.8 V ± 0.15 V

4.1

VCC = 2.5 V ± 0.2 V

3.3

tsu

Setup time before CLK↑

Data

VCC = 1.8 V ± 0.15 V

3.6

ns

VCC = 2.5 V ± 0.2 V

2.3

PRE or CLR inactive

VCC = 1.8 V ± 0.15 V

2.7

VCC = 2.5 V ± 0.2 V

1.9

th

Hold time, data after CLK↑

VCC = 1.8 V or 2.5 V

1

ns

SN54LVC74A, SN74LVC74A

SCAS287W – JANUARY 1993 – REVISED DECEMBER 2024

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