over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Load Circuit and

Voltage Waveforms)

−55°C to

125°C

−40°C to 85°C

UNIT

MIN

MAX

MIN

MAX

tsu

Setup time

Data

4.9

4.3

ns

PRE or CLR inactive

ns

th

Hold time

Data after CLK↑

0

0

ns

trec

Recovery time, before CLK↑

CLR↑ or PRE↑

4.7

4.1

ns

4.8 Timing Requirements, VCC = 5 V ± 0.5 V

over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Load Circuit and

Voltage Waveforms)

−55°C to

125°C

−40°C to 85°C

UNIT

MIN

MAX

MIN

MAX

fclock

Clock frequency

110

125

MHz

tw

Pulse duration

PRE or CLR low

4

3.5

ns

CLK

4.5

3.9

tsu

Setup time

Data

3.5

3.1

ns

PRE or CLR inactive

ns

th

Hold time

Data after CLK↑

0

0

ns

trec

Recovery time, before CLK↑

CLR↑ or PRE↑

2.7

2.4

ns

4.9 Switching Characteristics, VCC = 1.5 V

over recommended operating free-air temperature range, VCC = 1.5 V, CL = 50 pF (unless otherwise noted) (see Load Circuit

and Voltage Waveforms)

PARAMETER

FROM (INPUT)

TO (OUTPUT)

−55°C to

125°C

−40°C to 85°C

UNIT

MIN

MAX

MIN

MAX

fmax

9

10

MHz

tPLH

CLK

Q or Q

125

114

ns

tPHL

125

114

tPLH

PRE or CLR

Q or Q

132

120

ns

tPHL

144

131

4.10 Switching Characteristics, VCC = 3.3 V ± 0.3 V

over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Load Circuit and

Voltage Waveforms)

PARAMETER

FROM (INPUT)

TO (OUTPUT)

−55°C to

125°C

−40°C to 85°C

UNIT

MIN

MAX

MIN

MA

X

fmax

79

90

MHz

tPLH

CLK

Q or Q

3.5

14

3.6 12.7

ns

tPHL

3.5

14

3.6 12.7

tPLH

PRE or CLR

Q or Q

3.7

14.7

3.8 13.4

ns

tPHL

4

16.1

4.1 14.6

CD54AC74, CD74AC74

SCHS231E – NOVEMBER 1998 – REVISED AUGUST 2024

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