4.5 Electrical Characteristics

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

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

−55°C to

125°C

−40°C to 85°C

UNIT

MIN

MAX

MIN MAX

MIN

MAX

VOH

VI = VIH or VIL

IOH = −50 µA

1.5 V

1.4

1.4

1.4

V

3 V

2.9

2.9

2.9

4.5 V

4.4

4.4

4.4

IOH = −4 mA

3 V

2.58

2.4

2.48

IOH = −24 mA

4.5 V

3.94

3.7

3.8

IOH = −50 mA

(1)

5.5 V

3.85

IOH = −75 mA

(1)

5.5 V

3.85

VOL

VI = VIH or VIL

IOL = 50 µA

1.5 V

0.1

0.1

0.1

V

3 V

0.1

0.1

0.1

4.5 V

0.1

0.1

0.1

IOL = 12 mA

3 V

0.36

0.5

0.44

IOL = 24 mA

4.5 V

0.36

0.5

0.44

IOL = 50 mA

(1)

5.5 V

1.65

IOL = 75 mA

(1)

5.5 V

1.65

II

VI = VCC or GND

5.5 V

±0.1

±1

±1

µA

ICC

VI = VCC or GND,

IO = 0

5.5 V

4

80

40

µA

Ci

10

10

10

pF

(1)

Test one output at a time, not exceeding 1-second duration. Measurement is made by forcing indicated current and measuring voltage

to minimize power dissipation. Test verifies a minimum 50-Ω transmission-line drive capability at 85°C and 75-Ω transmission-line drive

capability at 125°C.

4.6 Timing Requirements, VCC = 1.5 V

over recommended operating free-air temperature range, VCC = 1.5 V (unless otherwise noted)

−55°C to

125°C

−40°C to 85°C

UNIT

MI

N

MAX

MIN MAX

fclock

Clock frequency

9

10

MHz

tw

Pulse duration

PRE or CLR low

50

44

ns

CLK

56

49

tsu

Setup time

Data

44

39

ns

PRE or CLR inactive

ns

th

Hold time

Data after CLK↑

0

0

ns

trec

Recovery time, before CLK↑

CLR↑ or PRE↑

34

30

ns

4.7 Timing Requirements, 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)

−55°C to

125°C

−40°C to 85°C

UNIT

MIN

MAX

MIN

MAX

fclock

Clock frequency

79

90

MHz

tw

Pulse duration

PRE or CLR low

5.6

4.9

ns

CLK

6.3

5.5

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CD54AC74, CD74AC74

SCHS231E – NOVEMBER 1998 – REVISED AUGUST 2024

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