CD54AC74, CD74AC74

DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS

WITH CLEAR AND PRESET

SCHS231D – SEPTEMBER 1998 – REVISED DECEMBER 2002

3

POST OFFICE BOX 655303

recommended operating conditions (see Note 3)

TA = 25°C

–55

°C to

125

°C

–40

°C to

85

°C

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

VCC

Supply voltage

1.5

5.5

1.5

5.5

1.5

5.5

V

VCC = 1.5 V

1.2

1.2

1.2

VIH

High-level input voltage

VCC = 3 V

2.1

2.1

2.1

V

VCC = 5.5 V

3.85

3.85

3.85

VCC = 1.5 V

0.3

0.3

0.3

VIL

Low-level input voltage

VCC = 3 V

0.9

0.9

0.9

V

VCC = 5.5 V

1.65

1.65

1.65

VI

Input voltage

0

VCC

0

VCC

0

VCC

V

VO

Output voltage

0

VCC

0

VCC

0

VCC

V

IOH

High-level output current

VCC = 4.5 V to 5.5 V

–24

–24

–24

mA

IOL

Low-level output current

VCC = 4.5 V to 5.5 V

24

24

24

mA

∆t/∆v

Input transition rise or fall rate

VCC = 1.5 V to 3 V

50

50

50

ns/V

∆t/∆v

Input transition rise or fall rate

VCC = 3.6 V to 5.5 V

20

20

20

ns/V

NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

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

CC

MIN

MAX

MIN

MAX

MIN

MAX

1.5 V

1.4

1.4

1.4

IOH = –50 µA

3 V

2.9

2.9

2.9

4.5 V

4.4

4.4

4.4

VOH

VI = VIH or VIL

IOH = –4 mA

3 V

2.58

2.4

2.48

V

IOH = –24 mA

4.5 V

3.94

3.7

3.8

IOH = –50 mA†

5.5 V

3.85

IOH = –75 mA†

5.5 V

3.85

1.5 V

0.1

0.1

0.1

IOL = 50 µA

3 V

0.1

0.1

0.1

4.5 V

0.1

0.1

0.1

VOL

VI = VIH or VIL

IOL = 12 mA

3 V

0.36

0.5

0.44

V

IOL = 24 mA

4.5 V

0.36

0.5

0.44

IOL = 50 mA†

5.5 V

1.65

IOL = 75 mA†

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

† 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.