SN74LVC74

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

WITH CLEAR AND PRESET

SCAS287B – JANUARY 1993 – REVISED JULY 1995

3

POST OFFICE BOX 655303

recommended operating conditions (see Note 4)

MIN

MAX

UNIT

VCC

Supply voltage

Operating

2

3.6

V

VCC

Supply voltage

Data retention only

1.5

V

VIH

High-level input voltage

VCC = 2.7 V to 3.6 V

2

V

VIL

Low-level input voltage

VCC = 2.7 V to 3.6 V

0.8

V

VI

Input voltage

0

5.5

V

VO

Output voltage

0

VCC

V

IOH

High level output current

VCC = 2.7 V

–12

mA

IOH

High-level output current

VCC = 3 V

–24

mA

IOL

Low level output current

VCC = 2.7 V

12

mA

IOL

Low-level output current

VCC = 3 V

24

mA

∆t/∆v

Input transition rise or fall rate

0

10

ns / V

TA

Operating free-air temperature

–40

85

°C

NOTE 4: Unused inputs must be held high or low to prevent them from floating.

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC†

MIN

TYP‡

MAX

UNIT

IOH = – 100 µA

MIN to MAX

VCC – 0.2

VOH

IOH =12 mA

2.7 V

2.2

V

VOH

IOH = – 12 mA

3 V

2.4

V

IOH = – 24 mA

3 V

2.2

IOL = 100 µA

MIN to MAX

0.2

VOL

IOL = 12 mA

2.7 V

0.4

V

IOL = 24 mA

3 V

0.55

II

VI = 5.5 V or GND

3.6 V

±5

µA

ICC

VI = VCC or GND,

IO = 0

3.6 V

10

µA

nICC

One input at VCC – 0.6 V,

Other inputs at VCC or GND

2.7 V to 3.6 V

500

µA

Ci

VI = VCC or GND

3.3 V

5

pF

† For conditions shown as MIN or MAX, use the appropriate values under recommended operating conditions.

‡ All typical values are at VCC = 3.3 V, TA = 25°C.

timing requirements over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted)

VCC = 3.3 V

± 0.3 V

VCC = 2.7 V

UNIT

MIN

MAX

MIN

MAX

fclock

Clock frequency

0

100

0

83

MHz

t

Pulse duration

PRE or CLR low

4

5

ns

tw

Pulse duration

CLK high or low

5

6

ns

t

Setup time before CLK

↑

Data

3

4

ns

tsu

Setup time before CLK

↑

PRE or CLR inactive

2

3

ns

th

Hold time, data after CLK

↑

1

2

ns