2003 Jul 10

9

Philips Semiconductors

Product specification

Dual D-type flip-flop with set and reset;

positive-edge trigger

74HC74; 74HCT74

Family 74HCT

At recommended operating conditions; voltages are referenced to GND (ground=0V).

Note

Remark to HCT types

The value of additional quiescent supply current (

multiply this value by the unit load coefficient shown in the table.

SYMBOL

PARAMETER

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

WAVEFORMS

HIGH-level input

voltage

4.5 to 5.5

2.0

1.6

−

V

LOW-level input voltage

4.5 to 5.5

−

1.2

0.8

V

HIGH-level output

voltage

4.5

3.84

4.32

−

V

LOW-level output

voltage

4.5

0.33

0.15

−

V

input leakage current

5.5

−−±1.0

µA

quiescent supply

current

5.5

−−

40

µA

∆I

CC

additional quiescent

supply current per input

4.5 to 5.5

−

100

450

µA

HIGH-level input

voltage

4.5 to 5.5

2.0

−−

V

LOW-level input voltage

4.5 to 5.5

−−

0.8

V

HIGH-level output

voltage

4.5

3.7

−−

V

LOW-level output

voltage

4.5

−−

0.4

V

input leakage current

5.5

−−±1.0

µA

quiescent supply

current

5.5

−−

80

µA

∆I

CC

additional quiescent

supply current per input

4.5 to 5.5

−−

490

µA

INPUT

UNIT LOAD COEFFICIENT

nD

0.70

nRD

0.70

nSD

0.80

nCP

0.80