December 1990

6

Philips Semiconductors

Product specification

4-bit binary ripple counter

74HC/HCT93

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see

Output capability: standard

Note to HCT types

The value of additional quiescent supply current (

To determine

AC CHARACTERISTICS FOR 74HCT

INPUT

UNIT LOAD COEFFICIENT

0.60

0.40

SYMBOL

PARAMETER

UNIT

TEST CONDITIONS

74HCT

(V)

WAVEFORMS

+25

−40 to +85

−40 to +125

min.

typ.

max.

min.

max.

min.

max.

propagation delay

18

34

43

51

ns

4.5

Fig.6

propagation delay

18

34

43

51

ns

4.5

Fig.6

propagation delay

24

46

58

69

ns

4.5

Fig.6

propagation delay

30

58

73

87

ns

4.5

Fig.6

propagation delay

17

33

41

50

ns

4.5

Fig.7

output transition time

7

15

19

22

ns

4.5

Fig.6

removal time

10

3

13

15

ns

4.5

Fig.7

pulse width

16

7

20

24

ns

4.5

Fig.6

master reset pulse width

16

5

20

24

ns

4.5

Fig.7

maximum clock pulse

frequency

30

70

24

20

MHz

4.5

Fig.6