74HC194D datasheet(7/10 Pages) PHILIPS

Il numero della parte	74HC194D

Spiegazioni elettronici	4-bit bidirectional universal shift register

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Produttore elettronici	PHILIPS [NXP Semiconductors]

Homepage	http://www.nxp.com

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7 / 10 page

December 1990

7

Philips Semiconductors

Product speciﬁcation

4-bit bidirectional universal shift register

74HC/HCT194

AC CHARACTERISTICS FOR 74HC

GND = 0 V; tr =tf = 6 ns; CL = 50 pF

SYMBOL

PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HC

VCC

(V)

WAVEFORMS

+25

−40 to +85

−40 to +125

min.

typ.

max.

min.

max.

min.

max.

tPHL/ tPLH

propagation delay

CP to Qn

47

17

14

145

29

25

180

36

31

220

44

38

ns

2.0

4.5

6.0

Fig.7

tPHL

propagation delay

MR to Qn

39

14

11

140

28

24

175

35

30

210

42

36

ns

2.0

4.5

6.0

Fig.8

tTHL/ tTLH

output transition time

19

7

6

75

15

13

95

19

16

110

22

19

ns

2.0

4.5

6.0

Fig.7

tW

clock pulse width

HIGH or LOW

80

16

14

17

6

5

100

20

17

120

24

20

ns

2.0

4.5

6.0

Fig.7

tW

master reset pulse

width; LOW

80

16

14

17

6

5

100

20

17

120

24

20

ns

2.0

4.5

6.0

Fig.8

trem

removal time

MR to CP

60

12

10

17

6

5

75

15

13

90

18

15

ns

2.0

4.5

6.0

Fig.8

tsu

set-up time

Dn to CP

70

14

12

17

6

5

90

18

15

105

21

18

ns

2.0

4.5

6.0

Fig.9

tsu

set-up time

S0, S1 to CP

80

16

12

22

8

6

100

20

17

120

24

20

ns

2.0

4.5

6.0

Fig.10

tsu

set-up time

DSR, DSL to CP

70

14

12

19

7

6

90

18

15

105

21

18

ns

2.0

4.5

6.0

th

hold time

Dn to CP

0

−14

−5

−4

0

ns

2.0

4.5

6.0

Fig.9

th

hold time

S0, S1 to CP

0

−11

−4

−3

0

ns

2.0

4.5

6.0

Fig.10

th

hold time

DSR, DSL to CP

0

−17

−6

−5

0

ns

2.0

4.5

6.0

fmax

maximum clock pulse

frequency

6.0

30

35

31

93

111

4.8

24

28

4.0

20

24

MHz

2.0

4.5

6.0

Fig.7

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