74HCT4543 datasheet(7/11 Pages) PHILIPS

Il numero della parte	74HCT4543

Spiegazioni elettronici	BCD to 7-segment latch/decoder/driver for LCDs

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Produttore elettronici	PHILIPS [NXP Semiconductors]

Homepage	http://www.nxp.com

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7 / 11 page

December 1990

7

Philips Semiconductors

Product speciﬁcation

BCD to 7-segment latch/decoder/driver for

LCDs

74HC/HCT4543

AC CHARACTERISTICS FOR 74HC

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

SYMBOL

PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HC

VCC

(V)

OTHER

+25

−40 to +85 −40 to +125

min.

typ.

max. min.

max.

min.

max.

tPHL/ tPLH

propagation delay

Dn to Qn

91

33

26

340

68

58

425

85

72

510

102

87

ns

2.0

4.5

6.0

Fig.12

tPHL/ tPLH

propagation delay

LD to Qn

102

37

30

370

74

63

465

93

79

555

111

94

ns

2.0

4.5

6.0

Fig.13

tPHL/ tPLH

propagation delay

BI to Qn

66

24

19

265

53

45

330

66

56

400

80

68

ns

2.0

4.5

6.0

Fig.14

tPHL/ tPLH

propagation delay

PH to Qn

55

20

16

200

40

34

250

50

43

300

60

51

ns

2.0

4.5

6.0

tTHL/ tTLH

output transition time

63

23

18

250

50

43

315

63

54

375

75

64

ns

2.0

4.5

6.0

Figs 12, 13 and 14

tW

LD pulse width

HIGH or LOW

35

7

6

11

4

3

45

9

8

55

11

9

ns

2.0

4.5

6.0

Fig.13

tsu

set-up time

Dn to LD

60

12

10

8

3

2

75

15

13

90

18

15

ns

2.0

4.5

6.0

Fig.15

th

hold time

Dn to LD

30

6

5

3

1

40

8

7

45

9

8

ns

2.0

4.5

6.0

Fig.15

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