MC74HC259A datasheet(4/9 Pages) ONSEMI

Part #	MC74HC259A

Description	8-Bit Addressable Latch 1-of-8 Decoder

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Manufacturer	ONSEMI [ON Semiconductor]

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MC74HC259A

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4

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)

Symbol

Parameter

VCC

V

Guaranteed Limit

Unit

− 55 to

25°C

v 85°C

v 125°C

tPLH,

tPHL

Maximum Propagation Delay, Data to Output

(Figures 2 and 7)

2.0

3.0

4.5

6.0

125

45

32

25

160

60

32

28

175

70

42

33

ns

tPLH,

tPHL

Maximum Propagation Delay, Address Select to Output

(Figures 3 and 7)

2.0

3.0

4.5

6.0

150

60

32

28

175

70

40

30

200

80

45

35

ns

tPLH,

tPHL

Maximum Propagation Delay, Enable to Output

(Figures 4 and 7)

2.0

3.0

4.5

6.0

150

60

32

28

175

70

40

30

200

80

45

35

ns

tPHL

Maximum Propagation Delay, Reset to Output

(Figures 5 and 7)

2.0

3.0

4.5

6.0

110

36

22

19

125

45

26

23

160

60

32

28

ns

tTLH,

tTHL

Maximum Output Transition Time, Any Output

(Figures 2 and 7)

2.0

3.0

4.5

6.0

75

27

15

13

95

32

19

16

110

36

22

19

ns

Cin

Maximum Input Capacitance

−

10

pF

CPD

Power Dissipation Capacitance (Per Package)

Typical @ 25°C, VCC = 5.0 V

pF

30

TIMING REQUIREMENTS (Input tr = tf = 6 ns)

Symbol

Parameter

VCC

V

Guaranteed Limit

Unit

− 55 to

25°C

v 85°C

v 125°C

tsu

Minimum Setup Time, Address or Data to Enable

(Figure 6)

2.0

3.0

4.5

6.0

75

30

15

13

95

40

19

16

110

55

22

19

ns

th

Minimum Hold Time, Enable to Address or Data

(Figure 6)

2.0

3.0

4.5

6.0

1

ns

tw

Minimum Pulse Width, Reset or Enable

(Figure 4 or 5)

2.0

3.0

4.5

6.0

70

27

15

13

90

32

19

16

100

36

22

19

ns

tr, tf

Maximum Input Rise and Fall Times

(Figure 2)

2.0

3.0

4.5

6.0

1000

800

500

400

1000

800

500

400

1000

800

500

400

ns

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