74AHC240BQ datasheet(6/16 Pages) NXP

部件名	74AHC240BQ

功能描述	Octal buffer/line driver; inverting; 3-state

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制造商	NXP [NXP Semiconductors]

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74AHC_AHCT240

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Product data sheet

Rev. 2 — 26 November 2010

6 of 16

NXP Semiconductors

74AHC240; 74AHCT240

Octal buffer/line driver; inverting; 3-state

10. Dynamic characteristics

Table 7.

Dynamic characteristics

Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.

Symbol Parameter

Conditions

25

C

40 C to +125 C

Unit

Min

Typ[1]

Max

Min

Max

(85

C)

Max

(125

C)

74AHC240

tpd

propagation delay

nAn to nYn; see Figure 5

[2]

VCC = 3.0 V to 3.6 V; CL = 15 pF

-

3.9

7.5

1.0

8.6

10.8

ns

VCC = 3.0 V to 3.6 V; CL = 50 pF

-

5.8

11.0

1.0

12.5

15.6

ns

VCC = 4.5 V to 5.5 V; CL = 15 pF

-

2.8

4.8

1.0

5.7

7.1

ns

VCC = 4.5 V to 5.5 V; CL = 50 pF

-

4.2

7.3

1.0

8.5

10.6

ns

ten

enable time

nOE to nYn; see Figure 6

[2]

VCC = 3.0 V to 3.6 V; CL = 15 pF

-

4.4

10.0

1.0

12.0

19.4

ns

VCC = 3.0 V to 3.6 V; CL = 50 pF

-

5.8

13.5

1.0

15.5

19.4

ns

VCC = 4.5 V to 5.5 V; CL = 15 pF

-

3.1

6.5

1.0

7.7

12.5

ns

VCC = 4.5 V to 5.5 V; CL = 50 pF

-

4.1

8.5

1.0

10.0

12.5

ns

tdis

disable time

nOE to nYn; see Figure 6

[2]

VCC = 3.0 V to 3.6 V; CL = 15 pF

-

5.3

9.0

1.0

10.0

18.1

ns

VCC = 3.0 V to 3.6 V; CL = 50 pF

-

8.9

13.0

1.0

14.5

18.1

ns

VCC = 4.5 V to 5.5 V; CL = 15 pF

-

3.9

5.8

1.0

6.5

8.1

ns

VCC = 4.5 V to 5.5 V; CL = 50 pF

-

6.2

8.7

1.0

9.5

11.8

ns

CPD

power dissipation

capacitance

VI = GND to VCC; CL =50pF;

fi =1MHz

[3]

-9

-

pF

类似零件编号 - 74AHC240BQ

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NXP Semiconductors	74AHC244	80Kb / 16P	Octal buffer/line driver; 3-state 1999 Sep 28
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制造商	部件名	数据表	功能描述
Nexperia B.V. All right...	74AHCT240-Q100	805Kb / 15P	Octal buffer/line driver; inverting 3-state
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Nexperia B.V. All right...	74HC540-Q100	797Kb / 16P	Octal buffer/line driver; 3-state; inverting
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