74HC_HCT240

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© NXP Semiconductors N.V. 2016. All rights reserved.

Product data sheet

Rev. 4 — 25 February 2016

6 of 17

NXP Semiconductors

74HC240; 74HCT240

Octal buffer/line driver; 3-state; inverting

10. Dynamic characteristics

II

input leakage

current

VI =VCC or GND;

VCC =5.5 V

--

0.1

-

1.0

-

1.0

A

IOZ

OFF-state

output current

VI =VIH or VIL; VCC =5.5 V;

VO =VCC or GND

--

0.5

-

5.0

-

10

A

ICC

supply current VI =VCC or GND;

VCC =5.5 V; IO =0A

-

-

8.0

-

80

-

160

A

I

CC

additional

supply current

per input pin;

VI =VCC  2.1 V;

other inputs at VCC or GND;

VCC = 4.5 V to 5.5 V;

IO =0A

nAn or inputs

-

150

540

-

675

-

735

A

nOE input

-

70

252

-

315

-

343

A

CI

input

capacitance

-3.5

-

-

-

-

-

pF

Table 6.

Static characteristics …continued

At recommended operating conditions; voltages are referenced to GND (ground = 0 V).

Symbol Parameter

Conditions

25

C

40 C to +85 C 40 C to +125 C Unit

Min

Typ

Max

Min

Max

Min

Max

Table 7.

Dynamic characteristics

GND = 0 V; for test circuit see Figure 8.

Symbol Parameter

Conditions

25

C

40 C to +125 C Unit

Min

Typ

Max

Max

(85

C)

Max

(125

C)

74HC240

tpd

propagation delay

nAn to nYn; see Figure 6

[1]

VCC = 2.0 V

-

30

100

125

150

ns

VCC = 4.5 V

-

11

20

25

30

ns

VCC = 5.0 V; CL =15pF

-

9

-

-

-

ns

VCC = 6.0 V

-

9

17

21

26

ns

ten

enable time

nOE to nYn; see Figure 7

[2]

VCC = 2.0 V

-

39

150

190

225

ns

VCC = 4.5 V

-

14

30

38

45

ns

VCC = 6.0 V

-

11

26

33

38

ns

tdis

disable time

nOE to nYn or see Figure 7

[3]

VCC = 2.0 V

-

41

150

190

225

ns

VCC = 4.5 V

-

15

30

38

45

ns

VCC = 6.0 V

-

12

26

33

38

ns

tt

transition time

see Figure 6

[4]

VCC = 2.0 V

-

14

60

75

90

ns

VCC = 4.5 V

-

5

12

15

18

ns

VCC = 6.0 V

-

4

10

13

15

ns