HD74HCT240

Rev.2.00 Mar 30, 2006 page 3 of 6

Recommended Operating Conditions

Item

Symbol

Ratings

Unit

Conditions

Supply voltage

4.5 to 5.5

V

Input / Output voltage

V

Operating temperature

Ta

–40 to 85

Input rise / fall time

*1

0 to 500

ns

Notes: 1. This item guarantees maximum limit when one input switches.

Waveform: Refer to test circuit of switching characteristics.

Electrical Characteristics

Ta = 25°C

Ta = –40 to+85°C

Item

Symbol

Min

Typ

Max

Min

Max

Unit

Test Conditions

4.5 to 5.5

2.0

—

—

2.0

—

V

Input voltage

4.5 to 5.5

—

—

0.8

—

0.8

V

4.5

4.4

—

—

4.4

—

µA

4.5

4.18

—

—

4.13

—

V

4.5

—

—

0.1

—

0.1

µA

Output voltage

4.5

—

—

0.26

—

0.33

V

Off-state output

current

5.5

—

—

±0.5

—

±5.0

µA

Input current

Iin

5.5

—

—

±0.1

—

±1.0

µA

Quiescent current

5.5

—

—

4.0

—

40

µA

µA

Switching Characteristics

Ta = 25°C

Ta = –40 to +85°C

Item

Min

Typ

Max

Min

Max

Unit

Test Conditions

4.5

—

13

20

—

25

Propagation delay time

4.5

—

9

20

—

25

ns

4.5

—

14

30

—

38

Output enable time

4.5

—

12

30

—

38

ns

4.5

—

14

30

—

38

Output disable time

4.5

—

18

30

—

38

ns

Output rise/fall time

4.5

—

4

12

—

15

ns

Input capacitance

Cin

—

—

5

10

—

10

pF