’LS90 Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted) (Continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 1)

High Level Input

Reset

20

Current

A40

m

A

B80

Low Level Input

Reset

b

04

Current

A

b

24

mA

B

b

32

Short Circuit

b

20

b

100

mA

Output Current

Supply Current

9

15

mA

Note 1

Note 2

Not more than one output should be shorted at a time and the duration should not exceed one second

Note 3

Note 4

’LS90 Switching Characteristics

From (Input)

Symbol

Parameter

To (Output)

Units

Min

Max

Min

Max

Maximum Clock

32

20

MHz

Frequency

16

10

Propagation Delay Time

16

20

ns

Low to High Level Output

Propagation Delay Time

18

24

ns

High to Low Level Output

Propagation Delay Time

48

52

ns

Low to High Level Output

Propagation Delay Time

50

60

ns

High to Low Level Output

Propagation Delay Time

16

23

ns

Low to High Level Output

Propagation Delay Time

21

30

ns

High to Low Level Output

Propagation Delay Time

32

37

ns

Low to High Level Output

Propagation Delay Time

35

44

ns

High to Low Level Output

Propagation Delay Time

32

36

ns

Low to High Level Output

Propagation Delay Time

35

44

ns

High to Low Level Output

Propagation Delay Time

SET-9 to

30

35

ns

Low to High Level Output

Propagation Delay Time

SET-9 to

40

48

ns

High to Low Level Output

Propagation Delay Time

SET-0 to

40

52

ns

High to Low Level Output

Any Q

3