’LS163 Electrical Characteristics

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

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 1)

Input Clamp Voltage

b

15

V

High Level Output

DM54

25

34

V

Voltage

DM74

27

34

Low Level Output

DM54

025

04

Voltage

DM74

035

05

V

DM74

025

04

Input Current

Max

Enable T

02

Input Voltage

Clock Clear

02

mA

Load

02

Others

01

High Level Input

Enable T

40

Current

Load

40

m

A

Clock Clear

40

Others

20

Low Level Input

Enable T

b

08

Current

Clock Clear

b

08

mA

Load

b

08

Others

b

04

Short Circuit

DM54

b

20

b

100

mA

Output Current

(Note 2)

DM74

b

20

b

100

Supply Current with

18

31

mA

Outputs High

(Note 3)

Supply Current with

18

32

mA

Outputs Low

(Note 4)

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

’LS163 Switching Characteristics

From (Input)

Symbol

Parameter

To (Output)

Units

Min

Max

Min

Max

Maximum Clock Frequency

25

20

MHz

Propagation Delay Time

Clock to

25

30

ns

Low to High Level Output

Ripple Carry

Propagation Delay Time

Clock to

30

38

ns

High to Low Level Output

Ripple Carry

Propagation Delay Time

Clock to Any Q

22

27

ns

Low to High Level Output

(Load High)

Propagation Delay Time

Clock to Any Q

27

38

ns

High to Low Level Output

(Load High)

5