Electrical Characteristics

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

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 1)

Short Circuit

DM54

b

20

b

57

mA

Output Current

(Note 2)

DM74

b

20

b

57

Supply Current

DM54

85

mA

with Outputs High

(Note 3)

DM74

59

94

Supply Current

DM54

91

mA

with Outputs Low

(Note 4)

DM74

63

101

Note 1

Note 2

Not more than one output should be shorted at a time

Note 3

Note 4

Note 5

Applies to 163 which has synchronous clear inputs

Note 6

Symbol

Parameter

From (Input)

Units

To (Output)

Min

Max

Maximum Clock

25

MHz

Frequency

Propagation Delay Time

Clock to

35

ns

Low to High Level Output

Ripple Carry

Propagation Delay Time

Clock to

35

ns

High to Low Level Output

Ripple Carry

Propagation Delay Time

Clock

20

ns

Low to High Level Output

(Load High) to Q

Propagation Delay Time

Clock

23

ns

High to Low Level Output

(Load High) to Q

Propagation Delay Time

Clock

25

ns

Low to High Level Output

(Load Low) to Q

Propagation Delay Time

Clock

29

ns

High to Low Level Output

(Load Low) to Q

Propagation Delay Time

Enable T to

16

ns

Low to High Level Output

Ripple Carry

Propagation Delay Time

Enable T to

16

ns

High to Low Level Output

Ripple Carry

Propagation Delay Time

Clear (Note 7)

38

ns

High to Low Level Output

to Q

Note 7

Propagation delay for clearing is measured from the clear input for the 161 or from the clock input transition for the 163

3