Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Typ
Symbol
Parameter
Conditions
Min
Max
Units
(Note 1)
e
e
e b
e
b
1.5
V
V
Input Clamp Voltage
V
Min, I
Min, I
18 mA
V
V
I
CC
I
High Level Output
Voltage
V
V
Max
Min
DM54
DM74
DM54
DM74
DM74
Data
2.5
2.7
3.4
3.4
OH
CC
OH
e
e
Max, V
IL
IH
e
e
e
V
OL
Low Level Output
Voltage
V
V
Min, I
Max
Min
0.25
0.35
0.25
0.4
CC
OL
e
Max, V
IH
IL
0.5
0.4
0.1
0.1
0.2
0.2
20
V
e
e
Min
I
4 mA, V
CC
OL
@
Input Current Max
e
CC
I
I
I
V
Max
I
e
Input Voltage
V
I
7V
Clock
Preset
Clear
Data
mA
e
High Level Input
Current
V
V
Max
Max
Max
IH
CC
e
2.7V
I
Clock
Clear
Preset
Data
20
mA
40
40
e
b
Low Level Input
Current
V
V
0.4
0.4
0.8
0.8
100
100
8
IL
CC
e
0.4V
I
b
b
b
Clock
Preset
Clear
DM54
DM74
mA
e
b
b
b
b
I
I
Short Circuit
V
CC
20
20
OS
CC
mA
mA
Output Current
(Note 2)
e
Supply Current
V
CC
Max (Note 3)
4
e
e
25 C.
Note 1: All typicals are at V
5V, T
§
Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second. For devices, with feedback from the outputs, where
CC
A
e
shorting the outputs to ground may cause the outputs to change logic state an equivalent test may be performed where V
2.25V and 2.125V for DM54 and
O
DM74 series, respectively, with the minimum and maximum limits reduced by one half from their stated values. This is very useful when using automatic test
equipment.
Note 3: With all outputs open, I
CC
is measured with CLOCK grounded after setting the Q and Q outputs high in turn.
e
e
25 C (See Section 1 for Test Waveforms and Output Load)
Switching Characteristics at V
5V and T
A
§
CC
e
R
2 kX
L
From (Input)
To (Output)
e
e
L
Symbol
Parameter
C
Min
25
15 pF
C
50 pF
Max
Units
L
Max
Min
f
t
Maximum Clock Frequency
20
MHz
ns
MAX
Propagation Delay Time
Low to High Level Output
Clock to
Q or Q
PLH
25
30
25
30
25
30
35
35
35
35
35
35
t
t
t
t
t
Propagation Delay Time
High to Low Level Output
Clock to
Q or Q
PHL
PLH
PHL
PLH
PHL
ns
ns
ns
ns
ns
Propagation Delay Time
Low to High Level Output
Preset
to Q
Propagation Delay Time
High to Low Level Output
Preset
to Q
Propagation Delay Time
Low to High Level Output
Clear
to Q
Propagation Delay Time
High to Low Level Output
Clear
to Q
3