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DM74LS161A • DM74LS163A
DM74LS163A Recommended Operating Conditions
Note 8: C
L
= 15 pF, R
L
= 2 kΩ, T
A
= 25°C and V
CC
= 5V.
Note 9: C
L
= 50 pF, R
L
= 2 kΩ, T
A
= 25°C and V
CC
= 5V.
DM74LS163A Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 10: All typicals are at V
CC
= 5V, T
A
= 25°C.
Note 11: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 12: I
CCH
is measured with the load HIGH, then again with the load LOW, with all other inputs HIGH and all outputs OPEN.
Note 13: I
CCL
is measured with the clock input HIGH, then again with the clock input LOW, with all other inputs LOW and all outputs OPEN.
Symbol Parameter Min Nom Max Units
V
CC
Supply Voltage 4.75 5 5.25 V
V
IH
HIGH Level Input Voltage 2 V
V
IL
LOW Level Input Voltage 0.8 V
I
OH
HIGH Level Output Current −0.4 mA
I
OL
LOW Level Output Current 8 mA
f
CLK
Clock Frequency (Note 8) 0 25 MHz
Clock Frequency (Note 9) 0 20 MHz
t
W
Pulse Width Clock 20 6
ns
(Note 8) Clear 20 9
Pulse Width Clock 25
ns
(Note 9) Clear 25
t
SU
Setup Time Data 20 8
(Note 8) Enable P 25 17 ns
Load 25 15
Setup Time Data 20
(Note 9) Enable P 30 ns
Load 30
t
H
Hold Time Data 0 −3
ns
(Note 8) Others 0 −3
Hold Time Data 5
ns
(Note 9) Others 5
t
REL
Clear Release Time (Note 8) 20 ns
Clear Release Time (Note 9) 25 ns
T
A
Free Air Operating Temperature 0 70 °C
Symbol Parameter Conditions Min
Typ
(Note 10)
Max Units
V
I
Input Clamp Voltage V
CC
= Min, I
I
= −18 mA −1.5 V
V
OH
HIGH Level V
CC
= Min, I
OH
= Max
2.7 3.4 V
Output Voltage V
IL
= Max, V
IH
= Min
V
OL
LOW Level V
CC
= Min, I
OL
= Max
0.35 0.5
Output Voltage V
IL
= Max, V
IH
= Min V
I
OL
= 4 mA, V
CC
= Min 0.25 0.4
I
I
Input Current @ Max V
CC
= Max Enable T 0.2
Input Voltage V
I
= 7V Clock, Clear 0.2
mA
Load 0.2
Others 0.1
I
IH
HIGH Level V
CC
= Max Enable T 40
Input Current V
I
= 2.7V Load 40
µA
Clock, Clear 40
Others 20
I
IL
LOW Level V
CC
= Max Enable T −0.8
Input Current V
I
= 0.4V Clock, Clear −0.8
mA
Load −0.8
Others −0.4
I
OS
Short Circuit Output Current V
CC
= Max (Note 11) −20 −100 mA
I
CCH
Supply Current with Outputs HIGH V
CC
= Max (Note 12) 18 31 mA
I
CCL
Supply Current with Outputs LOW V
CC
= Max (Note 13) 18 32 mA
