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DM74ALS273
Absolute Maximum Ratings(Note 1)
Note 1: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Recommended Operating Conditions
Note 2: The (↑) arrow indicates the positive edge of the Clock is used for reference.
Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at V
CC
= 5V, T
A
= 25°C.
Switching Characteristics
over recommended operating free air temperature range.
Supply Voltage 7V
Input Voltage 7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range −65°C to +150°C
Typical θ
JA
N Package 60.0°C/W
M Package 79.0°C/W
Symbol Parameter Min Nom Max Units
V
CC
Supply Voltage 4.5 5 5.5 V
V
IH
HIGH Level Input Voltage 2 V
V
IL
LOW Level Input Voltage 0.8 V
I
OH
HIGH Level Output Current −2.6 mA
I
OL
LOW Level Output Current 24 mA
f
CLK
Clock Frequency 0 35 MHz
t
W(CLK)
Width of Clock Pulse HIGH 14 ns
LOW 14 ns
t
W
Width of Clear Pulse LOW 10 ns
t
SU
Data Setup Time (Note 2) 10↑
ns
Clear Inactive 15↑
t
H
Data Hold Time 0↑ ns
T
A
Free Air Operating Temperature 0 70 °C
Symbol Parameter Conditions Min Typ Max Units
V
IK
Input Clamp Voltage V
CC
= 4.5V, I
I
= −18 mA −1.5 V
V
OH
HIGH Level V
CC
= 4.5V I
OH
= −2.6 mA 2.4 3.3 V
Output Voltage V
CC
= 4.5V to 5.5V I
OH
= −400 µAV
CC
− 2V
V
OL
LOW Level
V
CC
= 4.5V
I
OL
= 12 mA 0.25 0.4 V
Output Voltage I
OL
= 24 mA 0.35 0.5 V
I
I
Input Current @ Maximum Input Voltage V
CC
= 5.5V, V
IH
= 7V 0.1 mA
I
IH
HIGH Level Input Current V
CC
= 5.5V, V
IH
= 2.7V 20 µA
I
IL
LOW Level Input Current V
CC
= 5.5V, V
IL
= 0.4V −0.2 mA
I
O
Output Drive Current V
CC
= 5.5V V
O
= 2.25V −30 −112 mA
I
CC
Supply Current V
CC
= 5.5V Outputs HIGH 11 20 mA
Outputs OPEN Outputs LOW 19 29 mA
Symbol Parameter Conditions From To Min Max Units
f
MAX
Maximum Clock Frequency V
CC
= 4.5V to 5.5V 35 MHz
t
PHL
Propagation Delay Time R
L
= 500Ω
Clear Any Q 4 18 ns
HIGH-to-LOW Level Output C
L
= 50 pF
t
PLH
Propagation Delay Time
Clock Any Q 2 12 ns
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
Clock Any Q 3 15 ns
HIGH-to-LOW Level Output
