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DM74ALS540A
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
Electrical Characteristics
over recommended free air temperature range
Switching Characteristics
over recommended free air operating temperature range
Supply Voltage 7V
Input Voltage 7V
Voltage Applied to a
Disabled 3-STATE Output 5.5V
Operating Free-Air Temperature Range 0°C to +70°C
Storage Temperature Range −65°C to +150°C
Typical θ
JA
N Package 58.5°C/W
M Package 77.5°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 0.7 V
I
OH
HIGH Level Output Current −15 mA
I
OL
LOW Level Output Current 24 mA
T
A
Free Air Operating Temperature 0 70 °C
Symbol Parameter Test Conditions Min Typ Max Units
V
IK
Input Clamp Voltage V
CC
= Min, I
I
= −18 mA −1.5 V
V
OH
HIGH Level V
CC
= 4.5V to 5.5V I
OH
= −0.4 mA V
CC
− 2
Output Voltage V
CC
= Min I
OH
= −3 mA 2.4 3.2 V
I
OH
= Max 2
V
OL
LOW Level V
CC
= Min I
OL
= 12 mA 0.25 0.4
mA
Output Voltage I
OL
= 24 mA 0.35 0.5
I
I
Input Current @ Maximum Input Voltage V
CC
= Max, V
I
= 7V 100 µA
I
IH
HIGH Level Input Current V
CC
= Max, V
I
= 2.7V 20 µA
I
IL
LOW Level Input Current V
CC
= Max, V
I
= 0.4V −100 µA
I
OZH
HIGH Level 3-STATE Output Current V
CC
= Max, V
O
= 2.7V 20 µA
I
OZL
LOW Level 3-STATE Output Current V
CC
= Max, V
O
= 0.4V −20 µA
I
O
Output Drive Current V
CC
= Max, V
O
= 2.25V −30 −112 mA
I
CC
Supply Current V
CC
= Max Outputs HIGH 5 10
Outputs LOW 13 22 mA
Outputs Disabled 11 19
Symbol Parameter Conditions
From (Input)
Min Max Units
To (Output)
t
PLH
Propagation Delay Time V
CC
= 4.5V to 5.5V,
A or B to Y 2 12 ns
LOW-to-HIGH Level Output R
1
= R
2
= 500Ω,
t
PHL
Propagation Delay Time C
L
= 50 pF
A or B to Y 2 9 ns
HIGH-to-LOW Level Output
t
PZH
Output Enable Time to HIGH Level Output G to Y 5 15 ns
t
PZL
Output Enable Time to LOW Level Output G to Y 8 20 ns
t
PHZ
Output Disable Time from HIGH Level Output G to Y 1 10 ns
t
PLZ
Output Disable Time from LOW Level Output G to Y 2 12 ns
