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DM74ALS253
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 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. All typical values are measured at V
CC
= 5V, T
A
= 25°C.
Supply Voltage, V
CC
7V
Input Voltage 7V
Voltage Applied to Disabled 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 78.0°C/W
M Package 107.0°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
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
IN
= −18 mA −1.5 V
V
OH
HIGH Level V
CC
= 4.5V, I
OH
= Max 2.4 3.2
V
Output Voltage I
OH
= 400 µA, V
CC
= 4.5V to 5.5V V
CC
− 2
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
I
I
Input Current at Maximum input Voltage V
CC
= 5.5V, V
IN
= 7V 0.1 mA
I
IH
HIGH Level Input Current V
CC
= 5.5V, V
IN
= 2.7V 20 µA
I
IL
LOW Level Input Current V
CC
= 5.5V, V
IN
= 0.4V −0.1 mA
I
O
Output Drive Current V
CC
= 5.5V, V
OUT
= 2.25V −30 −112 mA
I
OZH
OFF-State Output Current, HIGH Bias V
CC
= 5.5V, V
OUT
= 2.7V 20 µA
I
OZL
OFF-State Output Current, LOW Bias V
CC
= 5.5V, V
OUT
= 0.4V −20 µA
I
CC
Supply Current V
CC
= 5.5V Output HIGH 6.5 12
Output LOW 6.5 12 mA
Output Disabled 7.5 14
Symbol Parameter Conditions
From (Input)
Min Max Units
To (Output)
t
PLH
Propagation Delay Time V
CC
= 4.5V to 5.5V
Select to Y 5 21 ns
LOW-to-HIGH Level Output C
L
= 50 pF
t
PHL
Propagation Delay Time R
L
= 500Ω
Select to Y 5 21 ns
HIGH-to-LOW Level Output
t
PLH
Propagation Delay Time
Data to Y 2 10 ns
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
Data to Y 3 14 ns
HIGH-to-LOW Level Output
t
PZH
Output Enable Time to HIGH Level Output Output Control to Y 3 14 ns
t
PZL
Output Enable Time to LOW Level Output Output Control to Y 4 16 ns
t
PHZ
Output Disable Time from HIGH Level Output Output Control to Y 2 10 ns
t
PLZ
Output Disable Time from LOW Level Output Output Control to Y 2 14 ns
