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DM74AS245
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
Switching Characteristics
over recommended operating free air temperature range
Supply Voltage, V
CC
7V
Input Voltage
Control Inputs 7V
I/O Ports 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 51.5°C/W
M Package 76.0°C/W
Symbol Parameter Min Typ 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 −15 mA
I
OL
LOW Level Output Current 48 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 −1.2 V
V
OH
HIGH Level Output V
CC
= 4.5V, I
OH
= −3 mA 2.4 3.2
Voltage V
CC
= 4.5V, I
OH
= −15 mA 2 2.3 V
I
OH
= −2 mA, V
CC
= 4.5V to 5.5V V
CC
− 2
V
OL
LOW Level Output Voltage V
CC
= 4.5V, I
OL
= Max 0.35 0.55 V
I
I
Input Current at Max V
CC
= 5.5V, V
IN
= 7V,
0.1 mA
Input Voltage (V
IN
= 5.5V for A or B Ports)
I
IH
HIGH Level Input Current V
CC
= 5.5V, Control Inputs 20
µA
V
IN
= 2.7V A or B Ports 70
I
IL
LOW Level Input Current V
CC
= 5.5V, Control Inputs −0.5
mA
V
IN
= 0.4V A or B Ports −0.75
I
O
Output Drive Current V
CC
= 5.5V, V
OUT
= 2.25V −50 −150 mA
I
CC
Supply Current V
CC
= 5.5V Output HIGH 62 97
Output LOW 95 149 mA
3-STATE 79 123
Symbol Parameter Conditions From To Min Max Units
t
PLH
Propagation Delay Time V
CC
= 4.5V to 5.5V,
A or B B or A 2 7.5 ns
HIGH-to-LOW Level Output R
1
= R
2
= 500Ω,
t
PHL
Propagation Delay Time C
L
= 50 pF
A or B B or A 2 7 ns
HIGH-to-LOW Level Output
t
PZL
Output Enable Time to LOW Level G A or B 2 8.5 ns
t
PZH
Output Enable Time to HIGH Level G A or B 2 9 ns
t
PLZ
Output Disable Time from LOW Level G A or B 2 9.5 ns
t
PHZ
Output Disable Time from HIGH Level G A or B 2 5.5 ns
