DM74ALS645AWM View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
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DM74ALS645AWM Datasheet PDF : 4 Pages
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Absolute Maximum Ratings(Note 1)
Supply Voltage
Input Voltage;
Control Inputs
I/O Ports
Operating Free Air Temperature Range
Storage Temperature Range
Typical θJA
N Package
M Package
7V
7V
5.5V
0°C to +70°C
−65°C to +150°C
53.0°C/W
72.0°C/W
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
Symbol
VCC
VIH
VIL
IOH
IOL
TA
Parameter
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Operating Free Air Temperature Range
Min
Typ
4.5
5
2
0
Electrical Characteristics
Over Recommended Free Air Temperature Range
Symbol
Parameter
Test Conditions
Min
VIC
Input Clamp Voltage
VCC = Min, II = −18 mA
VOH
HIGH Level Output Voltage
VCC = 4.5 to 5.5V
IOH = −0.4 mA
VCC = Max
IOH = − 3 mA
IOH = Max
VOL
LOW Level Output Voltage
VCC = Min
IOL = 12 mA
IOL = 24 mA
II
Input Current at
VCC = Max
I/O Ports, VI = 5.5V
Maximum Input Voltage
Control Inputs, VI = 7V
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V (Note 2)
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V (Note 2)
IO
Output Drive Current
VCC = Max, VO = 2.25V
ICC
Supply Current
VCC = Max
Outputs HIGH
Outputs LOW
Outputs Disabled
Note 2: For I/O ports, IIH and IIL parameters include the 3-STATE output current (IOZL and IOZH).
VCC − 2
2.4
2
−30
Switching Characteristics
Over Recommended Operating Free Air Temperature Range
Symbol
Parameter
From
(Input)
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
A or B
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
A or B
tPZH
Output Enable Time to HIGH Level Output
G
tPZL
Output Enable Time to LOW Level Output
G
tPHZ
Output Disable Time from HIGH Level Output
G
tPLZ
Output Disable Time from LOW Level Output
G
To
(Output)
B or A
B or A
Conditions
VCC = 4.5 to 5.5V,
CL = 50 pF,
R1 = R2 = 500Ω
A or B
A or B
A or B
A or B
Max
5.5
0.8
−15
24
70
Typ
3.2
0.25
0.35
30
36
38
Min
3
3
5
5
2
4
Units
V
V
V
mA
mA
°C
Max
Units
−1.5
V
V
0.4
V
0.5
100
µA
100
20
µA
−100
µA
−112
mA
45
55
mA
58
Max
Units
10
ns
10
ns
20
ns
20
ns
10
ns
15
ns
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