dm74ls249 National Semiconductor Corporation, dm74ls249 Datasheet - Page 2

• Manufacturer Part Number: dm74ls249
• Description: Bcd To 7-segment Decoder With Open-collector Outputs
• Manufacturer: National Semiconductor Corporation

Symbol
V
V
I
V
I
I
I
I
I
Absolute Maximum Ratings
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Storage Temperature Range
Recommended Operating Conditions
Electrical Characteristics
Note 1 All typicals are at V
Note 2 Not more than one output should be shorted at a time and the duration should not exceed one second
CEX
I
IH
IL
OS
CC
I
OH
OL
Symbol
V
V
V
I
I
T
OH
OL
CC
IH
IL
A
Input Clamp Voltage
High Level Output Voltage
(BI RBO)
High Level Output Current
(a thru g)
Low Level Output Voltage
Input Current
Input Voltage
High Level Input Current
Low Level Input Current
Short Circuit Output Current
Supply Current
Parameter
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current (BI RBO)
Low Level Output Current
Free Air Operating Temperature
CC
e
5V T
Max
A
e
Parameter
25 C
b
over recommended operating free air temperature range (unless otherwise noted)
65 C to
V
V
V
V
V
V
I
V
V
V
V
V
0 C to
OL
CC
CC
IL
CC
CC
IH
CC
CC
CC
CC
CC
(Note)
e
e
e
e
e
e
e
e
e
e
e
e
a
Max
4 mA V
Min
a
Min I
Min I
Min V
Min I
Max V
Max V
Max V
Max (Note 2)
Max V
150 C
70 C
7V
7V
Conditions
I
OH
OL
O
e b
CC
I
I
I
IN
e
e
e
e
e
e
e
2
e
7V
2 7V
0 4V
5 5V
Max
18 mA
Max
4 5V
Min
beyond which the safety of the device cannot be guaran-
teed The device should not be operated at these limits The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation
Note The ‘‘Absolute Maximum Ratings’’ are those values
4 75
Min
2
0
Inputs
BI RBO
Nom
5
b
Min
2 7
0 3
(Note 1)
0 35
0 25
Typ
3 4
b
Max
5 25
0 8
70
0 25
8
b
b
b
b
Max
250
0 5
0 4
0 1
20
15
1 5
0 4
1 2
2 0
Units
mA
mA
V
V
V
C
Units
mA
mA
mA
mA
mA
mA
V
V
V