DM54LS240 Datasheet, PDF (2/6 Pages) National Semiconductor (TI) – Octal TRI-STATE Buffers/Line Drivers/Line Receivers

Absolute Maximum Ratings (Note)
If Military Aerospace specified devices are required
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Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
DM54LS 54LS
b55 C to a125 C
DM74LS
0 C to a70 C
Storage Temperature Range
b65 C to a150 C
Note The ‘‘Absolute Maximum Ratings’’ are those values
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
Recommended Operating Conditions
Symbol
V_CC
V_IH
V_IL
I_OH
I_OL
T_A
Parameter
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
DM54LS240 241
Min
Nom
Max
45
5
55
2
07
b12
12
b55
125
DM74LS240 241
Min
Nom
Max
4 75
5
5 25
2
08
b15
24
0
70
Units
V
V
V
mA
mA
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
(Note 1)
Max
Units
V_I
HYS
Input Clamp Voltage
Hysteresis (V_Ta b V_Tb)
Data Inputs Only
V_CC e Min I_I e b18 mA
V_CC e Min
b1 5 V
02 04
V
V_OH
V_OL
High Level Output Voltage
Low Level Output Voltage
V_CC e Min V_IH e Min
V_IL e Max I_OH e b1 mA
V_CC e Min V_IH e Min
V_IL e Max I_OH e b3 mA
V_CC e Min V_IH e Min
V_IL e 0 5V I_OH e Max
V_CC e Min
V_IL e Max
V_IH e Min
I_OL e 12 mA
I_OL e Max
DM74
27
DM54 DM74 _{2 4 3 4}
DM54 DM74 ₂
DM74
DM54
DM74
V
04
04 V
05
I_OZH
I_OZL
Off-State Output Current
High Level Voltage Applied
Off-State Output Current
Low Level Voltage Applied
V_CC e Max
V_IL e Max
V_IH e Min
V_O e 2 7V
V_O e 0 4V
20 mA
b20 mA
I_I
Input Current at Maximum V_CC e Max V_I e 7V (DM74)
Input Voltage
V_I e 10V (DM54)
0 1 mA
I_IH
High Level Input Current V_CC e Max V_I e 2 7V
20 mA
I_IL
Low Level Input Current V_CC e Max V_I e 0 4V
b0 2 mA
I_OS
Short Circuit Output Current V_CC e Max (Note 2)
b40
b225 mA
I_CC
Supply Current
V_CC e Max
Outputs Open
Outputs High
Outputs Low
LS240 LS241
LS240
13
23
26
44
LS241
27
46 mA
Outputs Disabled LS240
29
50
LS241
32
54
Note 1 All typicals are at V_CC e 5V T_A e 25 C
Note 2 Not more than one output should be shorted at a time and the duration should not exceed one second
2