74LS14 Datasheet, PDF (2/6 Pages) National Semiconductor (TI) – Hex Inverters with Schmitt Trigger Inputs

Absolute Maximum Ratings (Note)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
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_Ta
V_Tb
HYS
I_OH
I_OL
T_A
Parameter
Supply Voltage
Positive-Going Input
Threshold Voltage (Note 1)
Negative-Going Input
Threshold Voltage (Note 1)
Input Hysteresis (Note 1)
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
54LS14
Min
Nom
Max
45
5
55
15
16
20
06
08
11
04
08
b0 4
4
b55
125
DM74LS14
Min
Nom
Max
4 75
5
5 25
14
16
19
05
08
1
04
08
b0 4
8
0
70
Units
V
V
V
V
mA
mA
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
V_I
Input Clamp Voltage
V_OH
High Level Output
Voltage
V_CC e Min I_I e b18 mA
V_CC e Min I_OH e Max
54LS
25
V_IL e Max
DM74
27
V_OL
Low Level Output
Voltage
V_CC e Min I_OL e Max
V_IH e Min
54LS
DM74
V_CC e Min I_OL e 4 mA
DM74
I_Ta
Input Current at
V_CC e 5V V_I e V_Ta
DM74
Positive-Going Threshold
I_Tb
Input Current at
V_CC e 5V V_I e V_Tb
DM74
Negative-Going Threshold
I_I
Input Current Max
V_CC e Max V_I e 7V
DM74
Input Voltage
V_CC e Max V_I e 10 0V
54LS
I_IH
High Level Input Current
V_CC e Max V_I e 2 7V
I_IL
Low Level Input Current
V_CC e Max V_I e 0 4V
I_OS
Short Circuit
Output Current
V_CC e Max
(Note 3)
54LS
DM74
b20
b20
I_CCH
Supply Current with
Outputs High
V_CC e Max
I_CCL
Supply Current with
Outputs Low
V_CC e Max
Note 1 V_CC e 5V
Note 2 All typicals are at V_CC e 5V T_A e 25 C
Note 3 Not more than one output should be shorted at a time and the duration should not exceed one second
Typ
(Note 2)
34
34
0 25
0 35
0 25
b0 14
b0 18
86
12
Max
b1 5
04
05
04
01
20
b0 4
b100
b100
16
21
Units
V
V
V
mA
mA
mA
mA
mA
mA
mA
mA
2