SNOSBJ6E – OCTOBER 1999 – REVISED MARCH 2013
Absolute Maximum Ratings
(1) (2)
Supply Voltage, V
+
Differential Input Voltage
Input Voltage
Input Current (V
IN
<−0.3V)
Power Dissipation
PDIP
TO-99
SOIC Package
DSBGA Package
Output Short-Circuit to Ground
Operating Temperature Range
LM393
LM293
LM193/LM193A
LM2903
Storage Temperature Range
Lead Temperature (Soldering, 10 seconds)
Soldering Information
CDIP, PDIP Package Soldering (10 seconds)
SOIC Package
Vapor Phase (60 seconds)
Infrared (15 seconds)
ESD rating (1.5 kΩ in series with 100 pF)
(1)
(2)
(3)
(4)
220°C
1300V
See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount devices.
260°C
215°C
0°C to +70°C
−25°C
to +85°C
−55°C
to +125°C
−40°C
to +85°C
−65°C
to +150°C
+260°C
(6)
(5)
(4)
(3)
36V
36V
−0.3V
to +36V
50 mA
780 mW
660 mW
510 mW
568mW
Continuous
(5)
(6)
Refer to RETS193AX for LM193AH military specifications and to RETS193X for LM193H military specifications.
If Military/Aerospace specified devices are required, please contact the TI Sales Office/Distributors for availability and specifications.
Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode
range, the comparator will provide a proper output state. The low input voltage state must not be less than
−0.3V
(or 0.3V below the
magnitude of the negative power supply, if used).
This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of
the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is
also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the comparators to go
to the V
+
voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive
and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than
−0.3V.
For operating at high temperatures, the LM393 and LM2903 must be derated based on a 125°C maximum junction temperature and a
thermal resistance of 170°C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The
LM193/LM193A/LM293 must be derated based on a 150°C maximum junction temperature. The low bias dissipation and the “ON-OFF”
characteristic of the outputs keeps the chip dissipation very small (P
D
≤100
mW), provided the output transistors are allowed to saturate.
Short circuits from the output to V
+
can cause excessive heating and eventual destruction. When considering short circuits to ground,
the maximum output current is approximately 20 mA independent of the magnitude of V
+
.
Copyright © 1999–2013, Texas Instruments Incorporated
3
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