6247

Supply Voltage
                                                                       36Vdc or +18Vdc V+
Differential Input Voltage
(Note 5)
                                                                       36V
Output Voltage
                                                                       36V
Input Voltage
                                                                       -0.3V to +36V
Input Current
(Note 6)
      (Vin < -0.3Vdc)                                         50mA
Power Dissipation
(Note 2, 3)
       CERDIP                                                   400mW at TA = 125 C
       CERPACK                                                350mW at TA = 125 C
Maximum Junction Temperature
                                                                     175 C
Output Short-Circuit to GND
(Note 4)
                                                                     Continuous
Storage Temperature Range
                                                                     -65 C to +150 C
Operating Temperature Range
                                                                     -55 C to +125 C
Lead Temperature
    (Soldering, 10 seconds)                            260 C
Thermal Resistance
    ThetaJA
        CERDIP     (Still Air)                               103 C/W
                         (500LF/Min Air flow)             65 C/W
        CERPACK  (Still Air                                 183 C/W 
                  (500LF/Min Air flow)                    120 C/W
    ThetaJC
        CERDIP                                                  23 C/W 
        CERPACK                                                23 C/W
 ESD Tolerance
(Note 7)
                                                                      600V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. 

Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is Pdmax = (Tjmax -TA/ThetaJA or the number given in the Absolute Maximum Ratings, whichever is lower. 

Note 3: The low bias dissipation and the ON-OFF characteristic of the outputs keeps the chip dissipation very small (Pd < 100mW), provided the output transistors are allowed to saturate. 

Note 4: Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short to ground, the maximum output current is approximately 20mA independent of the magnitude of V+.  

Note 5: 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 the proper output state. The low input voltage state must not be less than -3.0Vdc (or 0.3Vdc below the magnitude of the negative power supply, if used) (at 25 C).  

The LM139 series consists of four independent precision voltage comparators. These were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possile and the low power supply current drain is independent of the magnitude of the power supply voltage. These comparators LM139 series also have a unique characteristic in that the input common-mode voltage range includes ground, even though operated from a single power supply voltage. 

Application area include limit comparators, simple analog to digital converters, pulse,squarewave and the time delay generators, wide range VCO, MOS clock timers, multivibrators and high voltage digital logic gates. The LM139 series was designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, LM139 series will directly interface with MOS logic-where the low power drain of the LM339 is a distinct advantage over standard comparators.