The LP239 is obsolete

and is no longer supplied.

LP239, LP339, LP2901

LOW POWER QUAD DIFFERENTIAL COMPARATORS

SLCS004B − OCTOBER 1987 − REVISED SEPTEMBER 2004

2

POST OFFICE BOX 655303

schematic diagram (each comparator)

5

µA

IN+

IN−

GND

OUT

6

µA

0.2

µA

VCC

0.2

µA

36 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±36 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−0.3 V to 36 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Duration of output short-circuit to ground (see Note 4)

Unlimited

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total dissipation (see Note 5)

See Dissipation Rating Table

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−25

°C to 85°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LP339

0

°C to 70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LP2901

−40

°C to 85°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

86

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

N package

80

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

150

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature range 1,6 mm (1/16 inch) from case for 60 seconds: J package

300

°C

. . . . . . . . . . . . . . . .

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated in the recommended operating conditions is not implied.

Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. All voltage values, except differential voltages, are with respect to the network ground.

2. Differential voltages are at IN+ with respect to IN −.

3. This input current only exists when the voltage at any of the inputs is driven negative. The current flows through the collector-base

junction of the input clamping device. In addition to the clamping device action, there is lateral n-p-n parasitic transistor action. This

action is not destructive, and normal output states are reestablished when the input voltage returns to a value more positive than

− 0.3 V at TA = 25°C.

4. Short circuits between outputs to VCC can cause excessive heating and eventual destruction.

5. If the output transistors are allowed to saturate, the low-bias dissipation and the on-off characteristics of the outputs keep the

dissipation very small (usually less than 100 mW).

6. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable

ambient temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability.

7. The package thermal impedance is calculated in accordance with JESD 51-7.

DISSIPATION RATING TABLE

PACKAGE

TA ≤ 25°C

POWER RATING

DERATING FACTOR

ABOVE TA = 25°C

TA = 70°C

POWER RATING

TA = 85°C

POWER RATING

J

1025 mW

8.2 mW/

°C

656 mW

533 mW