Datasheet

LM87
SNAS034J –APRIL 2000–REVISED MARCH 2013 www.ti.com
Note: Setting all ones to the high limits for voltages and fans (0111 1111 binary for temperature) means
interrupts will never be generated except the case when voltages go below the low limits.
For voltage input high limits, the device is doing a greater than comparison. For low limits, however, it is doing a
less than or equal to comparison.
Typical Application
In this PC application the LM87 monitors temperature, fan speed for 2 fans, and 6 power
supply voltages. It also monitors an optical chassis intrusion detector.
The LM87 provides a DAC output that can be used to control fan speed.
Figure 16.
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