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LM88 - Factory Programmable Dual Remote-Diode Thermostat

Datasheet Summary

Description

The LM88 is a dual remote-diode temperature sensor with 3 digital comparators.

The LM88 has 3 open-drain outputs (O_SP0, O_SP1 and O_CRIT) that can be used as interrupts or to signal system shutdown.

The digital comparators can be factory programmed to make a greater than or less than comparison.

Features

  • n 2 external remote diode input channels n 3 digital comparator outputs, 1 per remote diode and one T_CRIT common to both n Factory programmable greater than or less than comparisons n 1˚C comparator hysteresis n 2 setpoints, T_SP0 and T_SP1, factory programmable in 4˚C intervals n 1 setpoint, T_CRIT, factory programmable in 1˚C intervals n Active Low open-drain digital outputs n 8-pin mini-SO plastic package Key Specifications j Power Supply Voltage j Power Supply Current j LM88 Temperature Ra.

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Datasheet Details

Part number LM88
Manufacturer National Semiconductor
File Size 196.62 KB
Description Factory Programmable Dual Remote-Diode Thermostat
Datasheet download datasheet LM88 Datasheet
Additional preview pages of the LM88 datasheet.

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Full PDF Text Transcription

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LM88 Factory Programmable Dual Remote-Diode Thermostat August 2001 LM88 Factory Programmable Dual Remote-Diode Thermostat General Description The LM88 is a dual remote-diode temperature sensor with 3 digital comparators. The LM88 has 3 open-drain outputs (O_SP0, O_SP1 and O_CRIT) that can be used as interrupts or to signal system shutdown. The digital comparators can be factory programmed to make a greater than or less than comparison. When programmed for a greater than comparison outputs: O_SP0 and O_SP1 activate when the temperatures measured by D0 or D1 exceed the associated setpoints of T_SP0 or T_SP1. O_CRIT activates when the temperature measured by either D0 or D1 exceeds setpoint T_CRIT. T_CRIT can be set at 1˚C intervals from −40˚C to +125˚C.
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