Part Number	LM57
Description	Resistor-Programmable Temperature Switch And Analog Temperature Sensor
Info	LM57 Resistor-Programmable Temperature Switch and .
Manufacture	National Semiconductor Corporation
for PC	Download LM57 Datasheet

Part Number	LM57-Q1
Description	Resistor-Programmable Temperature Switch and Analog Temperature Sensor
Info	Product Folder Sample & Buy Technical Documents .
Manufacture	etcTI
for PC	Download LM57-Q1 Datasheet