Part # LM1042 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM1042 Fluid Level Detector


Part Details:

LM1042 February 1995 Fluid LM1042 Fluid Level Detector Level General Description Features The LM1042 uses the thermal-resistive probe technique to Y Selectable thermal-resistance or linear probe inputs measure the level of non-flammable fluids An output is pro- Y Control circuitry for thermal-resistive probe vided proportional to fluid level and single shot or repeating Y Single-shot or repeating measurements Detector measurements may be made All supervisory requirements Y Switch on reset and delay to avoid transients to control the thermal-resistive probe including short and Y Output amplifier with 10 mA source and sink capability open circuit probe detection are incorporated within the de- Y Short or open probe detection vice A second linear input for alternative sensor signals Y a 50V transient protection on supply and control input may also be selected Y 7 5V to 18V supply range Y Internally regulated supply Y b40 C to a80 C operation Block Diagram TL H 8709 ­ 1 C1995 National Semiconductor Corporation TL H 8709 RRD-B30M115 Printed in U S A Absolute Maximum RatingsIf Military Aerospace specified devices are required Output Current Pin 11 (source) 25 mA please contact the National Semiconductor Sales Output Current Pin 16 g 10 mA Office Distributors for availability and specifications Operating Temperature Range b40 C to a80 C Supply Voltage VCC 32V Storage Temperature Range b55 C to a150 C


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LM1042.pdf Datasheet