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"Buy LM311N: Comparator Single &amp;plusmn;15 Volt 30 Volt 8 Pin Plastic DIP Rail (Analog/Linear) (Manufacturer: Major Brands) from Jameco Electronics. Lowest prices guaranteed. Same-day shipping."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.jameco.com/1/1/218-lm311n-comparator-single-15-volt-30-volt-8-pin-plastic-dip-rail-analog-linear.html>