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For sale is 2pcs LM311P comparator iC. The output levels are compatible with most TTL and MOS circuits. All inputs and outputs can be isolated from system ground. The outputs can drive loads referenced to ground, VCC+ or VCC-.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.