NE521 series datasheets. Manufacturer: ON Semiconductor.

NE521D High-Speed, Dual-Differential, Comparator/Sense Amp Datasheet*) NE521DG HI-SPEED DUAL-DIFFERENTIA Datasheet*) NE521DR2 High-Speed, Dual-Differential, Comparator/Sense Amp Datasheet*) NE521DR2G HI-SPEED DUAL-DIFFERENTIA Datasheet*) NE521N High-Speed, Dual-Differential, Comparator/Sense Amp Datasheet*) NE521NG HI-SPEED DUAL-DIFFERENTIA Datasheet*) There are other manufacturers for this components. For more information please check NE521 (Philips Semiconductors)

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