PHILIPS NE521 High-speed dual-differential comparator/sense amp handbook

NE521 is a high-speed dual-differential comparator/sense amplifier with features including 12ns maximum guaranteed propagation delay, 20µA maximum input bias current, TTL compatible strobes and outputs, and large common-mode input voltage range. It is suitable for applications such as MOS memory sense amplifier, A-to-D conversion, and high-speed line receiver.