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BUY DM74LS74AN https://www.utsource.net/itm/p/111954.html
Dual Positive-Edge-Triggered D Flip-Flops with Preset, Clear and Complementary Outputs
Description: The DM74LS74AN is a dual D-type flip-flop with individual data (D) and clock (CP) inputs, set (S) and reset (R) inputs, and complementary Q and Q outputs. Features: Positive-edge triggered Outputs source/sink 24 mA Fanout of 2 LS-TTL loads Direct Clear Low power TTL compatible High noise immunity High speed High output drive capability High noise immunity Applications: Counters Registers Shift registers Frequency dividers Pulse generators Data storage (For reference only)