BUY HCF4013BE https://www.utsource.net/itm/p/30929.html
NAND GATES
Description: The HCF4013BE is a dual 4-input NAND Schmitt trigger logic gate. Features: High noise immunity Low power consumption Low input current High noise immunity High speed operation High output current High input impedance Applications: Pulse and timing circuits Clock and oscillator circuits Flip-flop circuits Level detectors Data selectors Digital logic circuits
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