74LS00 – Quad 2-input NAND gate
74LS00 General Description :
The 74LS00 TTL IC contains four independent gates each of which performs the logic NAND function. The LS means Low Power Schottky. The low power means the IC has a lower power consumption than the original TTL device but with a slower response. The Schottky is used to reduce the response time. Schottky metal-semiconductor junctions are featured in the 74S, 74LS and 74ALS series, where they are employed as clamps in parallel with the collector-base junctions of the bipolar junction transistor (BJT) to prevent their saturation, thereby greatly reducing their turn-off delays.
74LS00 Pin Assignment :
74LS00 pin assignment
7400 Logic Diagram
74LS00 logic diagram
7400 Function table / truth table:
The devices perform the following Boolean function:
74LS00 function table (truth table)
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