Logic Gates — NAND, AND, OR, NOT, XOR ICs

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Logic Gate ICs — 74HC, 74HCT, 74LS & CD4000 Series Logic gate ICs are the fundamental building blocks of all digital electronics — from simple combinational circuits to complex sequential systems. This collection covers the complete range of standard logic families: the modern 74HC/74HCT series (2V–6V CMOS, high-speed), the legacy 74LS series (5V TTL, for repair and restoration), and the classic CD4000 series (3V–15V CMOS, wide supply range). Whether you’re designing a new digital circuit, repairing legacy equipment, or learning digital electronics, you’ll find the exact gate IC you need here. Gate Types Available NAND Gates: 74HC00, 74LS00, CD4011 — universal gate, SR latches, oscillators AND Gates: 74HC08, 74LS08 — signal gating, clock enable, combinational logic OR Gates: 74HC32, 74LS32 — interrupt combining, signal merging Inverters / NOT Gates: 74HC04, 74HC14 (Schmitt-trigger) — signal inversion, debounce, RC oscillators NOR Gates: 74HC02, CD4001 — universal gate, SR latches XOR Gates: 74HC86 — parity generation, comparators, adders Sequential & Bus Logic Shift Registers: 74HC595 (serial-out), 74HC165 (serial-in) — GPIO expansion Flip-Flops: 74HC74 (D-type), 74HC73 (JK) — data registers, frequency dividers Counters: 74HC393, 74HC191, 74HC192 — event counting, frequency division Bus Transceivers: 74HC245, 74HCT245 — bidirectional bus buffering, level shifting Multiplexers: 74HC4051 (8-ch analog), 74HC4067 (16-ch) — signal routing, ADC expansion Logic Family Selection Guide 74HC: 2V–6V, CMOS inputs, low power — best for new designs with Arduino, ESP32, STM32 74HCT: 5V, TTL-compatible inputs — best for interfacing 3.3V logic with 5V TTL systems 74LS: 5V TTL only — for legacy circuit repair and vintage electronics restoration CD4000: 3V–15V CMOS — for battery-powered circuits and high-voltage logic applications All ICs are new, original, and RoHS compliant. Available in DIP (through-hole) and SOP (SMD) packages.