SN74HC21DR TI Gates and Inverters

The SN74HC21DR is a dual 4‑input positive‑AND gate from Texas Instruments, containing two independent AND gates in a 14‑pin SOIC package . Operates from 2 V to 6 V with 5.2 mA output drive per channel, buffered inputs, and a wide -40°C to +85°C temperature range . Verify supply voltage within 2 V–6 V; confirm logic levels (low: 0.5 V–1.8 V, high: 1.5 V–4.2 V) match your system; note 2 µA max quiescent current and 19 ns propagation delay at 6 V, 50 pF for high‑speed designs . Ideal for address decoding in microprocessor systems, multiplexer/demultiplexer control logic, arithmetic logic unit (ALU) circuits, digital data processing, and control systems requiring multi‑input logic operations . In stock at HL Electronics – request a quote for fast delivery.