74HC4011

The 74HC4011 is a high-speed CMOS integrated circuit that implements four independent two-input NAND gates. It is part of the 74HC family, designed for standard logic compatibility with modern digital systems. Each of the four gates has two inputs (A and B) and one output (Y), and the logical function is Y = ¬(A ∧ B). The device is commonly used to build complex logic networks by combining multiple NAND gates.

Pinout and packages: In the common 14-pin DIP form, the pins are arranged as follows: 1A (pin 1), 1B (pin 2), 1Y (pin 3); 2A (pin 4), 2B (pin 5), 2Y (pin 6); GND (pin 7); 3A (pin 8), 3B (pin 9), 3Y (pin 10); 4A (pin 11), 4B (pin 12), 4Y (pin 13); Vcc (pin 14). The device is also offered in surface-mount packages such as SOIC and TSSOP. Availability spans multiple manufacturers, with common variants including DIP, SOIC, and other standard CMOS packages.

Electrical characteristics: The 74HC4011 operates from a supply voltage range of roughly 2 to 6 volts. Output and input levels follow CMOS logic thresholds, with performance that depends on supply voltage, temperature, and load. The HC family is designed for lower power consumption than traditional TTL and is typically not TTL-compatible without a translator; for TTL-compatible interfacing, the 74HCT4011 variant is used.

Applications: The IC is suitable for general-purpose digital logic, gating, signal routing, data path control, and other circuits that require multiple NAND gates in a compact package. It is widely used in education, hobby projects, and commercial electronics where four NAND gates are needed.