MC14071B

The MC14071B is a high-performance quad 2-input OR gate integrated circuit manufactured by onsemi, designed for use in digital logic applications. It operates from a supply voltage range of 3 V to 15 V, making it suitable for both low-power and standard-voltage systems. The device features low power consumption and high noise immunity, ensuring reliable operation in electrically noisy environments. Each of the four independent OR gates within the MC14071B has two inputs and one output, allowing for flexible implementation of logical OR functions in complex digital circuits. The propagation delay time is typically less than 100 ns at 5 V, enabling fast signal processing in timing-critical applications. The output stage is capable of driving up to 10 LSTTL loads, providing robust interfacing with other digital components such as microcontrollers, memory devices, and logic arrays. This IC is fabricated using CMOS technology, which contributes to its low quiescent current—typically under 1 µA per gate—and excellent static power efficiency. Its wide operating temperature range, from -55°C to +125°C, makes it ideal for industrial, automotive, and military-grade applications where environmental conditions are extreme or unpredictable. The MC14071B is commonly used in data acquisition systems, control logic circuits, alarm systems, and multiplexing applications where multiple signals must be combined logically. It also serves well in computer peripherals, consumer electronics, and communication equipment where reliable, low-cost logic functionality is required. Pin compatibility with the industry-standard 74HC4071 allows for easy substitution in existing designs without major layout changes. The package type is a 14-pin DIP (Dual In-line Package), facilitating through-hole mounting and prototyping on breadboards or printed circuit boards. Additionally, the device includes internal ESD protection to prevent damage from electrostatic discharge during handling or operation. In summary, the MC14071B offers a balance of performance, reliability, and versatility, making it an essential component in modern digital systems requiring multiple OR gate functions with minimal power usage and high operational stability.