MC14049B

The MC14049B is a hex inverter buffer manufactured by onsemi, designed for high-speed digital applications. It consists of six independent inverting buffers, each capable of driving up to 500 µA of load current at a supply voltage range of 3 V to 15 V. The device operates with low power consumption and offers excellent noise immunity, making it ideal for use in environments where signal integrity is critical. This CMOS-based IC features a wide operating temperature range from -55°C to +125°C, ensuring reliable performance across diverse industrial and automotive conditions. Its input and output logic levels are compatible with standard TTL and CMOS families, enabling seamless integration into mixed-signal systems. The propagation delay per stage is typically less than 100 ns at 5 V supply, contributing to fast switching speeds essential for timing-critical circuits. One of the key characteristics of the MC14049B is its high input impedance and low output impedance, which allows for efficient signal buffering without loading the driving source. Additionally, the device includes built-in protection against electrostatic discharge (ESD), enhancing robustness during handling and operation. Each inverter can be used independently or combined in parallel for increased drive strength, offering flexibility in circuit design. Common applications include signal conditioning in data acquisition systems, level shifting in microcontroller interfaces, clock distribution in digital logic networks, and as a general-purpose buffer in consumer electronics, industrial control units, and medical equipment. It is particularly suited for use in battery-powered devices due to its low quiescent current—typically under 1 µA at room temperature—which extends operational life. The MC14049B is available in a compact 14-pin DIP package, facilitating easy mounting on printed circuit boards. Its pinout is standardized, simplifying layout and reducing design time. With a proven track record in reliability and performance, this component remains a preferred choice for engineers seeking dependable, low-cost solutions in digital signal processing and interface applications.