ON Semiconductor MC74HC126AFELG Quad Buffer/Line Driver

The ON Semiconductor MC74HC126AFELG is a high-performance, quad buffer/line driver designed to interface between two logic levels or to drive high-capacity loads with minimal power consumption. This integrated circuit (IC) is part of the HC family, which is well-known for its high noise immunity and low power operation, making it suitable for a wide range of digital applications.

The MC74HC126AFELG features four independent buffer/line drivers with 3-state outputs. Each buffer has its own output enable (OE) input, which controls the state of the corresponding output. When the OE input is low, the output is active and reflects the state of the input. When OE is high, the output is in a high-impedance state, effectively isolating it from the bus or line. This 3-state feature allows for connection to a bus-structured system and is particularly useful in multiplexing applications or when the outputs must be disconnected without powering down the circuit.

Constructed with silicon gate CMOS technology, the MC74HC126AFELG is capable of operation with a wide range of supply voltages, from 2V to 6V, and offers compatibility with TTL-level inputs. This versatility ensures that the device can be used in systems that incorporate both CMOS and TTL technologies, providing a convenient bridge between different logic families.

The device is offered in a flat lead package, specifically the SOEIAJ-16 variant, which is conducive to automated assembly processes and helps in achieving a compact PCB layout. The MC74HC126AFELG operates over the standard temperature range of -55°C to 125°C, making it reliable in various environmental conditions and suitable for industrial-grade applications.

Key applications for the ON Semiconductor MC74HC126AFELG include bus driving, memory address driving, buffer memory address registers, and any other application that requires a high-current, high-voltage interface between different logic levels or systems. With its robust design and ON Semiconductor's commitment to quality, the MC74HC126AFELG is an excellent choice for designers looking to enhance the performance and reliability of their digital systems.