ON Semiconductor MC74HC251N: 8-Input Multiplexer with 3-State Outputs

The MC74HC251N is a high-performance integrated circuit designed and manufactured by ON Semiconductor, a leader in energy-efficient innovations. This device is a member of the high-speed CMOS family and features an 8-input multiplexer with 3-state outputs that allow for connection to a common bus line. It is particularly well-suited for implementing non-inverting digital multiplexers with memory, data routing, and data selection applications.

The multiplexer is designed to select one of the eight data inputs as determined by the select inputs (A, B, and C) and direct it to the output. An additional input, Enable (E), is used to control the state of the output. When Enable (E) is high, the outputs are in the high-impedance state, effectively disconnecting the output from the bus line. This feature allows for multiple devices to be connected to the same bus without interference, making it ideal for bus-oriented systems.

Key features of the MC74HC251N include:

• Logic Type: CMOS
• Operating Voltage Range: 2V to 6V
• Current - Output High, Low: 5.2mA, 5.2mA
• Propagation Delay Time: 195ns (Max) at 6V
• Operating Temperature: -55°C to 125°C

This device is compatible with all standard logic families due to its high noise immunity and low power consumption. Additionally, the MC74HC251N is TTL compatible at 5V operation. It is offered in a standard 16-pin DIP (Dual In-line Package), making it easy to integrate into a wide range of electronic systems.

With its robust design and ON Semiconductor's commitment to quality, the MC74HC251N is a reliable and versatile choice for designers looking to implement efficient multiplexing solutions in their digital projects. Its ability to interface with other high-speed CMOS logic systems makes it a highly adaptable component for complex digital environments.

Whether you are developing data routing applications, memory systems, or need an efficient way to manage digital signals, the ON Semiconductor MC74HC251N provides a high-performance solution that engineers can trust.