Product Overview: 74HC251N by NXP Semiconductors

The 74HC251N is a high-speed Si-gate CMOS device and is a part of the 74HC family with a wide range of integrated circuits that combine the speed of LSTTL with the low power consumption of CMOS technology. Manufactured by NXP Semiconductors, a trusted name in the electronic components industry, this particular chip is a multiplexer that provides the features of high-noise immunity and low power consumption.

This 8-input multiplexer includes three select inputs (S0, S1, and S2), an enable input (E), eight independent inputs (I0 to I7), and a single output (Y). The device allows one of the eight inputs to be selected by the select inputs and presented at the output, provided the enable input is at a low logic level. When the enable input is high, the output will be in a high-impedance OFF-state, regardless of the select and data inputs, making this device compatible with bus-oriented systems.

The 74HC251N is designed for use in multiplexing applications in digital systems where low power dissipation and high noise immunity are primary design requirements. It is commonly used in data selection and routing, where it can control data flow from multiple sources to a single destination.

Key features of the 74HC251N include:

• Wide operating voltage range (2.0V to 6.0V)
• Low input current (1µA max) for reduced power consumption
• High noise immunity equivalent to the rest of the 74HC family
• Output capability: bus driver
• Non-inverting outputs
• Latch-up performance exceeds 100mA per JESD 78 Class II level A
• ESD protection:
  • HBM JESD22-A114F exceeds 2000V
  • MM JESD22-A115-A exceeds 200V

The device comes in a DIP-16 (Dual In-line Package) which is suitable for a wide range of applications and is easily integrated into various circuits. With its robust design and NXP's commitment to quality, the 74HC251N is a reliable choice for designers who require a high-performance multiplexer for their digital systems.

Whether you are designing consumer electronics, communication devices, or complex computing systems, the 74HC251N from NXP Semiconductors offers the functionality and reliability needed for efficient and effective digital multiplexing.