STMicroelectronics M74HC251B1R Multiplexer

The M74HC251B1R is a high-speed CMOS 8-channel multiplexer manufactured by STMicroelectronics, a global leader in semiconductor solutions. This device is designed to select one of the eight data inputs to a single output line through a 3-bit binary address. The M74HC251B1R is part of the HC family, which ensures a robust performance with high noise immunity and low power consumption, making it an excellent choice for a wide range of digital applications.

Featuring a non-inverting 3-state output, the M74HC251B1R provides a high degree of drive capability, allowing for direct connection to a bus-organized system. This output can be disabled, effectively isolating the bus during high impedance mode. Additionally, the multiplexer operates over a broad voltage range from 2V to 6V, providing versatility in various circuit designs and compatibility with TTL levels.

Encased in a DIP-16 package, the M74HC251B1R offers a compact footprint for space-conscious designs without compromising on functionality. The device's pin configuration is thoughtfully laid out to facilitate easy integration into electronic systems. It is also characterized by fast switching times, which are critical in high-speed signal processing applications.

Key features of the M74HC251B1R include:

• Low power dissipation: ICC = 4 μA (max) at TA = 25°C
• High noise immunity: VNIH = VNIL = 28% VCC (min)
• Power down protection is provided on all inputs and outputs
• Pin and function compatible with 74 series 251
• ESD performance:
  • HBM: 1 kV
  • MM: 200V
  • CDM: 1kV

The M74HC251B1R is suitable for a variety of digital applications including data routing, signal gating, and multiplexing functions. This device is also a reliable choice for the implementation in communication systems, computer peripherals, and instrumentation circuits where multiple signal lines need to be managed efficiently.

STMicroelectronics' commitment to quality and reliability ensures that the M74HC251B1R multiplexer meets the stringent requirements of the electronics industry, providing a dependable solution for designers and engineers.