STMicroelectronics M74HC85M1R 4-Bit Magnitude Comparator

The M74HC85M1R is a high-speed CMOS 4-bit magnitude comparator designed and manufactured by STMicroelectronics. This integrated circuit is engineered to compare the magnitude of two 4-bit binary, BCD, or other monotonic codes and provide output results. It is a crucial component for systems requiring digital comparison operations such as microcomputers, digital systems, and control systems.

Key Features

• High-Speed Performance: The M74HC85M1R operates at a very high speed, which is characteristic of CMOS technology, ensuring quick comparison times for efficient system performance.
• Low Power Consumption: As a CMOS device, it has the advantage of low power dissipation. This makes it suitable for battery-operated devices and applications where power efficiency is critical.
• Wide Operating Voltage Range: The device can operate at a voltage range from 2V to 6V, providing flexibility in various application environments and compatibility with other logic families when interfaced properly.
• High Noise Immunity: The inherent noise immunity of CMOS technology is present in the M74HC85M1R, making it robust in electrically noisy environments.
• Output Drive Capability: It can drive up to 10 LSTTL loads, which allows it to interface with other logic families without the need for additional buffer components.

Applications

The M74HC85M1R is suited for a wide range of applications that require digital comparison. These include:

• Microprocessor or microcontroller systems
• Logic upgrade for existing TTL systems
• Instrumentation and measurement systems
• Control systems
• Data processing equipment
• Computers and peripherals

Package Information

The M74HC85M1R is offered in a SO-16 package, which is a small outline package that is well-suited for space-constrained applications. The compact size of the SO-16 package allows for high-density mounting on PCBs, which is beneficial for modern compact electronic devices.

Overall, the M74HC85M1R from STMicroelectronics is a reliable and efficient solution for digital magnitude comparison, providing designers with a versatile component that can be easily integrated into a variety of electronic systems.