STMicroelectronics M74HC161B1R Integrated Circuit

The M74HC161B1R is a high-speed CMOS 4-bit binary counter integrated circuit, expertly crafted by STMicroelectronics. This precision-engineered component is designed to operate with a supply voltage ranging from 2V to 6V, making it a versatile choice for a wide range of digital applications. Known for its robust performance and compatibility with TTL outputs, this IC is a staple in the electronics industry for counting operations.

Key Features

• High-Speed Performance: The M74HC161B1R is built using silicon gate CMOS technology, which guarantees fast count operations, making it suitable for high-speed systems.
• Low Power Consumption: It has a low power dissipation, with a typical value of 20µA, ensuring energy efficiency in your applications.
• Wide Operating Voltage Range: With an operating voltage range from 2V to 6V, this counter can be used in various environments and is compatible with a broad range of other digital components.
• Synchronous Reset: The inclusion of a synchronous reset function allows for the counter to be reset on the fly, providing precise control over counting operations.
• Output Capability: The counter comes with standard outputs capable of driving 10 LSTTL loads, which means it can easily interface with other logic families and drive multiple inputs.
• Pin and Function Compatibility: This IC is pin-to-pin compatible with standard 161B counters, making it a direct replacement for existing designs without the need for board modifications.

Applications

The M74HC161B1R is ideal for a multitude of applications that require precise and reliable counting. It is commonly used in:

• Frequency counters
• Time-division multiplexing
• Programmable dividers
• State machines
• Alarm systems

With its combination of high-speed operation, low power consumption, and wide voltage range, the M74HC161B1R from STMicroelectronics is an excellent choice for designers looking to incorporate a reliable and efficient binary counter into their digital systems. Whether for industrial, consumer, or automotive applications, this IC delivers consistent performance and quality that engineers have come to expect from STMicroelectronics.