ON Semiconductor MC74AC161DR2 Integrated Circuit

The ON Semiconductor MC74AC161DR2 is a high-performance, synchronous 4-bit binary counter integrated circuit, designed to provide reliable and efficient counting operations in a wide array of digital applications. Manufactured with advanced CMOS technology, this counter features a direct clear input and a synchronous load capability, making it a versatile choice for designers looking for a precise and programmable counting solution.

This integrated circuit is part of the MC74AC series, which is renowned for its high-speed operation and compatibility with TTL (Transistor-Transistor Logic) levels. With its capability to operate at a voltage range of 2V to 6V, the MC74AC161DR2 offers flexibility for use in various systems without compromising on performance.

Key Features:

• High-speed counting: The MC74AC161DR2 can perform at clock frequencies up to 145 MHz (typical) at 5V, making it suitable for high-speed applications.
• Synchronous load: Users can load the counter with a 4-bit binary word synchronously with the system clock, allowing for precise control over the counting sequence.
• Asynchronous clear: A direct clear input allows the counter to be reset asynchronously, which is useful for immediate initialization or emergency stop operations.
• Output Carry Look-Ahead for easy cascading: This feature facilitates the connection of multiple counters in series, simplifying the design of multi-bit counting configurations.
• Edge-triggered clock: The counter advances on the rising edge of the clock signal, providing a clear and predictable counting behavior.

Applications:

The MC74AC161DR2 is ideal for a broad range of applications that require precise counting, including:

• Industrial control systems
• High-speed timers and counters
• Frequency dividers
• Processors and microcontrollers
• Sequential state machines

With its robust design and advanced features, the ON Semiconductor MC74AC161DR2 binary counter is a reliable component for any digital system requiring accurate and high-speed counting capabilities. Its industry-standard SOIC-16 packaging ensures compatibility with standard surface-mount assembly processes, making it a convenient and practical choice for modern electronic designs.