SN74HC161DR 4-Bit Synchronous Binary Counter IC | High-Speed CMOS | SOIC-16 SMD

Description

The SN74HC161DR is a high-speed, 4-bit synchronous binary counter designed for counting, timing, and frequency division applications. As a synchronous device, all flip-flop outputs change state simultaneously in response to the positive-going edge of the clock signal, which eliminates the output spikes commonly associated with ripple counters. It features internal look-ahead logic for high-speed counting and multiple enable inputs for easy cascading in multi-stage applications.

Built using advanced silicon-gate CMOS technology, this IC combines the high-speed operation of standard Schottky TTL with the low power consumption and high noise immunity of the HC logic family. It includes an asynchronous master reset (clear) and parallel-load capability, making it highly versatile for programmable count sequences and state machine designs. The SOIC-16 surface-mount package is optimized for high-density PCB layouts.

Note: Product images are provided for reference only. The actual product may vary in appearance, manufacturer marking, or logo depending on stock availability.

Features

• 4-bit synchronous binary counting
• Internal look-ahead for high-speed counting
• Asynchronous master reset (clear)
• Fully synchronous parallel load
• Multiple enable inputs for easy cascading
• High-speed CMOS (HC) technology
• Wide operating voltage range (2V to 6V)
• Compact SOIC-16 SMD package

Benefits

• Synchronous operation prevents output glitches typical in ripple counters
• Flexible design supports programmable count lengths
• Low power dissipation suitable for energy-sensitive systems
• High noise immunity for reliable operation in noisy industrial environments
• Easy integration into larger counter/timer architectures

Applications

• Programmable Frequency Dividers
• Digital Timers and Counters
• State Machine Controller Design
• Address Counter for Memory Modules
• Data Acquisition Systems
• Embedded System Design
• Industrial Automation and Instrumentation

Package Includes

• 1 x SN74HC161DR 4-Bit Synchronous Binary Counter IC (SOIC-16 SMD)

Specifications