74HC90 (Decade, Divided by twelve AND binary counter- 4-BIT Binary Counter)

Overview

The 74HC90 is a versatile 4-bit ripple counter from the high-speed CMOS family, offering both decade (divide-by-10) and divide-by-12 counting modes, as well as a binary counter configuration. It integrates a divide-by-two section and a divide-by-five (or divide-by-eight) section, which can be cascaded to achieve various counting sequences. This IC is ideal for frequency division, time delay generation, and digital counting applications in embedded systems and educational projects.

Key Features

• Multiple Counting Modes: Configurable as a decade counter (divide-by-10), divide-by-12 counter, or 4-bit binary counter.
• High-Speed CMOS Technology: Combines low power consumption with high noise immunity.
• Dual Clock Inputs: Separate clock inputs for the divide-by-two and divide-by-five sections, allowing flexible cascading.
• Master Reset: Asynchronous reset inputs (MR1, MR2) to clear the counter to zero.
• Edge-Triggered: Counts on the HIGH-to-LOW transition of the clock signal.
• Wide Operating Voltage: Supports 2V to 6V supply voltage, compatible with TTL logic levels.
• Standard Pinout: DIP-14 package, easy to use on breadboards and PCBs.

Technical Specifications

• Supply Voltage (Vcc): 2V to 6V
• Input Voltage (Vin): 0V to Vcc
• Output Current (Ioh/Iol): ±4mA at 5V
• Clock Frequency (max): 35MHz (typical at 5V)
• Propagation Delay: 16ns (typical at 5V, CL=50pF)
• Operating Temperature: -40°C to +125°C
• Package: 14-pin DIP
• Logic Family: HC (High-Speed CMOS)

Applications & Use Cases

• Frequency Division: Divide clock signals by 10, 12, or 16 in digital circuits.
• Digital Counters: Build event counters for automation and instrumentation.
• Timing Circuits: Generate precise time delays in microcontroller projects.
• Education: Ideal for learning digital logic and counter design in university labs.
• Robotics: Use for encoder pulse counting or motor speed measurement.
• DIY Electronics: Create frequency meters, stopwatches, and other hobbyist projects.

What's Included

• 1x 74HC90 Decade / Divide-by-12 / Binary Counter IC (DIP-14)

Compatibility

• Logic Levels: Compatible with 74LS, 74HC, and 4000 series logic families when voltage levels are matched.
• Microcontrollers: Works with 3.3V and 5V MCUs (e.g., Arduino, ESP32, PIC) with appropriate level shifting if needed.
• Breadboards: Standard 0.1-inch pitch pins fit directly into solderless breadboards.

MOKWN Recommendation

For Egyptian electronics enthusiasts, the 74HC90 is an essential component for any digital logic lab. Whether you're a student learning counter circuits or a professional designing frequency dividers, this IC offers reliable performance at an economical price. Pair it with our 7-segment displays and decoders to build complete counting systems. Order now and get fast delivery across Egypt!