Overview
The CD74HC4094M96 is a high-speed CMOS integrated circuit functioning as an 8-stage shift register with output latches. Manufactured using silicon-based CMOS technology, it is designed for reliable serial-to-parallel data conversion in digital systems. This IC belongs to the 74HC logic family, known for balancing speed and power efficiency. Its primary role is expanding I/O capabilities in microcontrollers or processors by converting serial input streams into parallel outputs, making it valuable in display drivers and data distribution systems.
Structure and Working Principle
The device comprises an 8-bit serial-in/parallel-out shift register followed by storage latches. Data enters serially through the DATA pin, clocked by the rising edge of the CLOCK signal. A separate STROBE input controls data transfer from the shift register to the output latches. An output enable (OE) pin allows tri-state control of the parallel outputs. The design includes buffered inputs and outputs for improved noise immunity. Propagation delay is typically 13ns at 5V, enabling operation at frequencies up to 25MHz in typical conditions.
Key Features
High-speed operation is a standout feature, with typical propagation delays of 13ns at VCC=5V. The CMOS technology ensures low power consumption, with static currents under 1μA in most conditions. The IC offers high noise immunity characteristic of HC logic (30% of supply voltage). Operating voltage ranges from 2V to 6V, providing design flexibility. All inputs have Schmitt trigger action, enhancing noise rejection in electrically noisy environments common in industrial applications.
Application Areas
Primary applications include LED matrix driving, where it efficiently controls multiple LEDs from limited microcontroller pins. It's commonly used in industrial control panels for indicator light sequencing and in automotive dashboard displays. The IC also finds use in data acquisition systems for parallel data expansion and in consumer electronics for button matrix scanning. Its ability to cascade multiple units makes it suitable for applications requiring more than 8 outputs, such as large digital displays or complex control interfaces.
Maintenance and Precautions
Proper handling is essential to prevent electrostatic discharge (ESD) damage. Always use grounded workstations and ESD-safe packaging during installation or handling. Operating conditions must remain within specified limits: supply voltage between 2V and 6V, input voltages between GND and VCC, and storage temperatures from -65°C to 150°C. Avoid exceeding absolute maximum ratings, especially during power-up sequences when input signals may exceed supply voltages.
B2B Procurement Guide
When sourcing CD74HC4094M96, verify the manufacturer's qualification (Texas Instruments is the original designer). Check for authorized distributors to ensure genuine components, as counterfeit parts are common in the semiconductor market. Consider ordering tape-and-reel packaging (2500 units per reel) for automated assembly. Lead times typically range from 2-8 weeks for standard orders. For critical applications, request production date codes to avoid old stock. MOQs usually start at 1000 pieces for best pricing, with discounts available at 10,000+ unit quantities.
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