74HC164 8Bit Serial In/Parallel Out Shift Register is a high-performance CMOS logic integrated circuit designed for efficient serial-to-parallel data conversion in digital systems. Widely used in microcontroller interfacing, embedded systems, LED control, display driving, and digital communication circuits, the 74HC164 offers reliable operation, low power consumption, and fast switching speeds.
This IC belongs to the 74HC (High-Speed CMOS) logic family, ensuring excellent noise immunity and compatibility with TTL logic levels. With two serial data inputs, eight parallel outputs, and an asynchronous clear input, the 74HC164 is ideal for expanding output lines in space-constrained designs.
Key Features of 74HC164 Shift Register
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8-bit Serial-In / Parallel-Out (SIPO) Shift Register
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High-Speed CMOS technology for fast data shifting
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Low power consumption, ideal for battery-powered applications
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Two serial data inputs (A and B) for flexible data handling
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Asynchronous master reset clears all outputs instantly
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TTL-compatible input levels
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Wide operating voltage range (2V–6V)
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High noise immunity, suitable for industrial and educational use
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Available in standard DIP and SMD packages
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RoHS compliant and reliable for long-term applications
Detailed Product Description
The 74HC164 Shift Register IC converts serial data streams into parallel outputs using a clock signal. On each rising edge of the clock, data present at the serial inputs is shifted into the register and made available at the parallel output pins (Q0–Q7).
Unlike shift registers with output latches, the 74HC164 directly reflects the shifted data on the outputs, making it ideal for real-time display and control applications. The asynchronous clear (CLR) input allows immediate resetting of all outputs to logic LOW, independent of the clock, ensuring predictable startup behavior.
Thanks to its CMOS architecture, the IC offers minimal static power consumption while delivering high switching speeds, making it suitable for both low-power embedded designs and high-frequency digital circuits.
Technical Specifications
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IC Type: 8-Bit Serial In / Parallel Out Shift Register
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Logic Family: 74HC (High-Speed CMOS)
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Operating Voltage (Vcc): 2V to 6V
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Input Type: CMOS / TTL compatible
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Clock Type: Positive edge triggered
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Reset Type: Asynchronous Clear (Active LOW)
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Number of Outputs: 8 (Q0–Q7)
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Data Inputs: 2 (A and B)
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Operating Temperature Range: –40°C to +85°C
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Propagation Delay: Low (High-speed operation)
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Package Types: DIP-14, SOIC-14 (varies by manufacturer)
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Compliance: RoHS compliant
Applications of 74HC164 Shift Register
The 74HC164 IC is widely used across electronics, embedded systems, robotics, and educational projects due to its versatility and ease of use.
Common Applications Include:
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LED and LED Matrix Control
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7-Segment Display Driving
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Output Expansion for Microcontrollers (Arduino, PIC, AVR, ARM)
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Digital Clock and Counter Circuits
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Data Buffering and Signal Routing
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Serial-to-Parallel Data Conversion
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Industrial Control Panels
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Educational and Training Kits
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Robotics and Automation Systems
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Communication Interface Circuits
Why Choose the 74HC164 Shift Register?
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Reduces I/O pin usage in microcontroller designs
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Ensures stable and reliable data transfer
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Simplifies hardware design and wiring
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Suitable for beginners, students, and professionals
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Cost-effective solution for digital expansion needs
The 74HC164 8-Bit Serial In / Parallel Out Shift Register is a dependable and efficient logic IC for modern digital designs. With its high-speed CMOS performance, low power consumption, wide voltage range, and flexible interfacing, it is an excellent choice for embedded systems, display control, automation, and educational projects.
Whether you are designing a professional electronics product or working on a DIY or academic project, the 74HC164 offers simplicity, reliability, and performance in a compact package.
Package Includes:
1 x 74HC164 8Bit Serial In/Parallel out Shift Register IC (DIP-14 Package)
FAQ
1. Where can we buy this 74HC164 8Bit Serial In/Parallel out Shift Register IC?
This product is available online https://aiiottech.in/product/74hc164-8bit-serial-in-parallel-out-shift-reg/ and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103
2. When can I get this 74HC164 8Bit Serial In/Parallel out Shift Register IC after placing the order?
RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.
Video Link: 74HC164 8bit Serial-In/Parallel-Out Shift Register




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