A Complete Guide to Cd74ac164e: Specifications, Types, and Applications

Types of CD74AC164E Shift Register ICs

The CD74AC164E is a high-speed 8-bit serial-in, parallel-out shift register from Texas Instruments' AC (Advanced CMOS) logic family. Known for its efficiency and reliability, this IC is widely used in digital electronics for data conversion, signal expansion, and control applications. Available in multiple variants, the CD74AC164E caters to diverse design requirements based on operating conditions, performance needs, and physical integration constraints.

These variations are typically categorized by functional specifications (such as temperature range and speed) and physical packaging, allowing engineers and hobbyists to select the optimal version for their circuit board designs—whether for consumer electronics, industrial systems, or aerospace applications.

Standard Version

Designed for general-purpose digital applications with balanced performance and power efficiency.

Advantages

• High-speed operation up to 100 MHz
• Low power consumption (typical ICC of 2 mA)
• TTL-compatible inputs for easy interfacing
• Wide supply voltage range (2V to 6V)
• Ideal for breadboarding and prototyping

Limitations

• Operating temperature limited to 0°C–70°C
• Not suitable for extreme environments
• May require additional buffering in noise-prone circuits

Best for: Consumer electronics, educational projects, embedded systems, and general digital logic circuits

Extended Temperature Range Version

Engineered for reliability in harsh environmental conditions with enhanced thermal stability.

Advantages

• Wide operating temperature: -40°C to +125°C
• Superior thermal and electrical stability
• Resistant to thermal cycling stress
• Suitable for mission-critical systems
• Long-term reliability in demanding applications

Limitations

• Higher cost compared to standard version
• Slightly longer lead times for procurement
• May be over-specified for benign environments

Best for: Industrial automation, automotive systems, aerospace, and outdoor equipment

DIP (Dual In-line Package)

Classic through-hole package ideal for manual assembly and prototyping.

Advantages

• Easy to handle and solder manually
• Perfect for breadboards and development boards
• Excellent heat dissipation due to lead spacing
• Widely available and beginner-friendly

Limitations

• Larger footprint (0.3” width)
• Not suitable for high-density PCBs
• Slower signal integrity at very high frequencies

Best for: Prototyping, educational kits, low-volume production, and repair work

SOIC (Small Outline IC)

Compact surface-mount package designed for space-constrained and automated manufacturing environments.

Advantages

• 30–50% smaller footprint than DIP
• Ideal for high-density PCB layouts
• Compatible with automated pick-and-place machines
• Improved performance in high-frequency applications

Limitations

• Requires reflow soldering or SMD tools
• More difficult to hand-solder or replace
• Less forgiving for prototyping errors

Best for: Commercial electronics, mass production, compact devices, and modern PCB designs

Expert Tip: When using the CD74AC164E in noise-sensitive environments, add a 0.1µF ceramic bypass capacitor between VCC and GND near the IC to stabilize power delivery and reduce signal jitter.

In summary, the CD74AC164E offers versatile options tailored to different engineering needs. Whether you're designing a simple LED controller or a robust industrial system, selecting the right variant—based on temperature requirements, physical space, and production method—ensures optimal performance, reliability, and cost-efficiency in your electronic design.

Function, Features, and Design of the CD74AC164E Shift Register

The CD74AC164E is a high-performance CMOS 8-bit serial-in, parallel-out shift register designed for efficient data manipulation and voltage level translation in digital systems. Built using advanced silicon semiconductor technology, this IC combines low power consumption with high-speed operation, making it ideal for applications such as microcontroller interfacing, LED display drivers, and signal expansion in embedded systems.

As a 5-stage (expanded to 8-bit output) shift register, the CD74AC164E shifts data serially on each rising edge of the clock signal, outputting the stored bits in parallel format. Its ability to translate voltage levels between different logic families enhances its versatility across mixed-signal environments.

Key Features of the CD74AC164E

Internal Structure and Semiconductor Composition

The CD74AC164E is fabricated using high-purity silicon substrate, leveraging its excellent semiconducting properties to enable precise control of electrical current flow. Silicon's bandgap and thermal stability make it ideal for reliable digital switching in a wide range of environmental conditions.

To form the essential components of the integrated circuit, the silicon is selectively doped with impurities such as boron (to create p-type regions) and phosphorus (for n-type regions). These doped regions form the basis of CMOS transistors—complementary pairs of MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors)—that constitute the flip-flops and logic gates within the shift register.

This CMOS architecture minimizes static power dissipation, as one transistor in each pair is typically off, preventing direct current flow from supply to ground. The compact transistor design allows for high integration density, enabling the entire 8-bit shift register to be housed in a small 14-pin DIP or SOIC package.

How to Use the CD74AC164E in Circuit Design

Using the CD74AC164E is straightforward and well-suited for both hobbyist and professional electronics projects. Below are key steps and best practices for effective implementation:

Pin Connections

• Pin 1 (A), Pin 2 (B): Serial data inputs (often tied together).
• Pin 8 (GND): Ground connection.
• Pin 14 (VCC): Power supply (3V–15V).
• Pin 3 (CLK): Clock input—data shifts on rising edge.
• Pin 9 (MR): Master Reset (active-low)—pull high to disable reset.
• Pins 3–7, 13, 12, 11 (Q0–Q7): Parallel output pins.

Operation Guide

1. Connect VCC and GND to the appropriate power rails.
2. Apply a logic high to MR (Pin 9) to enable normal operation.
3. Feed serial data into Pin 1/2 from a microcontroller or logic source.
4. Provide a clock signal (e.g., from MCU GPIO) to Pin 3.
5. On each clock pulse, data shifts right; after 8 pulses, full byte appears on Q0–Q7.

Important: Always ensure that unused inputs are tied to VCC or GND to prevent floating signals, which can cause erratic behavior or increased power draw. Use decoupling capacitors (e.g., 0.1 µF ceramic) near the VCC pin to suppress voltage spikes and noise. Avoid exceeding the maximum supply voltage (15V) to prevent permanent damage. When interfacing with microcontrollers, verify logic level compatibility—especially when using 3.3V MCUs driving a 5V+ system.

Typical Applications

• LED Matrix or Display Drivers: Expand GPIOs to control multiple LEDs or 7-segment displays.
• Microcontroller I/O Expansion: Add extra output lines without additional hardware.
• Serial-to-Parallel Conversion: Interface with sensors, actuators, or peripheral modules requiring parallel input.
• Voltage Level Shifting: Bridge logic levels between different voltage domains (e.g., 3.3V MCU to 12V relay module).
• Industrial Control Systems: Used in PLCs and automation circuits for signal sequencing and timing control.

Commercial Value of the CD74AC164E

The CD74AC164E is a high-speed CMOS logic device widely adopted across global electronics markets due to its reliable performance, versatility, and robust engineering. As an 8-bit serial-to-parallel shift register, it plays a critical role in digital signal processing, data conversion, and control applications, making it a valuable component in both consumer and industrial electronics.

Versatility Across Applications

The CD74AC164E's ability to convert serial input data into parallel outputs makes it ideal for a wide range of systems where signal expansion or timing control is required.

• Consumer Electronics: Used in LED displays, remote controls, and home automation systems for efficient I/O expansion
• Industrial Controls: Integrated into PLCs, motor drivers, and sensor arrays for reliable data handling
• Telecommunications: Supports data serialization in communication interfaces and protocol converters
• Embedded Systems: Commonly found in microcontroller-based designs to reduce pin count requirements

Key advantage: Simplifies circuit design by reducing the number of microcontroller pins needed

Power Efficiency & Thermal Performance

As a CMOS-based device, the CD74AC164E offers exceptional power efficiency, drawing minimal current in static states and reducing overall system energy consumption.

• Low quiescent current extends battery life in portable and IoT devices
• Reduced heat generation minimizes the need for active cooling solutions
• Improved thermal stability enhances long-term reliability in enclosed environments
• Enables dense PCB layouts without thermal crosstalk concerns

Energy savings: Consumes up to 70% less power than equivalent bipolar logic devices

Wide Operating Voltage Range

The CD74AC164E supports a broad supply voltage range (typically 2V to 6V), allowing seamless integration into mixed-voltage systems and legacy designs.

• Compatible with 3.3V, 5V, and other common logic levels
• Reduces need for additional level-shifting circuitry
• Facilitates upgrades in existing systems without full redesign
• Supports operation in fluctuating power environments

Design flexibility: Enables use in both modern low-voltage and traditional 5V systems

Environmental Resilience & Cost-Effectiveness

Engineered for durability, the CD74AC164E performs reliably in demanding conditions, making it suitable for mass production and harsh environments.

• Operates across a wide temperature range (-55°C to +125°C), ideal for automotive and industrial use
• High noise immunity ensures stable operation in electrically noisy environments
• Proven reliability reduces field failure rates and warranty claims
• Low unit cost supports economical scaling for high-volume manufacturing

ROI benefit: Combines low acquisition cost with high longevity and minimal maintenance

Strategic Insight: The CD74AC164E remains a go-to solution in digital logic design due to its balance of performance, reliability, and cost. For engineers and procurement teams, its widespread availability from multiple manufacturers reduces supply chain risk and ensures long-term design sustainability. Its compatibility with industry-standard packages (e.g., DIP, SOIC) also simplifies prototyping and repair workflows.

What Makes the CD74AC164E Durable and Sturdy?

The durability of the CD74AC164E stems from its advanced semiconductor construction and robust design principles, ensuring long-term performance even under stress.

High-Quality Semiconductor Materials

The IC is fabricated using high-purity silicon substrates doped with precise amounts of phosphorus (for n-type) and boron (for p-type) to form reliable MOSFET transistors within the CMOS architecture.

• Doping ensures consistent threshold voltages and switching characteristics
• Controlled crystal growth minimizes defects and leakage currents
• Multi-layer oxide insulation protects internal junctions from breakdown
• On-chip protection diodes guard against electrostatic discharge (ESD)

Technical note: The AC series features advanced processing for faster switching speeds without sacrificing stability

Electrical and Environmental Robustness

The CD74AC164E is engineered to withstand voltage fluctuations, transient spikes, and extreme operating conditions.

• Wide input voltage tolerance prevents damage from power surges
• High ESD protection (typically ±2000V HBM) enhances handling reliability
• Hermetic or moisture-resistant packaging options available for harsh environments
• Thermal shutdown characteristics prevent catastrophic failure during overload

Reliability metric: MTBF (Mean Time Between Failures) exceeds 1 million hours under normal conditions

How to Ensure the CD74AC164E Remains Durable and Sturdy?

Maximizing the lifespan and performance of the CD74AC164E requires adherence to best practices in circuit design, power management, and environmental control.

• Maintain Stable Power Supply: Use regulated power sources within the 2V–6V range; avoid voltage spikes using decoupling capacitors (0.1µF ceramic) near the V_CC pin
• Operate Within Temperature Limits: Keep ambient temperatures between -55°C and +125°C; avoid prolonged exposure to humidity or corrosive atmospheres
• Respect Current Ratings: Do not exceed maximum output current per pin (typically 25mA) to prevent overheating and latch-up
• Control Signal Integrity: Use proper PCB layout techniques—minimize trace lengths, avoid crosstalk, and terminate signals when necessary
• Implement Thermal Management: Provide adequate airflow or heatsinking in high-density designs; monitor junction temperature in critical applications
• Follow Handling Protocols: Use ESD-safe workstations during installation to prevent static damage, especially in dry environments

Pro Tip: Always refer to the manufacturer’s datasheet for specific derating curves and application notes. For mission-critical systems, consider adding overvoltage protection (TVS diodes) and current-limiting resistors on output lines to further enhance reliability.

Additional Considerations for Long-Term Use

• Supply Chain Stability: The CD74AC164E is available from multiple vendors (Texas Instruments, ON Semiconductor, etc.), reducing obsolescence risk
• Packaging Options: Available in through-hole (PDIP) and surface-mount (SOIC, TSSOP) packages for flexible integration
• Pin-to-Pin Compatibility: Drop-in replacement for other 74AC164 variants simplifies design iterations
• Compliance Standards: Meets RoHS and REACH environmental regulations, supporting sustainable manufacturing
• Design Support: Extensive reference designs, SPICE models, and technical documentation available online

How To Choose the CD74AC164E: A Comprehensive Buyer’s Guide

The CD74AC164E is a high-speed 8-bit serial-in, parallel-out shift register from Texas Instruments, widely used in digital logic circuits, microcontroller interfacing, and signal processing applications. Selecting the right component involves more than just matching part numbers—it requires careful evaluation of electrical specifications, supplier reliability, product availability, and long-term support. This guide provides a detailed breakdown of the key factors to consider when purchasing the CD74AC164E to ensure optimal performance, reliability, and supply chain continuity.

Critical Warning: Counterfeit or obsolete components can lead to system failures, reduced lifespan, and costly repairs. Always verify authenticity and check lifecycle status before procurement to avoid integration issues in production or design.

Key Selection Criteria for CD74AC164E

1. Operating Voltage and Electrical Compatibility

The CD74AC164E operates within a 2V to 6V supply range, making it compatible with both 3.3V and 5V logic systems. Ensure your application's voltage rails align with this range to prevent under-voltage instability or over-voltage damage.

• Verify compatibility with your microcontroller or driver IC output levels
• Check noise margins and signal integrity at lower voltages (e.g., 2.3V–3.6V)
• Consider power supply regulation and decoupling capacitor placement for stable operation

2. Propagation Delay and Speed Requirements

With a typical propagation delay of 8ns at 5V, the CD74AC164E is suitable for high-speed applications. Evaluate your system’s timing budget to ensure the device meets setup and hold time requirements.

• Use in applications requiring fast data shifting, such as LED displays or communication interfaces
• Account for temperature and voltage variations that affect delay times
• Compare with alternatives (e.g., CD74HC164) if lower speed but higher noise immunity is acceptable

3. Power Consumption and Efficiency

The AC (Advanced CMOS) technology offers low power consumption while maintaining high speed. However, dynamic power increases with frequency.

• Estimate average current draw based on clock frequency and load capacitance
• Use in battery-powered or energy-efficient systems where performance and power must be balanced
• Ensure thermal management in high-density PCB layouts

4. Supplier Reputation and Authenticity

A supplier’s reputation directly impacts the authenticity and reliability of the CD74AC164E you receive. Reputable distributors adhere to strict sourcing policies and counterfeit detection protocols.

• Purchase from authorized distributors like Digi-Key, Mouser, Arrow, or Avnet
• Avoid unverified marketplaces (e.g., generic e-commerce sites) where counterfeit risk is high
• Check for traceability codes, original packaging, and batch numbers

Pro Tip: Request a Certificate of Conformance (CoC) from the supplier to verify that the components meet manufacturer specifications and are not remarked or recycled.

5. Industry Experience and Technical Support

Suppliers with extensive industry experience offer more than just parts—they provide technical guidance, lifecycle management, and inventory forecasting.

• Experienced suppliers can recommend drop-in replacements or pin-compatible alternatives
• They often have access to real-time stock data and long-term availability forecasts
• Look for distributors with dedicated FAEs (Field Application Engineers) for design support

6. Product Availability and Lifecycle Status

Ensure the CD74AC164E is currently in production and not nearing end-of-life (EOL). Using obsolete components can jeopardize long-term product support.

• Check the Texas Instruments product page for official lifecycle status
• Avoid suppliers who stock outdated or last-time-buy (LTB) batches without disclosure
• Monitor for notifications about product discontinuation or packaging changes

7. Quality Assurance and Testing Standards

Quality is determined by the manufacturer’s testing procedures and quality control processes. TI’s AC series undergoes rigorous screening for performance and reliability.

• Look for compliance with industry standards (e.g., AEC-Q100 for automotive use, if applicable)
• Inquire about failure rates (FIT), MTBF (Mean Time Between Failures), and stress testing
• Prefer suppliers who perform incoming inspection and humidity sensitivity level (MSL) verification

8. Proximity to Manufacturing and Distribution Centers

Suppliers located near major semiconductor manufacturing or distribution hubs (e.g., USA, Germany, Singapore, Taiwan) often offer faster lead times and better inventory turnover.

• Shorter logistics chains reduce delivery times and customs delays
• Local suppliers can respond quickly to urgent orders or design changes
• Regional warehouses improve stock availability and reduce dependency on overseas shipping

9. Global Reach and Supply Chain Resilience

For international projects or large-scale production, a supplier’s global presence ensures consistent availability across regions.

• Global distributors offer multi-regional warehousing and localized customer service
• They can manage currency, compliance, and import regulations across markets
• Integrated logistics networks reduce shipping costs and improve delivery reliability

Design Tip: Always include a footprint-compatible alternative (e.g., CD74HC164 or SN74AC164) in your PCB layout to allow for last-minute substitutions due to supply chain constraints.

Final Recommendations

• Always download the latest datasheet from Texas Instruments for accurate specifications
• Use parametric search tools on distributor websites to filter by stock, packaging (PDIP, SOIC), and RoHS compliance
• Consider tape-and-reel packaging for automated assembly; tube packaging for prototyping
• Monitor component lifecycle alerts through services like SiliconExpert or UL VP
• Build relationships with multiple authorized suppliers to mitigate supply disruptions

Selecting the right CD74AC164E isn’t just about price or availability—it’s about ensuring long-term reliability, performance, and support. By prioritizing supplier credibility, technical compatibility, and lifecycle status, you protect your design from hidden risks and ensure seamless integration into your electronic system. When in doubt, consult with a technical sales representative or applications engineer to confirm suitability for your specific use case.

Frequently Asked Questions About the CD74AC164E Logic Device

The CD74AC164E is primarily designed for engineers, industrial designers, and manufacturers working in automation, control systems, and embedded electronics. Its ideal users are those developing or maintaining industrial machinery where reliable digital signal processing is essential.

• Industrial Automation Engineers: Use the device in programmable logic controllers (PLCs), motor control units, and sensor interface modules to manage real-time operations.
• Control System Designers: Integrate the chip into relay drivers and timing circuits due to its ability to shift and store data efficiently.
• Embedded Systems Developers: Employ it in communication interfaces and data routing applications where serial-to-parallel conversion is needed.
• Original Equipment Manufacturers (OEMs): Incorporate the CD74AC164E into equipment such as CNC machines, conveyor systems, and HVAC controls for robust performance under demanding conditions.

Thanks to its high noise immunity and stable operation in electrically noisy environments, the CD74AC164E has become a trusted component in mission-critical industrial applications where system uptime and precision are paramount.

When developing the CD74AC164E, semiconductor engineers prioritized flexibility, durability, and compatibility to meet the diverse requirements of modern electronic systems. The design process focused on addressing real-world challenges faced by circuit designers across industries.

• Versatile Functionality: The device was engineered as an 8-bit serial-in, parallel-out shift register, allowing it to expand I/O capabilities in microcontroller-based systems with minimal pin usage.
• Wide Operating Voltage Range: Designed to function reliably from 2V to 6V, enabling seamless integration into both low-voltage portable devices and standard 5V industrial circuits.
• Temperature Resilience: Built to operate across a broad temperature range (typically -55°C to 125°C), making it suitable for harsh environments like factory floors, outdoor installations, and automotive systems.
• High-Speed Performance: Optimized for fast clock rates, supporting data transfer speeds ideal for time-sensitive control applications.
• CMOS Technology Benefits: Utilizes advanced CMOS fabrication for low power consumption and high noise immunity—critical for battery-powered and electrically noisy applications.

These design considerations ensure that the CD74AC164E meets the evolving demands of compact, energy-efficient, and highly reliable digital systems.

The CD74AC164E is a high-speed CMOS logic device that serves as an 8-bit shift register, playing a crucial role in digital data management within electronic circuits. It converts serial input data into parallel outputs, enabling efficient communication and control in a wide range of applications.

• Data Shifting and Storage: Accepts serial data through a clock-synchronized input and stores it across eight output pins, which can drive LEDs, relays, or other logic circuits.
• I/O Expansion: Allows microcontrollers with limited GPIO pins to control multiple external devices, such as displays, sensors, or actuators, without requiring additional hardware.
• Signal Synchronization: Features a gated clock input and asynchronous master reset, ensuring precise timing control and system reset capability.
• Noise Filtering: Includes Schmitt-trigger action on clock inputs, improving signal integrity in environments with electrical interference.
• Industrial Interface Bridging: Commonly used to interface between microprocessors and peripheral systems in automation, robotics, and telecommunications infrastructure.

Due to its combination of speed, low power draw, and voltage flexibility, the CD74AC164E is widely adopted in applications ranging from consumer electronics like LED displays and gaming peripherals to complex industrial control panels and test equipment.

To ensure optimal performance and compatibility, buyers must evaluate several technical and environmental specifications before integrating the CD74AC164E into their designs. Selecting the right variant involves more than just functionality—it's about long-term reliability and system synergy.

Additionally, buyers should verify the manufacturer (e.g., Texas Instruments, ON Semiconductor) and check for authenticity through authorized distributors to avoid counterfeit components that could compromise system integrity.

The price of the CD74AC164E varies based on multiple factors including packaging, quantity, supplier, and availability. While exact figures fluctuate with market conditions, the following provides a realistic overview for budgeting and procurement planning.

• Single Unit (Sample Pricing): Typically ranges from $0.75 to $2.50 each, depending on the distributor and package type (e.g., PDIP vs. SOIC).
• Bulk Orders (100+ units): Prices drop significantly, often between $0.30 and $0.60 per unit, especially when sourced from major electronics suppliers like Digi-Key, Mouser, or Arrow.
• Specialty Variants: High-reliability or extended-temperature versions (e.g., military-grade) may cost upwards of $4.00 per unit due to rigorous testing and certification.
• Distribution Channel Impact: Authorized distributors ensure genuine parts and traceability but may charge a premium compared to third-party sellers, where counterfeit risk increases.

Customers should also consider total cost of ownership—opting for slightly more expensive, authentic components from trusted sources can prevent costly failures, rework, and downtime in production systems. Always consult real-time pricing on platforms like Octopart or component manufacturer websites for up-to-date quotes tailored to your volume and delivery needs.