74HC194 4bit Bi-directional Shift Register IC (DIP-16 Package)

74HC194 4Bit Bi-Directional Shift Register IC is a high-speed CMOS logic device designed for efficient data storage, transfer, and manipulation in digital electronic systems. Belonging to the widely used 74HC (High-Speed CMOS) logic family, this IC combines low power consumption with fast switching speeds, making it an ideal choice for modern embedded systems, microcontroller-based designs, and educational electronics projects.

The 74HC194 is a universal shift register, capable of performing multiple data-handling operations such as shift left, shift right, parallel load, and hold functions. With its flexible control inputs and reliable CMOS architecture, this IC is commonly used in data conversion, serial-to-parallel and parallel-to-serial communication, counters, timing circuits, and digital signal processing applications.

Key Features of 74HC194 IC

• 4-Bit Bi-Directional Shift Register supporting both left and right shifting operations

• Universal shift register functionality: shift left, shift right, parallel load, and hold

• High-speed CMOS (HC) technology for fast data processing

• Low power consumption, ideal for battery-powered devices

• Wide operating voltage range for compatibility with various logic levels

• Parallel and serial data inputs for flexible data handling

• Clocked synchronous operation ensuring reliable data transfer

• Asynchronous master reset for quick initialization

• TTL-compatible inputs for easy integration with legacy logic circuits

• Compact 16-pin DIP/SOIC package for space-efficient PCB design

Technical Specifications

• IC Type: 4-Bit Bi-Directional Universal Shift Register

• Logic Family: 74HC (High-Speed CMOS)

• Operating Voltage (Vcc): 2V to 6V

• Typical Operating Voltage: 5V

• Number of Bits: 4

• Data Transfer: Serial and Parallel

• Shift Direction: Left and Right

• Clock Type: Positive-edge triggered

• Propagation Delay: Typically 8–15 ns (at 5V)

• Output Drive Capability: ±4 mA

• Input Logic Level: TTL compatible

• Operating Temperature Range: –40°C to +85°C

• Package Types: DIP-16, SOIC-16, TSSOP-16 (varies by manufacturer)

Functional Description

The 74HC194 shift register IC operates under the control of two mode select inputs, which determine the function performed during each clock pulse. Depending on the input configuration, the IC can shift data to the left or right, load data in parallel, or maintain the current data state. The four parallel outputs (Q0–Q3) provide immediate access to stored data, while the serial inputs allow seamless data flow from one stage to another.

This versatility makes the 74HC194 an essential building block in complex digital logic systems, particularly where controlled data movement is required. The IC’s CMOS architecture ensures low noise, high reliability, and reduced heat generation, even in high-frequency applications.

Applications of 74HC194 IC

The 74HC194 4-Bit Bi-Directional Shift Register is widely used in both commercial and educational electronics due to its flexibility and ease of implementation. Common applications include:

• Serial-to-parallel and parallel-to-serial data conversion

• Digital counters and sequence generators

• Data buffering and temporary storage

• Arithmetic and logic unit (ALU) support circuits

• Microcontroller and microprocessor interfacing

• LED display control and scanning circuits

• Timing and control systems

• Communication and data transmission systems

• Educational electronics labs and training kits

Why Choose 74HC194?

The 74HC194 stands out due to its combination of versatility, speed, and low power operation. Unlike basic shift registers, it provides full control over data direction and loading methods, reducing the need for additional logic components. Its wide voltage compatibility and industry-standard pin configuration ensure seamless integration into both new designs and existing circuits.

Whether you are designing a high-performance embedded system, developing a digital electronics project, or teaching fundamental concepts of data manipulation, the 74HC194 IC delivers consistent performance and design flexibility.

The 74HC194 4-Bit Bi-Directional Shift Register IC is a reliable, cost-effective, and highly versatile digital logic component. With support for multiple shift operations, low power consumption, and high-speed performance, it is an essential IC for engineers, students, and hobbyists alike. Ideal for data transfer, signal processing, and control applications, the 74HC194 continues to be a preferred choice in modern digital electronics design.

Package Includes:

1 x 74HC194 4bit Bi-directional Shift Register IC (DIP-16 Package)

FAQ

1. Where can we buy this 74HC194 4bit Bi-directional Shift Register IC?

This product is available online  http://74HC194 4bit Bi-directional Shift Register IC  and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103

2. When can I get this 74HC194 4bit Bi-directional Shift Register IC after placing the order?

RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.

Video Link: How to Make a 4-bit Shift Register Circuit