Encyclopedia Entry: 74VHC165FT

Product Overview

Category

The 74VHC165FT belongs to the category of integrated circuits (ICs) and specifically falls under the family of shift registers.

Use

This IC is primarily used for parallel-to-serial data conversion in various digital applications.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with both CMOS and TTL logic levels

Package

The 74VHC165FT is available in a small form factor package, such as a 16-pin TSSOP (Thin Shrink Small Outline Package).

Essence

The essence of the 74VHC165FT lies in its ability to efficiently convert parallel data inputs into a serial output stream.

Packaging/Quantity

Typically, the 74VHC165FT is supplied in reels or tubes, with each reel containing a specific quantity of ICs, usually around 2500 units.

Specifications

• Supply Voltage Range: 2.0V to 5.5V
• Input Voltage Range: 0V to Vcc
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 100 MHz
• Number of Inputs: 8
• Number of Outputs: 1

Detailed Pin Configuration

The 74VHC165FT has a total of 16 pins, which are assigned specific functions as follows:

1. Serial Data Output (QH')
2. Parallel Data Input (D0)
3. Parallel Data Input (D1)
4. Parallel Data Input (D2)
5. Parallel Data Input (D3)
6. Parallel Data Input (D4)
7. Parallel Data Input (D5)
8. Parallel Data Input (D6)
9. Parallel Data Input (D7)
10. Ground (GND)
11. Clock Input (CP)
12. Clock Enable Input (CE)
13. Serial Data Input (DS)
14. Shift/Load Control Input (SH/LD)
15. Supply Voltage (Vcc)
16. Serial Data Output (QH)

Functional Features

The 74VHC165FT offers the following functional features:

• Parallel-to-serial data conversion
• Asynchronous parallel loading capability
• Synchronous serial output
• Internal shift register for data storage
• Clock enable and shift/load control inputs for flexible operation

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data transfer
• Low power consumption makes it suitable for battery-powered devices
• Wide operating voltage range provides compatibility with various systems
• Compatibility with both CMOS and TTL logic levels simplifies integration into existing designs

Disadvantages

• Limited number of inputs and outputs restricts its application in complex systems
• Lack of built-in error detection or correction mechanisms may require additional circuitry

Working Principles

The 74VHC165FT operates based on the principle of shifting data through a series of flip-flops. When the clock input (CP) receives a pulse, the parallel data inputs (D0-D7) are sampled and stored internally. The stored data is then shifted out sequentially through the serial data output (QH') upon each subsequent clock pulse.

Detailed Application Field Plans

The 74VHC165FT finds applications in various digital systems, including but not limited to:

1. Data communication equipment
2. Industrial automation systems
3. Consumer electronics
4. Automotive electronics
5. Robotics
6. Instrumentation and measurement devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74VHC165FT include:

1. SN74HC165N by Texas Instruments
2. CD74HC165E by Texas Instruments
3. 74HCT165 by NXP Semiconductors
4. MC74HC165AN by ON Semiconductor

These alternative models can be considered based on specific requirements, availability, and compatibility with the target system.

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