Texas Instruments
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CD74HC299M
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CD74HC299M

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Shift Register
  • Characteristics: High-Speed, CMOS Logic, 8-Bit Parallel-In/Serial-Out
  • Package: 20-pin SOIC (Small Outline Integrated Circuit)
  • Essence: The CD74HC299M is a high-speed CMOS logic IC that functions as an 8-bit parallel-in/serial-out shift register.
  • Packaging/Quantity: Available in reels of 2500 units.

Specifications

  • Supply Voltage: 2V to 6V
  • Operating Temperature Range: -40°C to +85°C
  • Input Voltage Levels: High: 2V to VCC, Low: GND to 0.8VCC
  • Output Voltage Levels: High: VCC - 0.5V, Low: 0.5V
  • Maximum Clock Frequency: 74 MHz
  • Number of Input/Output Pins: 20

Detailed Pin Configuration

The CD74HC299M has a total of 20 pins, each serving a specific function:

  1. SER (Serial Data Input)
  2. CLK (Clock Input)
  3. RCLK (Register Clock Input)
  4. SRCLR (Shift Register Clear Input)
  5. QA-QH (Parallel Outputs A-H)
  6. QH' (Serial Output)
  7. GND (Ground)
  8. QH (Serial Output)
  9. MR (Master Reset Input)
  10. VCC (Supply Voltage)

Functional Features

  • High-speed operation allows for efficient data transfer.
  • CMOS logic ensures low power consumption and compatibility with various systems.
  • 8-bit parallel-in/serial-out configuration enables versatile data handling.
  • Shift register clear input provides control over the register's contents.
  • Master reset input allows for resetting the shift register to a known state.

Advantages and Disadvantages

Advantages: - High-speed operation enables quick data processing. - CMOS logic ensures low power consumption. - Versatile 8-bit parallel-in/serial-out configuration. - Compact SOIC package allows for easy integration into electronic systems.

Disadvantages: - Limited number of output pins may restrict certain applications. - Requires external clock signal for proper operation.

Working Principles

The CD74HC299M operates as an 8-bit parallel-in/serial-out shift register. It receives data in parallel format through the SER pin and shifts it out serially through the QH' pin. The CLK input controls the shifting process, while the RCLK input latches the parallel data into the register. The SRCLR input clears the shift register's contents, and the MR input resets the entire IC.

Detailed Application Field Plans

The CD74HC299M is commonly used in various applications, including:

  1. Data communication systems
  2. Serial-to-parallel data conversion
  3. Parallel-to-serial data conversion
  4. Digital signal processing
  5. Microcontroller interfacing

Detailed and Complete Alternative Models

  1. SN74HC299 - Similar functionality, available in DIP (Dual Inline Package) format.
  2. CD74HCT299 - Compatible with TTL (Transistor-Transistor Logic) voltage levels.
  3. MC74HC299 - Manufactured by Motorola, offering similar features.

These alternative models provide similar functionality to the CD74HC299M and can be considered as substitutes based on specific requirements.

In conclusion, the CD74HC299M is a high-speed CMOS logic IC that serves as an 8-bit parallel-in/serial-out shift register. Its compact package, versatile functionality, and compatibility with various systems make it suitable for a wide range of applications in data communication, signal processing, and microcontroller interfacing.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací CD74HC299M v technických řešeních

Sure! Here are 10 common questions and answers related to the application of CD74HC299M in technical solutions:

  1. Q: What is CD74HC299M? A: CD74HC299M is a high-speed CMOS (Complementary Metal-Oxide-Semiconductor) 8-bit universal shift/storage register.

  2. Q: What are the key features of CD74HC299M? A: Some key features include parallel-to-serial or serial-to-parallel data conversion, asynchronous reset capability, and wide operating voltage range.

  3. Q: How can CD74HC299M be used in technical solutions? A: CD74HC299M can be used for various applications such as data storage, data transfer, serial communication, and parallel-to-serial/serial-to-parallel conversion.

  4. Q: What is the maximum clock frequency supported by CD74HC299M? A: CD74HC299M supports a maximum clock frequency of 74 MHz.

  5. Q: Can CD74HC299M operate with both 3.3V and 5V power supplies? A: Yes, CD74HC299M is compatible with both 3.3V and 5V power supply voltages.

  6. Q: Does CD74HC299M have any built-in protection features? A: No, CD74HC299M does not have built-in protection features. External measures should be taken to protect against ESD (Electrostatic Discharge) and excessive voltage/current.

  7. Q: What is the typical power consumption of CD74HC299M? A: The typical power consumption of CD74HC299M is low, making it suitable for power-sensitive applications.

  8. Q: Can CD74HC299M be cascaded to increase the number of bits? A: Yes, multiple CD74HC299M ICs can be cascaded to increase the number of bits for parallel data storage or serial data transfer.

  9. Q: Are there any specific timing requirements for clock signals in CD74HC299M? A: Yes, CD74HC299M has specific setup and hold time requirements for clock signals, which should be considered for proper operation.

  10. Q: What is the package type available for CD74HC299M? A: CD74HC299M is available in a 20-pin SOIC (Small Outline Integrated Circuit) package.

Please note that these answers are general and may vary depending on the specific application and requirements.