SN74F299DWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Storage and Shift Register
• Characteristics: High-speed, 8-bit parallel-in/serial-out shift register with storage
• Package: SOIC-20 (Small Outline Integrated Circuit), Wide Body
• Essence: Efficient data storage and shifting capabilities in electronic systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Input Voltage Levels: CMOS/TTL compatible
• Output Voltage Levels: CMOS
• Maximum Clock Frequency: 100 MHz
• Number of Bits: 8
• Logic Family: TTL (Transistor-Transistor Logic)

Detailed Pin Configuration

1. GND (Ground)
2. QA (Output A)
3. QB (Output B)
4. QC (Output C)
5. QD (Output D)
6. QE (Output E)
7. QF (Output F)
8. QG (Output G)
9. QH (Output H)
10. SER (Serial Data Input)
11. CLK (Clock Input)
12. RCLK (Register Clock Input)
13. SRCLR (Shift Register Clear Input)
14. OE (Output Enable Input)
15. MR (Master Reset Input)
16. VCC (Supply Voltage)
17. NC (No Connection)
18. NC (No Connection)
19. NC (No Connection)
20. GND (Ground)

Functional Features

• Parallel-to-Serial Conversion: Allows the input data to be loaded in parallel and shifted out serially.
• Serial Data Input: Accepts the incoming data bit by bit.
• Clock Input: Controls the shifting of data from the parallel register to the serial output.
• Register Clock Input: Latches the parallel data into the internal storage register.
• Shift Register Clear Input: Resets the shift register and clears all stored data.
• Output Enable Input: Enables or disables the outputs.
• Master Reset Input: Resets the entire IC to its initial state.

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data transfer.
• Versatile functionality with parallel-to-serial conversion and storage capabilities.
• Wide operating temperature range makes it suitable for various environments.
• CMOS/TTL compatibility ensures easy integration into different systems.

Disadvantages

• Limited number of bits (8) may not be sufficient for certain applications requiring larger data storage.
• Requires external components for proper functioning, such as clock signals and power supply.

Working Principles

The SN74F299DWR is a high-speed 8-bit parallel-in/serial-out shift register with storage. It operates by accepting data in parallel through its eight input pins (QA to QH) and then shifting out the data serially through the SER pin. The CLK input controls the shifting process, allowing the data to move from the parallel register to the serial output.

The RCLK input latches the parallel data into the internal storage register, enabling the preservation of data even after shifting. The SRCLR input resets the shift register, clearing all stored data. The OE input enables or disables the outputs, providing control over when the data is visible at the output pins.

The MR input serves as a master reset, allowing the entire IC to be reset to its initial state. This feature is useful for initializing the shift register before starting a new data transfer.

Detailed Application Field Plans

The SN74F299DWR is commonly used in various electronic systems that require efficient data storage and shifting capabilities. Some specific application fields include:

1. Serial Data Communication: Used in serial communication protocols to convert parallel data into a serial stream for transmission.
2. Data Processing Systems: Employed in systems that require temporary storage and manipulation of data, such as microcontrollers and digital signal processors.
3. Memory Expansion: Integrated into memory modules to increase the storage capacity of computers and other devices.
4. Industrial Automation: Utilized in control systems to store and shift data related to sensors, actuators, and process variables.

Detailed and Complete Alternative Models

1. SN74HC299: Similar functionality with CMOS/TTL compatibility and 8-bit parallel-in/serial-out shifting capabilities.
2. CD4021B: 8-bit parallel-in/serial-out shift register with complementary outputs and wide supply voltage range.
3. 74LS299: TTL-compatible 8-bit parallel-in/serial-out shift register with storage and asynchronous reset feature.

These alternative models offer similar functionalities to the SN74F299DWR and can be considered based on specific requirements and compatibility with existing systems.

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