SN74ALS667DWR

Product Overview

Category: Integrated Circuit (IC)

Use: The SN74ALS667DWR is a high-speed, octal D-type flip-flop with clear and preset capabilities. It is commonly used in digital systems for data storage and synchronization purposes.

Characteristics: - High-speed operation - Octal configuration (8 flip-flops) - Clear and preset capabilities - Wide operating voltage range - Low power consumption

Package: The SN74ALS667DWR is available in a small outline package (SOIC) with 20 pins.

Essence: This IC is designed to provide reliable and efficient data storage and synchronization in digital systems.

Packaging/Quantity: The SN74ALS667DWR is typically sold in reels or tubes, containing multiple units per package.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Input Voltage High: 2.0V (min), 7.0V (max)
• Input Voltage Low: -0.5V (min), 0.8V (max)
• Output Voltage High: 2.4V (min), VCC (max)
• Output Voltage Low: 0V (min), 0.4V (max)
• Propagation Delay Time: 6ns (typical)
• Power Dissipation: 500mW (max)

Pin Configuration

The SN74ALS667DWR has a total of 20 pins, which are assigned specific functions as follows:

1. CLR (Clear)
2. D0 (Data Input 0)
3. CP (Clock Pulse)
4. D1 (Data Input 1)
5. D2 (Data Input 2)
6. D3 (Data Input 3)
7. D4 (Data Input 4)
8. D5 (Data Input 5)
9. D6 (Data Input 6)
10. D7 (Data Input 7)
11. PR (Preset)
12. Q0 (Flip-Flop Output 0)
13. Q1 (Flip-Flop Output 1)
14. Q2 (Flip-Flop Output 2)
15. Q3 (Flip-Flop Output 3)
16. GND (Ground)
17. Q4 (Flip-Flop Output 4)
18. Q5 (Flip-Flop Output 5)
19. Q6 (Flip-Flop Output 6)
20. VCC (Supply Voltage)

Functional Features

• High-speed operation allows for efficient data processing.
• Octal configuration provides multiple flip-flops in a single IC, saving space and simplifying circuit design.
• Clear and preset capabilities enable easy initialization of the flip-flop states.
• Wide operating voltage range ensures compatibility with various digital systems.
• Low power consumption reduces energy requirements.

Advantages and Disadvantages

Advantages: - High-speed operation enhances overall system performance. - Octal configuration saves board space and simplifies circuit design. - Clear and preset capabilities offer flexibility in controlling flip-flop states. - Wide operating voltage range increases compatibility with different systems. - Low power consumption contributes to energy efficiency.

Disadvantages: - Limited number of flip-flops (8) may not be sufficient for complex applications requiring more storage elements. - Propagation delay time may affect real-time applications that demand immediate response.

Working Principles

The SN74ALS667DWR operates based on the principles of D-type flip-flops. It stores and synchronizes digital data using clock pulses. The inputs (D0-D7) represent the data to be stored, while the CP input controls the timing of data storage. The CLR and PR inputs allow for clearing and presetting the flip-flop states, respectively. The outputs (Q0-Q6) provide the stored data.

Detailed Application Field Plans

The SN74ALS667DWR is widely used in various digital systems, including but not limited to: - Microcontrollers - Data communication devices - Computer memory modules - Industrial control systems - Signal processing equipment

Its high-speed operation, compact size, and versatile functionality make it suitable for applications that require efficient data storage and synchronization.

Alternative Models

For those seeking alternative options, the following ICs can be considered: - SN74ALS666DW: Similar to SN74ALS667DWR, but without clear and preset capabilities. - SN74ALS668DW: Octal D-type flip-flop with additional clock enable feature. - SN74ALS669DW: Octal D-type flip-flop with additional asynchronous clear and preset inputs.

These alternatives offer different features and functionalities, allowing users to choose the most suitable option based on their specific requirements.

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