74LVQ374SJ

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: Low-voltage, high-speed, octal D-type flip-flop with 3-state outputs
• Package: Small Outline Integrated Circuit (SOIC)
• Essence: Sequential logic device used for storing and transferring binary data
• Packaging/Quantity: Available in reels or tubes, typically sold in quantities of 250 or 1000 units

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 200MHz
• Propagation Delay Time: 4.5ns (typical)

Detailed Pin Configuration

The 74LVQ374SJ IC has a total of 20 pins, which are assigned as follows:

1. Pin 1: Data Input (D0)
2. Pin 2: Data Input (D1)
3. Pin 3: Data Input (D2)
4. Pin 4: Data Input (D3)
5. Pin 5: Data Input (D4)
6. Pin 6: Data Input (D5)
7. Pin 7: Data Input (D6)
8. Pin 8: Data Input (D7)
9. Pin 9: Clock Input (CP)
10. Pin 10: Clock Enable Input (CE)
11. Pin 11: Output Enable Input (OE)
12. Pin 12: Master Reset Input (MR)
13. Pin 13: Output (Q0)
14. Pin 14: Output (Q1)
15. Pin 15: Output (Q2)
16. Pin 16: Output (Q3)
17. Pin 17: Output (Q4)
18. Pin 18: Output (Q5)
19. Pin 19: Output (Q6)
20. Pin 20: Output (Q7)

Functional Features

• Octal D-type flip-flop with 3-state outputs
• Positive-edge triggered clock input
• Asynchronous master reset input
• Active LOW output enable and clock enable inputs
• High-speed operation with low power consumption
• 3-state outputs for bus-oriented applications

Advantages and Disadvantages

Advantages: - Low-voltage operation allows compatibility with a wide range of systems - High-speed performance enables efficient data transfer - 3-state outputs facilitate bus sharing and reduce conflicts in multi-device systems

Disadvantages: - Limited number of flip-flops (8) in a single IC package - May require additional external components for specific applications

Working Principles

The 74LVQ374SJ is a positive-edge triggered flip-flop that stores and transfers binary data. It operates based on the clock signal provided at the CP pin. When the clock signal transitions from LOW to HIGH, the data present at the D0-D7 inputs is latched and stored in the corresponding Q0-Q7 outputs. The stored data remains unchanged until the next clock transition occurs.

The flip-flop can be asynchronously reset by applying a LOW signal to the MR pin. The outputs can be enabled or disabled using the OE and CE pins, respectively. The 3-state outputs allow multiple devices to share a common bus without causing conflicts.

Detailed Application Field Plans

The 74LVQ374SJ is commonly used in various digital systems where sequential data storage and transfer are required. Some application fields include: - Microprocessor-based systems - Data communication equipment - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• 74HC374: Similar octal D-type flip-flop with 3-state outputs, operates at higher voltage levels (2V to 6V)
• 74HCT374: Octal D-type flip-flop with 3-state outputs, compatible with both CMOS and TTL logic families
• SN74LVQ374: Low-voltage version of the 74LVQ374SJ, offered by Texas Instruments

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