Encyclopedia Entry: 74ACTQ543QSCX

Product Information Overview

Category: Integrated Circuit (IC)

Use: The 74ACTQ543QSCX is a high-speed octal transparent latch with 3-state outputs. It is commonly used in digital systems for data storage and transfer.

Characteristics: - High-speed operation - Octal latch with 3-state outputs - Transparent latch function - Low power consumption - Wide operating voltage range

Package: The 74ACTQ543QSCX is available in a small outline integrated circuit (SOIC) package, which provides ease of handling and compatibility with standard PCB designs.

Essence: This IC serves as a reliable solution for storing and transferring data in various digital applications.

Packaging/Quantity: The 74ACTQ543QSCX is typically sold in reels or tubes containing multiple units, depending on the supplier. The exact quantity may vary.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Output Drive Capability: ±24mA
• Propagation Delay: 6ns (max)
• Output Transition Time: 2.5ns (typ)

Detailed Pin Configuration

The 74ACTQ543QSCX has a total of 20 pins, each serving a specific purpose. Here is the detailed pin configuration:

1. GND (Ground)
2. D0 (Data Input 0)
3. D1 (Data Input 1)
4. D2 (Data Input 2)
5. D3 (Data Input 3)
6. D4 (Data Input 4)
7. D5 (Data Input 5)
8. D6 (Data Input 6)
9. D7 (Data Input 7)
10. OE (Output Enable)
11. LE (Latch Enable)
12. Q0 (Output 0)
13. Q1 (Output 1)
14. Q2 (Output 2)
15. Q3 (Output 3)
16. Q4 (Output 4)
17. Q5 (Output 5)
18. Q6 (Output 6)
19. Q7 (Output 7)
20. VCC (Supply Voltage)

Functional Features

• Transparent latch function: The 74ACTQ543QSCX allows data to pass through when the latch enable (LE) signal is high, providing real-time data transfer.
• Output enable (OE) control: The 3-state outputs can be disabled by setting the OE signal low, allowing multiple devices to share a common bus without interference.
• High-speed operation: With a propagation delay of only 6ns, this IC ensures efficient data transfer in time-critical applications.
• Wide operating voltage range: The 74ACTQ543QSCX can operate within a voltage range of 4.5V to 5.5V, making it compatible with various digital systems.

Advantages and Disadvantages

Advantages: - High-speed operation enables quick data transfer. - 3-state outputs allow for bus sharing and reduce interference. - Low power consumption contributes to energy efficiency. - Wide operating voltage range enhances compatibility.

Disadvantages: - Limited output drive capability may restrict use in certain applications. - Propagation delay of 6ns may not meet the requirements of extremely time-sensitive systems.

Working Principles

The 74ACTQ543QSCX operates based on the principle of transparent latching. When the latch enable (LE) signal is high, the data inputs (D0-D7) are transferred to the outputs (Q0-Q7) in real-time. The output enable (OE) signal controls the 3-state outputs, allowing them to be disabled when necessary.

Detailed Application Field Plans

The 74ACTQ543QSCX finds applications in various digital systems, including but not limited to: - Data storage and transfer in microprocessors - Address decoding in memory systems - Bus interfacing in communication devices - Control signal distribution in industrial automation

Detailed and Complete Alternative Models

1. 74ACTQ573QSCX: Octal transparent latch with 3-state outputs and inverted outputs.
2. 74ACTQ541QSCX: Octal buffer/line driver with 3-state outputs.
3. 74ACTQ244QSCX: Octal buffer/line driver with non-inverting 3-state outputs.

These alternative models offer similar functionality and can be considered as substitutes for the 74ACTQ543QSCX depending on specific requirements.

In conclusion, the 74ACTQ543QSCX is a high-speed octal