Encyclopedia Entry: 74ACQ574SCX

Product Overview

Category

The 74ACQ574SCX belongs to the category of integrated circuits (ICs) and specifically falls under the family of flip-flops.

Use

This IC is commonly used in digital electronic systems for storing and manipulating binary data. It is primarily employed in applications that require sequential logic, such as data storage, registers, counters, and shift registers.

Characteristics

• The 74ACQ574SCX is a high-speed octal D-type flip-flop with a transparent latch.
• It operates on a wide voltage range, typically between 2V and 6V.
• This IC offers excellent noise immunity due to its Schmitt-trigger inputs.
• It features a symmetrical output impedance, making it suitable for both TTL and CMOS driving circuits.
• The device is designed to be compatible with various logic families, including LSTTL, HCMOS, and LVCMOS.

Package and Quantity

The 74ACQ574SCX is available in a small-outline integrated circuit (SOIC) package. It consists of 20 pins and is surface-mountable. The IC is typically sold in reels or tubes, with quantities varying depending on the supplier.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• Output Drive Capability: 10mA at 4.5V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 7ns (max)

Pin Configuration

The 74ACQ574SCX has a total of 20 pins, each serving a specific function. The pin configuration is 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 (CLK)
10. Pin 10: Output Enable (OE)
11. Pin 11: Latch Enable (LE)
12. Pin 12: Ground (GND)
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

The 74ACQ574SCX offers the following functional features:

• Transparent latch with eight D-type flip-flops.
• High-speed operation, making it suitable for time-critical applications.
• Schmitt-trigger inputs for improved noise immunity.
• Output enable and latch enable control for flexible data storage and retrieval.
• Symmetrical output impedance for compatibility with various logic families.

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data processing.
• Wide voltage range enables compatibility with different power supply systems.
• Excellent noise immunity ensures reliable performance in noisy environments.
• Versatile compatibility with multiple logic families simplifies integration into existing systems.

Disadvantages

• Limited output drive capability may restrict its use in certain high-current applications.
• Surface-mount package may require specialized equipment for soldering and replacement.

Working Principles

The 74ACQ574SCX operates based on the principles of sequential logic. It utilizes flip-flops to store and manipulate binary data. The transparent latch allows data to be latched onto the outputs when the latch enable (LE) signal is active. The clock input (CLK) controls the timing of data storage, while the output enable (OE) signal enables or disables the outputs.

Application Field Plans

The 74ACQ574SCX finds applications in various digital electronic systems, including but not limited to:

1. Data storage systems: Used as registers or memory elements.
2. Counters and frequency dividers: Employed to count events or divide clock frequencies.
3. Shift registers: Utilized for serial-to-parallel or parallel-to-serial data conversion.
4. Control systems: Integrated into control circuits for sequential operations.
5. Communication systems: Facilitates data buffering and synchronization.

Alternative Models

For those seeking alternatives to the 74ACQ574SCX, the following ICs can be considered:

1. 74HC574: A