Encyclopedia Entry: 74ACT823SCX

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic Device
• Characteristics: High-speed, low-power octal D-type flip-flop with 3-state outputs
• Package: Surface Mount (SCX)
• Essence: Flip-flops are fundamental building blocks in digital circuits, used for storing and transferring binary information.
• Packaging/Quantity: The 74ACT823SCX is typically sold in reels or tubes containing multiple units.

Specifications

The 74ACT823SCX is a high-performance octal D-type flip-flop designed for use in various digital logic applications. It operates at a voltage range of 4.5V to 5.5V and offers fast propagation delay times, making it suitable for high-speed data transfer.

Key specifications include:

• Number of Flip-Flops: 8
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Clock Frequency: 100 MHz
• Propagation Delay Time: 6 ns (typical)

Detailed Pin Configuration

The 74ACT823SCX has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

1. CLR (Clear) - Active LOW clear input
2. D0-D7 (Data Inputs) - Eight individual data inputs
3. CP (Clock Pulse) - Clock input for flip-flop operation
4. OE (Output Enable) - Active LOW output enable input
5. Q0-Q7 (Outputs) - Eight individual flip-flop outputs
6. GND (Ground) - Ground reference
7. NC (No Connection) - No connection
8. VCC (Supply Voltage) - Positive power supply

Functional Features

The 74ACT823SCX offers several functional features that enhance its usability in digital logic circuits:

1. Octal Flip-Flop: The IC contains eight individual D-type flip-flops, allowing for simultaneous storage and transfer of eight bits of binary information.
2. 3-State Outputs: The outputs (Q0-Q7) can be put into a high-impedance state using the OE input, enabling easy bus sharing and reducing contention issues.
3. Clear Function: The CLR input allows for clearing all flip-flops to a known state when activated.
4. High-Speed Operation: With a maximum clock frequency of 100 MHz and low propagation delay times, the IC enables efficient data processing in time-critical applications.

Advantages and Disadvantages

Advantages of the 74ACT823SCX include:

• High-speed operation
• Low power consumption
• 3-state outputs for bus sharing

Disadvantages of the 74ACT823SCX include:

• Limited number of flip-flops (8)
• Requires external clock signal for proper operation

Working Principles

The 74ACT823SCX operates based on the principles of sequential logic. Each flip-flop within the IC stores a single bit of binary information. On each rising edge of the clock pulse, the input data is transferred to the corresponding output, allowing for synchronous data transfer. The clear input (CLR) resets all flip-flops to a known state when activated.

Detailed Application Field Plans

The 74ACT823SCX finds application in various digital systems, including but not limited to:

1. Microprocessors: Used for register storage and data transfer between different components of a microprocessor.
2. Data Communication: Enables efficient data buffering and synchronization in communication systems.
3. Memory Systems: Facilitates address decoding and control signal generation in memory modules.
4. Digital Control Systems: Used for state storage and synchronization in control systems.

Detailed and Complete Alternative Models

Alternative models that offer similar functionality to the 74ACT823SCX include:

1. SN74LS373: Octal D-type transparent latch with 3-state outputs
2. CD4013B: Dual D-type flip-flop with set and reset inputs
3. MC74HC574A: Octal D-type flip-flop with 3-state outputs

These alternative models can be considered based on specific application requirements and availability.

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