Encyclopedia Entry: 74ACT823SC

Product Overview

Category

The 74ACT823SC belongs to the category of integrated circuits (ICs) and specifically falls under the family of digital logic devices.

Use

This IC is commonly used in electronic systems for various applications such as data processing, signal manipulation, and control functions.

Characteristics

• The 74ACT823SC is a high-speed octal D-type flip-flop with 3-state outputs.
• It operates on a wide voltage range, typically between 2.0V and 6.0V.
• This IC offers excellent noise immunity and low power consumption.
• It is designed to provide reliable and efficient performance in demanding digital circuitry.

Package

The 74ACT823SC is available in a standard 20-pin small-outline package (SOIC), which ensures easy integration into circuit boards.

Essence

The essence of the 74ACT823SC lies in its ability to store and manipulate digital information, making it an essential component in modern electronic systems.

Packaging/Quantity

This IC is typically sold in reels or tubes containing multiple units, with each reel or tube containing a specific quantity, usually ranging from 100 to 1000 units.

Specifications

• Supply Voltage: 2.0V - 6.0V
• Logic Family: ACT
• Number of Flip-Flops: 8
• Output Type: 3-state
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 5 ns (max)
• Input Capacitance: 4 pF (typ)
• Output Current: ±24 mA (max)

Detailed Pin Configuration

The 74ACT823SC has a total of 20 pins, each serving a specific function. Here is the detailed pin configuration:

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 outputs
6. GND (Ground) - Ground reference
7. NC (No Connection) - No internal connection
8. VCC (Supply Voltage) - Positive supply voltage

Functional Features

• The 74ACT823SC operates as an octal D-type flip-flop, capable of storing and transferring digital data.
• It features 3-state outputs, allowing multiple devices to share a common bus without interference.
• The IC incorporates a clear input (CLR) for synchronous clearing of all flip-flops.
• An output enable input (OE) is provided to control the state of the outputs.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data processing in time-critical applications.
• Wide operating voltage range allows compatibility with various power supply levels.
• Excellent noise immunity ensures reliable performance in noisy environments.
• Low power consumption contributes to energy-efficient designs.

Disadvantages

• Limited number of flip-flops may restrict its use in complex systems requiring a higher count.
• Lack of built-in protection features against electrical faults or ESD events.

Working Principles

The 74ACT823SC operates based on the principles of sequential logic. It utilizes clock signals to synchronize the transfer of data into the flip-flops. When the clock pulse (CP) transitions from low to high, the data present at the inputs (D0-D7) is captured and stored in the corresponding flip-flops. The stored data can then be accessed through the outputs (Q0-Q7) when the output enable (OE) signal is active. The clear input (CLR) allows for synchronous clearing of all flip-flops, resetting them to a known state.

Detailed Application Field Plans

The 74ACT823SC finds applications in various fields where digital logic is required. Some specific application areas include:

1. Microprocessor Systems: The IC can be used as a register or buffer to interface between the microprocessor and other peripheral devices.
2. Data Communication: It can be employed in data transmission systems to store and manipulate data during signal processing.
3. Control Systems: The IC can be utilized in control circuits to store and synchronize control signals for precise timing and sequencing.
4. Memory Addressing: It can serve as an address latch in memory systems, facilitating efficient addressing of memory locations.

Detailed and Complete Alternative Models

• 74HC823: Similar octal D-type flip-flop with 3-state outputs, operating at a lower voltage range of 2.0V - 6.0V.
• 74LS823: Octal D-type flip-flop with 3-state outputs, compatible with TTL logic levels and operating at a wider voltage range of 4.75V -