Encyclopedia Entry: 74AC174SJ

Product Overview

Category

The 74AC174SJ 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 circuits for storing and manipulating binary data. It serves as a D-type positive-edge-triggered flip-flop.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with TTL (Transistor-Transistor Logic) inputs
• Output capability: standard

Package

The 74AC174SJ is available in a small outline package (SOP) with 16 pins.

Essence

The essence of the 74AC174SJ lies in its ability to store and transfer data within digital systems, enabling sequential logic operations.

Packaging/Quantity

The IC is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply voltage: 2V to 6V
• Input voltage: 0V to Vcc
• Operating temperature range: -40°C to +85°C
• Propagation delay time: 5 ns (max)
• Output current: ±24 mA

Detailed Pin Configuration

The 74AC174SJ has 16 pins arranged as follows:

┌───┐ CLR ─┤1 16├ Vcc D0 ─┤2 15├ Q0 D1 ─┤3 14├ Q1 D2 ─┤4 13├ Q2 D3 ─┤5 12├ Q3 CP ─┤6 11├ Q4 GND ─┤7 10├ Q5 D4 ─┤8 9├ Q6 └───┘

Functional Features

• Positive-edge-triggered operation: The flip-flop captures and stores the input data (D) on the rising edge of the clock pulse (CP).
• Clear function (CLR): When CLR is set to low, it resets all outputs (Q) to zero.
• Wide operating voltage range: The IC can operate within a voltage range of 2V to 6V, making it suitable for various digital systems.
• Compatibility with TTL inputs: The IC can accept TTL logic levels as inputs, ensuring compatibility with different circuit configurations.

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data processing.
• Low power consumption helps in reducing energy requirements.
• Wide operating voltage range provides flexibility in system design.
• Compatibility with TTL inputs enables integration with existing circuits.

Disadvantages

• Limited output current may restrict its use in certain applications requiring higher drive capabilities.
• Propagation delay time of 5 ns (max) may introduce timing constraints in high-frequency applications.

Working Principles

The 74AC174SJ operates based on positive-edge-triggered flip-flop principles. On the rising edge of the clock pulse, the input data (D) is captured and stored in the flip-flop. The stored data is then available at the corresponding output (Q). The clear function (CLR) allows for resetting all outputs to zero when required.

Detailed Application Field Plans

The 74AC174SJ finds application in various digital systems, including but not limited to: - Data storage and transfer in microcontrollers and microprocessors - Sequential logic circuits - Counters and registers - Communication systems - Control systems

Detailed and Complete Alternative Models

Some alternative models to the 74AC174SJ that serve similar functions include: - 74HC174: High-speed CMOS logic IC with similar pin configuration and functionality. - CD4013: Dual D-type flip-flop IC with complementary outputs. - SN74LS175: Quadruple D-type flip-flop IC with clear function.

These alternative models can be considered based on specific project requirements, availability, and cost considerations.

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