Encyclopedia Entry: 74AC374SJX

Product Overview

Category

The 74AC374SJX belongs to the category of integrated circuits (ICs), specifically flip-flops.

Use

This product is commonly used in digital electronics for storing and transferring data in sequential logic circuits.

Characteristics

• The 74AC374SJX 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 has a low power consumption, making it suitable for battery-powered devices.
• It offers excellent noise immunity and high-speed performance.

Package and Quantity

The 74AC374SJX is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• Maximum Operating Frequency: 100 MHz
• Output Drive Capability: 24 mA

Pin Configuration

The 74AC374SJX has a total of 20 pins, which are arranged as follows:

+----+--+----+ Q0 --|1 +--+ 20|-- VCC Q1 --|2 19|-- Q7 Q2 --|3 18|-- D7 Q3 --|4 17|-- D6 Q4 --|5 16|-- D5 Q5 --|6 15|-- D4 Q6 --|7 14|-- D3 Q7 --|8 13|-- D2 GND --|9 12|-- D1 CP --|10 11|-- D0 +------------+

Functional Features

• The 74AC374SJX has eight flip-flops that can store individual bits of data.
• It features a transparent latch, allowing the input data to be directly transferred to the outputs when the clock signal is active.
• The IC supports both parallel and serial data transfer modes.
• It offers asynchronous clear and preset inputs for resetting or setting the flip-flop outputs.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer in time-critical applications. - Wide voltage range allows compatibility with various digital systems. - Low power consumption makes it suitable for battery-powered devices. - Excellent noise immunity ensures reliable operation in noisy environments.

Disadvantages: - Limited output drive capability may restrict its use in certain high-current applications. - The small outline package may require careful handling during assembly.

Working Principles

The 74AC374SJX operates based on the principles of sequential logic. When the clock signal transitions from low to high, the input data is latched and stored in the flip-flops. The stored data is then available at the outputs until the next clock transition occurs.

Application Field Plans

The 74AC374SJX finds applications in various digital systems, including: - Microprocessors and microcontrollers - Data storage devices - Communication equipment - Industrial automation systems - Consumer electronics

Alternative Models

Other alternative models that offer similar functionality to the 74AC374SJX include: - 74HC374: A CMOS version with a wider supply voltage range. - 74LS374: A low-power Schottky TTL version with different electrical characteristics. - 74F374: A fast CMOS version with higher operating frequencies.

In conclusion, the 74AC374SJX is a versatile integrated circuit used for data storage and transfer in digital electronics. Its high-speed operation, wide voltage range, and low power consumption make it suitable for various applications across different industries.

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