74F245SJX

Product Overview

Category

The 74F245SJX belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for signal level shifting and bus interface applications.

Characteristics

• High-speed operation
• Wide voltage range compatibility
• Bidirectional data transfer capability
• Non-inverting outputs
• 3-state outputs for bus-oriented applications

Package

The 74F245SJX is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of the 74F245SJX lies in its ability to efficiently shift signal levels and facilitate communication between different voltage domains.

Packaging/Quantity

The 74F245SJX is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply Voltage: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 10ns
• Maximum Output Current: ±24mA

Detailed Pin Configuration

The 74F245SJX has a total of 20 pins, which are assigned specific functions as follows:

1. DIR (Direction Control)
2. OE (Output Enable)
3. A1 (Input/Output)
4. B1 (Input/Output)
5. A2 (Input/Output)
6. B2 (Input/Output)
7. A3 (Input/Output)
8. B3 (Input/Output)
9. A4 (Input/Output)
10. B4 (Input/Output)
11. GND (Ground)
12. B5 (Input/Output)
13. A5 (Input/Output)
14. B6 (Input/Output)
15. A6 (Input/Output)
16. B7 (Input/Output)
17. A7 (Input/Output)
18. VCC (Supply Voltage)
19. DIR (Direction Control)
20. OE (Output Enable)

Functional Features

• Bidirectional data transfer: The 74F245SJX allows for seamless data transfer in both directions, making it suitable for bidirectional communication systems.
• Non-inverting outputs: The IC ensures that the output signals maintain the same logic level as the input signals.
• 3-state outputs: The 74F245SJX offers 3-state outputs, enabling bus-oriented applications where multiple devices can share a common bus.

Advantages and Disadvantages

Advantages

• High-speed operation: The IC operates at high speeds, facilitating efficient data transfer.
• Wide voltage range compatibility: It is compatible with a wide range of input and output voltage levels.
• Bidirectional capability: The ability to transfer data bidirectionally simplifies system design.

Disadvantages

• Limited output current: The maximum output current of ±24mA may not be sufficient for certain high-current applications.
• Temperature limitations: The operating temperature range of -40°C to +85°C may restrict its use in extreme temperature environments.

Working Principles

The 74F245SJX utilizes a combination of transistors and logic gates to achieve signal level shifting and bus interface functionality. It employs a direction control pin (DIR) to determine the direction of data flow and an output enable pin (OE) to enable or disable the outputs.

Detailed Application Field Plans

The 74F245SJX finds application in various fields, including:

1. Microcontroller interfacing: It enables communication between microcontrollers operating at different voltage levels.
2. Data acquisition systems: The IC facilitates the transfer of analog and digital signals between different parts of a data acquisition system.
3. Industrial automation: It is used in industrial control systems to interface between different components and subsystems.

Detailed and Complete Alternative Models

1. 74HC245: This IC offers similar functionality but operates at a lower voltage range (2V to 6V).
2. SN74LVC245A: It provides bidirectional level shifting with a wider operating voltage range (1.65V to 5.5V).

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

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