SN74HC645N

Product Overview

Category

SN74HC645N belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for signal level shifting and voltage translation in various electronic devices.

Characteristics

• High-speed operation
• Wide voltage range compatibility
• Low power consumption
• High noise immunity
• Easy integration into circuit designs

Package

SN74HC645N is available in a 20-pin DIP (Dual Inline Package) format.

Essence

The essence of SN74HC645N lies in its ability to efficiently shift and translate signals between different voltage levels, ensuring seamless communication between different components within an electronic system.

Packaging/Quantity

SN74HC645N is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 50 MHz
• Number of Pins: 20
• Logic Family: HC

Detailed Pin Configuration

1. A1 - Input/Output Pin
2. B1 - Input/Output Pin
3. A2 - Input/Output Pin
4. B2 - Input/Output Pin
5. A3 - Input/Output Pin
6. B3 - Input/Output Pin
7. A4 - Input/Output Pin
8. B4 - Input/Output Pin
9. GND - Ground Pin
10. OE - Output Enable Pin
11. DIR - Direction Control Pin
12. VCC - Power Supply Pin
13. B5 - Input/Output Pin
14. A5 - Input/Output Pin
15. B6 - Input/Output Pin
16. A6 - Input/Output Pin
17. B7 - Input/Output Pin
18. A7 - Input/Output Pin
19. B8 - Input/Output Pin
20. A8 - Input/Output Pin

Functional Features

• Bidirectional voltage translation between two different voltage domains
• Automatic direction control based on the DIR pin
• Output enable/disable functionality using the OE pin
• High-speed operation for efficient signal transmission
• Wide compatibility with various logic families

Advantages and Disadvantages

Advantages

• Efficient voltage level shifting capability
• Easy integration into circuit designs
• Low power consumption
• High noise immunity
• Wide voltage range compatibility

Disadvantages

• Limited maximum operating frequency (50 MHz)
• Availability may vary depending on the supplier

Working Principles

SN74HC645N operates by receiving input signals from one voltage domain, translating them to the desired voltage level, and then outputting the translated signals to another voltage domain. The direction of translation is controlled by the DIR pin, while the OE pin enables or disables the output.

Detailed Application Field Plans

SN74HC645N finds applications in various electronic systems where voltage translation is required. Some common application fields include:

1. Communication Systems: Used for voltage level shifting in communication interfaces such as UART, SPI, and I2C.
2. Microcontroller Interfacing: Facilitates communication between microcontrollers operating at different voltage levels.
3. Sensor Networks: Enables seamless integration of sensors operating at different voltage domains.
4. Industrial Automation: Used in PLCs (Programmable Logic Controllers) for interfacing with different modules and devices.
5. Consumer Electronics: Voltage translation between different components in devices like smartphones, tablets, and gaming consoles.

Detailed and Complete Alternative Models

1. SN74LVC245A
2. SN74LVCH245A
3. SN74HCT645N
4. SN74LVC1T45DBVR
5. SN74LVC1T45DCKR

These alternative models offer similar functionality and can be used as replacements for SN74HC645N in various applications.

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