MC74ACT640DWR2G

Product Overview

• Category: Integrated Circuit
• Use: Logic Level Translator
• Characteristics: High-Speed, Octal Bus Transceiver
• Package: SOIC-20
• Essence: This integrated circuit is designed to provide bidirectional level translation between a 5V bus and a 3.3V bus in high-speed applications.
• Packaging/Quantity: The MC74ACT640DWR2G is available in tape and reel packaging with a quantity of 2500 units per reel.

Specifications

• Logic Family: ACT
• Number of Channels: 8
• Input Voltage: 2.0V to 6.0V
• Output Voltage: 2.0V to 6.0V
• Propagation Delay: 4.5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MC74ACT640DWR2G has a total of 20 pins. The pin configuration is as follows:

1. OE (Output Enable) 1
2. A1 (Data Input/Output) 1
3. B1 (Data Input/Output) 1
4. GND (Ground)
5. B2 (Data Input/Output) 2
6. A2 (Data Input/Output) 2
7. OE (Output Enable) 2
8. VCC (Supply Voltage)
9. B3 (Data Input/Output) 3
10. A3 (Data Input/Output) 3
11. OE (Output Enable) 3
12. NC (No Connection)
13. A4 (Data Input/Output) 4
14. B4 (Data Input/Output) 4
15. GND (Ground)
16. B5 (Data Input/Output) 5
17. A5 (Data Input/Output) 5
18. OE (Output Enable) 5
19. VCC (Supply Voltage)
20. B6 (Data Input/Output) 6

Functional Features

• Bidirectional level translation between a 5V bus and a 3.3V bus.
• High-speed operation with a propagation delay of 4.5ns.
• Output enable control for each channel.
• Wide operating voltage range from 2.0V to 6.0V.

Advantages and Disadvantages

Advantages: - Provides seamless level translation between different voltage buses. - High-speed operation allows for efficient data transfer. - Output enable control offers flexibility in managing the direction of data flow.

Disadvantages: - Limited to translating between 5V and 3.3V buses, may not be suitable for other voltage levels. - May require additional components for voltage regulation in certain applications.

Working Principles

The MC74ACT640DWR2G utilizes a combination of MOSFETs and logic gates to achieve bidirectional level translation. The input signals are converted to the appropriate voltage level using a voltage divider network, allowing seamless communication between the 5V and 3.3V buses. The output enable control enables or disables the data transmission on each channel, providing flexibility in managing the direction of data flow.

Detailed Application Field Plans

The MC74ACT640DWR2G is commonly used in various applications that require level translation between a 5V bus and a 3.3V bus. Some specific application fields include:

1. Microcontroller interfacing: Allows communication between microcontrollers operating at different voltage levels.
2. Industrial automation: Facilitates data exchange between different subsystems with varying voltage requirements.
3. Communication systems: Enables compatibility between devices operating at different logic levels, such as UART or SPI interfaces.
4. Embedded systems: Provides seamless integration of components with different voltage specifications.

Detailed and Complete Alternative Models

1. SN74ACT640NSR - Octal Bus Transceiver with 3-State Outputs
2. MC74ACT640NG - Octal Bus Transceiver with Inverting Outputs
3. CD74ACT640E - Octal Non-Inverting Bus Transceiver

These alternative models offer similar functionality to the MC74ACT640DWR2G and can be considered as alternatives based on specific application requirements.

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