SN74LVTH244APW

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: Low Voltage, High-Speed, Tri-State Outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Logic Level Translator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 200MHz
• Number of Channels: 8
• Output Current: ±12mA
• Propagation Delay Time: 2.5ns (Max)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVTH244APW has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) 1
2. A1 (Input) 1
3. I/O1 (Bidirectional I/O) 1
4. GND (Ground)
5. I/O2 (Bidirectional I/O) 2
6. A2 (Input) 2
7. OE (Output Enable) 2
8. VCC (Supply Voltage)
9. I/O3 (Bidirectional I/O) 3
10. A3 (Input) 3
11. I/O4 (Bidirectional I/O) 4
12. A4 (Input) 4
13. OE (Output Enable) 3
14. GND (Ground)
15. I/O5 (Bidirectional I/O) 5
16. A5 (Input) 5
17. I/O6 (Bidirectional I/O) 6
18. A6 (Input) 6
19. OE (Output Enable) 4
20. VCC (Supply Voltage)

Functional Features

• Logic Level Translation: The SN74LVTH244APW is designed to translate signals between different voltage levels, making it suitable for interfacing between devices operating at different voltage levels.
• Tri-State Outputs: The IC features tri-state outputs, allowing the user to disable the outputs when not needed, reducing power consumption and avoiding bus contention issues.
• High-Speed Operation: With a maximum operating frequency of 200MHz, the SN74LVTH244APW can handle high-speed data transmission.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - Tri-state outputs provide flexibility in controlling the output state. - High-speed operation enables efficient data transfer.

Disadvantages: - Limited number of channels (8) may not be sufficient for complex applications requiring more I/O lines. - Propagation delay time may introduce timing issues in certain high-speed applications.

Working Principles

The SN74LVTH244APW operates by receiving input signals on its bidirectional I/O pins and translating them to the desired output voltage level based on the supply voltage. The logic level translation is achieved through a combination of internal circuitry that ensures proper voltage conversion while maintaining signal integrity. The tri-state outputs allow the user to enable or disable the output drivers, preventing conflicts on shared bus lines.

Detailed Application Field Plans

The SN74LVTH244APW finds applications in various fields, including:

1. Microcontroller Interfacing: It can be used to interface microcontrollers operating at different voltage levels, enabling communication between different parts of a system.
2. Data Communication Systems: The IC facilitates voltage level translation in data communication systems, ensuring compatibility between devices with varying voltage requirements.
3. Industrial Automation: It can be employed in industrial automation systems to interface between different control modules operating at different voltage levels.
4. Automotive Electronics: The SN74LVTH244APW is suitable for use in automotive electronics, where it can enable communication between components with different voltage requirements.

Detailed and Complete Alternative Models

1. SN74LVC244A: Similar to the SN74LVTH244APW, but operates at a lower voltage range (1.65V to 3.6V).
2. SN74HCT244: A TTL-compatible alternative with higher output current capability (±24mA) but operates at a higher voltage range (4.5V to 5.5V).
3. SN74LV245A: A bidirectional octal bus transceiver with similar characteristics, but with direction control pins.

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