SN74LVTH244ADWR

Product Overview

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

Specifications

• Supply Voltage Range: 2.7V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 4.1ns (typical)
• Output Drive Capability: ±24mA
• Number of Channels: 8

Pin Configuration

The SN74LVTH244ADWR has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) 1
2. A1 (Input) 1
3. I/O1 (Bidirectional) 1
4. GND (Ground)
5. I/O2 (Bidirectional) 2
6. A2 (Input) 2
7. OE (Output Enable) 2
8. VCC (Supply Voltage)
9. I/O3 (Bidirectional) 3
10. A3 (Input) 3
11. I/O4 (Bidirectional) 4
12. GND (Ground)
13. I/O5 (Bidirectional) 5
14. A4 (Input) 4
15. OE (Output Enable) 3
16. VCC (Supply Voltage)
17. I/O6 (Bidirectional) 6
18. A5 (Input) 5
19. I/O7 (Bidirectional) 7
20. I/O8 (Bidirectional) 8

Functional Features

• Tri-State Outputs: The SN74LVTH244ADWR features tri-state outputs, allowing the device to be effectively disconnected from the bus when not in use.
• High-Speed Operation: With a propagation delay time of only 4.1ns, this IC ensures fast and efficient signal transmission.
• Low Voltage Operation: Designed to operate at low voltage levels (2.7V to 3.6V), making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - Tri-state outputs provide flexibility in bus sharing applications. - High-speed operation enables quick data transfer. - Low voltage operation reduces power consumption.

Disadvantages: - Limited supply voltage range may restrict compatibility with certain systems. - Not suitable for high-voltage applications.

Working Principles

The SN74LVTH244ADWR is a logic level shifter that allows bidirectional voltage translation between different voltage domains. It operates by receiving input signals from one voltage domain and translating them to the corresponding voltage level in another domain. The tri-state outputs enable the device to be disconnected from the bus when not actively driving it, preventing any interference or contention on the shared bus.

Detailed Application Field Plans

The SN74LVTH244ADWR is commonly used in various applications, including:

1. Microcontroller Interfacing: It facilitates communication between microcontrollers operating at different voltage levels.
2. Memory Systems: It can be employed in memory modules to interface between different memory devices and controllers.
3. Communication Interfaces: The IC is suitable for voltage level translation in UART, SPI, and I2C interfaces.
4. Industrial Automation: It finds application in industrial control systems where different voltage levels need to be interfaced.

Detailed and Complete Alternative Models

1. SN74LVC244A: Similar to SN74LVTH244ADWR, but operates at a wider supply voltage range of 1.65V to 5.5V.
2. SN74HCT244: A TTL-compatible alternative with higher output drive capability and wider supply voltage range (4.5V to 5.5V).
3. SN74LV1T34: Single-channel level shifter suitable for low-voltage applications.

These alternative models offer similar functionality but may have different specifications and pin configurations. The choice depends on specific requirements and system constraints.

In conclusion, the SN74LVTH244ADWR is a versatile logic level shifter IC that enables bidirectional voltage translation between different voltage domains. Its tri-state outputs, high-speed operation, and low voltage characteristics make it suitable for various applications in microcontroller interfacing, memory systems, communication interfaces, and industrial automation. Alternative models provide flexibility based on specific needs.