Overview
The SN74LVTH245ADBRG4 is an octal bus transceiver manufactured by Texas Instruments. It is designed for asynchronous communication between data buses, enabling bidirectional data flow with 3-state outputs. This component is optimized for low-voltage (3.3 V) operation while maintaining compatibility with 5 V systems, making it suitable for mixed-voltage environments. Its key features include bus hold circuitry, Ioff protection, and support for hot insertion, ensuring robust performance in various applications. The SN74LVTH245ADBRG4 is ideal for use in industrial automation, telecommunications, and computing systems where reliable data transfer is critical.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Type | Bus Transceiver | - | Non-Inverting |
| Number of Channels | 8 | - | Bidirectional |
| Output Type | 3-State | - | High-Z when disabled |
| Supply Voltage | 2.7 to 3.6 | V | 3.3 V typical |
| Operating Temperature | -40 to 85 | °C | Industrial range |
| Bus Hold | Yes | - | Eliminates external pull-up/down resistors |
| Ioff Protection | Yes | - | Prevents current backflow during power-off |
| Hot Insertion Support | Yes | - | Ensures safe operation during insertion |
| Package | TSSOP-20 | - | Surface mount |
Key Features
- Supports mixed-mode signal operation (3.3 V and 5 V compatibility).
- Bus hold circuitry maintains logic levels on unused inputs.
- Ioff and power-up 3-state support for hot insertion.
- ESD protection exceeds JESD 22 standards.
- Bidirectional data flow with direction control.
Applications
The SN74LVTH245ADBRG4 is widely used in applications requiring reliable data transfer across mixed-voltage systems. It is commonly employed in:
- Industrial Automation: Facilitates communication between control systems and peripherals.
- Telecommunications: Ensures robust data transmission in networking equipment.
- Computing Systems: Enables efficient data transfer in motherboards and peripheral interfaces.
- Automotive Electronics: Supports data communication in vehicle control systems.
Q & A
1. What is the operating voltage range of the SN74LVTH245ADBRG4?
The operating voltage range is 2.7 V to 3.6 V, with a typical supply voltage of 3.3 V.
2. Does this component support bidirectional data transfer?
Yes, it supports bidirectional data flow controlled by the DIR input.
3. What is the purpose of the bus hold feature?
Bus hold circuitry maintains logic levels on unused inputs, eliminating the need for external pull-up or pull-down resistors.
4. Is the SN74LVTH245ADBRG4 compatible with 5 V systems?
Yes, it is designed to interface with 5 V systems while operating at 3.3 V.
5. What is the significance of Ioff protection?
Ioff protection prevents current backflow through the device when it is powered off, ensuring safety and reliability.
6. Can this component be used in hot-swappable applications?
Yes, it supports hot insertion with Ioff and power-up 3-state features.
7. What is the package type of the SN74LVTH245ADBRG4?
It is available in a TSSOP-20 surface-mount package.
8. What is the maximum operating temperature?
The maximum operating temperature is 85°C.
9. Does this component have ESD protection?
Yes, it provides ESD protection exceeding JESD 22 standards.
10. What are the typical applications of this transceiver?
Typical applications include industrial automation, telecommunications, computing systems, and automotive electronics.
