Overview
The Texas Instruments LSF0108PWR is an octal auto-bidirectional multi-voltage level translator. This device is designed to facilitate bidirectional voltage translation between two different voltage domains without the need for a direction pin. It supports voltage translation between 0.95 V and 5.5 V, making it versatile for various applications involving different voltage levels.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (VI) | -0.5 | 7 | V | |
| Input-Output Voltage Range (VI/O) | -0.5 | 7 | V | |
| Continuous Channel Current | 128 | mA | ||
| Vref_A Voltage Range | 0.95 | 5.5 | V | |
| Vref_B Voltage Range | 1.8 | 5.5 | V | |
| Operating Temperature Range | -40 | 125 | °C | |
| Package Type | 20-TSSOP | |||
| Junction-to-Ambient Thermal Resistance (RθJA) | 108.8 | °C/W |
Key Features
- Auto-bidirectional voltage translation without a direction pin.
- Supports up to 100-MHz up translation and greater.
- Operates with Vref_A from 0.95 V to 5.5 V and Vref_B from 1.8 V to 5.5 V.
- Compatible with both push-pull and open-drain configurations.
- Low power consumption and high-speed data transmission.
- Enable input (EN) allows for easy control of the I/O pins.
Applications
- Level translation in mixed-voltage systems.
- Interface between different voltage domains in embedded systems.
- Communication between microcontrollers and peripherals operating at different voltage levels.
- Industrial control systems requiring voltage level translation.
- Consumer electronics where multiple voltage levels are used.
Q & A
- What is the primary function of the LSF0108PWR?
The primary function is to provide auto-bidirectional voltage translation between two different voltage domains without the need for a direction pin. - What is the voltage range supported by Vref_A and Vref_B?
Vref_A supports 0.95 V to 5.5 V, and Vref_B supports 1.8 V to 5.5 V. - What is the maximum continuous channel current?
The maximum continuous channel current is 128 mA. - What package type is the LSF0108PWR available in?
The LSF0108PWR is available in a 20-TSSOP package. - Can the LSF0108PWR be used in both push-pull and open-drain configurations?
Yes, it supports both push-pull and open-drain configurations. - How do you enable the I/O pins on the LSF0108PWR?
The I/O pins are enabled by tying the EN input directly to Vref_B during operation. - What is the recommended difference between Vref_B and Vref_A for best signal integrity?
Vref_B and VI(EN) are recommended to be 1.0 V higher than Vref_A for best signal integrity. - What is the significance of the junction-to-ambient thermal resistance (RθJA) in the LSF0108PWR?
The RθJA is 108.8 °C/W, indicating the thermal resistance from the junction to the ambient environment. - Can the LSF0108PWR handle high-speed data transmission?
Yes, it supports up to 100-MHz up translation and greater. - What are some common applications of the LSF0108PWR?
Common applications include level translation in mixed-voltage systems, interface between different voltage domains, and communication between microcontrollers and peripherals.
