Overview
The LSF0108-Q1, produced by Texas Instruments, is an automotive-grade 8-channel multi-voltage level translator. This device is designed for level-translation applications, enabling seamless communication between devices or systems operating at different supply voltages. It supports both open-drain and push-pull drivers and is particularly useful in applications requiring bidirectional voltage translation without the need for a direction pin. The LSF0108-Q1 is AEC-Q100 qualified, ensuring its reliability in automotive and other demanding environments.
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 | ||
| Junction Temperature (TJ) | 150 | °C | ||
| Storage Temperature (Tstg) | -65 | 150 | °C | |
| Operating Temperature Range | -40 | 125 | °C | |
| Reference Voltage (Vref_A) | 0.95 | 4.5 | V | |
| Reference Voltage (Vref_B) | 1.8 | 5.5 | V | |
| Propagation Delay (TPLH, TPHL) | 0.75 ns (TPLH), 0.9 ns (TPHL) | 1.8 ns (TPLH), 1.9 ns (TPHL) | ns | |
| Package Types | PW (TSSOP, 20-pin), RKS (VQFN, 20-pin) |
Key Features
- Auto Bidirectional Voltage Translation: Supports bidirectional voltage translation between 0.95 V and 5.5 V without a direction pin.
- High-Speed Operation: Can achieve speeds greater than 100 Mbps for open-drain systems using appropriate pull-up resistors and layout.
- Low Standby Current: Very low power consumption, especially when the device is disabled.
- High-Impedance I/O Pins: When the enable pin (EN) is low, all I/O pins are in a high-impedance state.
- Flow-Through Pin-Out: Facilitates easy PCB trace routing.
- Wettable Flanks: Available in some packages to improve side wetting after soldering.
- AEC-Q100 Qualified: Meets automotive standards with an HBM ESD classification level of 2000 V.
Applications
The LSF0108-Q1 is ideal for various applications, including:
- GPIO, MDIO, PMBus, SMBus, SDIO: In industrial and telecom applications where devices operate at different voltage levels.
- Automotive Systems: Qualified for automotive use, making it suitable for vehicle electronics and communication systems.
- Industrial Automation: For interfacing devices or systems with different supply voltages in industrial environments.
Q & A
- What is the primary function of the LSF0108-Q1?
The primary function of the LSF0108-Q1 is to perform bidirectional voltage level translation between devices or systems operating at different supply voltages. - What are the supported voltage ranges for Vref_A and Vref_B?
Vref_A supports 0.95 V to 4.5 V, and Vref_B supports 1.8 V to 5.5 V. - What is the maximum operating frequency of the LSF0108-Q1?
The device can operate at speeds greater than 100 Mbps with appropriate pull-up resistors and layout. - What are the package options available for the LSF0108-Q1?
The LSF0108-Q1 is available in PW (TSSOP, 20-pin) and RKS (VQFN, 20-pin) packages. - Is the LSF0108-Q1 qualified for automotive applications?
Yes, the LSF0108-Q1 is AEC-Q100 qualified, making it suitable for automotive use. - How does the enable pin (EN) function?
The enable pin (EN) is used to disable the device by setting it low, which places all I/Os in a high-impedance state. - What is the significance of wettable flanks in the LSF0108-Q1?
Wettable flanks improve side wetting after soldering, making QFN packages easier to inspect. - What is the maximum junction temperature for the LSF0108-Q1?
The maximum junction temperature is 150°C. - What is the storage temperature range for the LSF0108-Q1?
The storage temperature range is -65°C to 150°C. - Can the LSF0108-Q1 be used with both open-drain and push-pull drivers?
Yes, the LSF0108-Q1 supports both open-drain and push-pull drivers.
