Overview
The LSF0204-Q1 is an automotive-qualified, four-channel auto-bidirectional voltage translator produced by Texas Instruments. This device is designed to operate in a wide voltage range, from 0.8 V to 4.5 V (Vref_A) and 1.8 V to 5.5 V (Vref_B), allowing for bidirectional voltage translation without the need for a direction pin. It is ideal for applications where devices or systems operate at different interface voltages, such as in infotainment systems, graphical clusters, ADAS (Advanced Driver-Assistance Systems), and HEV (Hybrid Electric Vehicle) battery management systems.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Reference Voltage (Vref_A) | 0.8 | 4.5 | V | |
| Reference Voltage (Vref_B) | Vref_A + 0.8 | 5.5 | V | |
| Input Voltage on EN Terminal (VI(EN)) | 0 | Vref_A | V | |
| Pull-up Supply Voltage (Vpu) | 0 | Vref_B | V | |
| Propagation Delay Time (tPLH) | 0.3 | 3.8 | 7.25 | ns |
| Propagation Delay Time (tPHL) | 0.6 | 4.3 | 7.03 | ns |
| Maximum Frequency (fMAX) | 100 | MHz | ||
| Operating Temperature | -40 | 125 | °C | |
| Package | TSSOP (14) | |||
| Body Size | 5.00 mm × 4.40 mm |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C ≤ TA ≤ 125°C.
- Auto-bidirectional voltage translation without the need for a direction pin.
- Operates from 0.8 V to 4.5 V (Vref_A) and 1.8 V to 5.5 V (Vref_B).
- 5-V tolerance on I/O ports.
- Low Ron enables better signal integrity.
- Flow-through pinout for easy PCB trace routing.
- Latch-up performance exceeds 100 mA per JESD17.
- Supports multiple high-speed translation interfaces such as I2C, I2S, SPI, UART, SDIO, and GPIO.
- Channel-specific translation using specific pull-up voltage on each I/O channel.
- No power sequence requirements; EN logic circuit is referenced to Vref_A supply.
Applications
- Infotainment head units.
- Graphical clusters.
- ADAS fusion and front camera systems.
- HEV battery management systems.
- I2S, JTAG, SPI, SDIO, UART, I2C, MDIO, PMBus, SMBus, and other interfaces.
Q & A
- What is the operating voltage range for the LSF0204-Q1?
The LSF0204-Q1 operates from 0.8 V to 4.5 V (Vref_A) and 1.8 V to 5.5 V (Vref_B).
- What are the key applications of the LSF0204-Q1?
The LSF0204-Q1 is used in infotainment head units, graphical clusters, ADAS systems, HEV battery management systems, and various high-speed interfaces like I2S, SPI, and UART.
- Is the LSF0204-Q1 AEC-Q100 qualified?
- What is the maximum frequency supported by the LSF0204-Q1?
The LSF0204-Q1 supports a maximum frequency of up to 100 MHz.
- Does the LSF0204-Q1 require a direction pin for voltage translation?
No, the LSF0204-Q1 does not require a direction pin for voltage translation; it operates in auto-bidirectional mode.
- What is the package type and body size of the LSF0204-Q1?
The LSF0204-Q1 comes in a TSSOP (14) package with a body size of 5.00 mm × 4.40 mm.
- What are the key features of the LSF0204-Q1 in terms of signal integrity?
The LSF0204-Q1 features low Ron, which enables better signal integrity, and supports multiple high-speed translation interfaces.
- How does the EN input control the LSF0204-Q1?
The EN input controls the device by setting it to HIGH to enable the translator switch and to LOW to place all I/Os in the high-impedance state.
- Are there any specific layout guidelines for using the LSF0204-Q1?
- Does the LSF0204-Q1 support partial power-down mode?
