All trademarks are the property of their respective owners.
DescriptionThe LSF0204-Q1 is automotive qualified four channel auto bidirectional voltage translatorthat operate from 0.8 V to 4.5 V (Vref_A) and 1.8 V to 5.5 V (Vref_B). This range allows forbidirectional voltage translations between 0.8 V and 5.5 V without the need for a directionpin.
When the An or Bn port is LOW, the switch is in the ON-state and a low resistanceconnection exists between the An and Bn ports. The low Ron of the switchallows connections to be made with minimal propagation delay and minimal signal distortion. Thevoltage on the A or B side will be limited to Vref_A and can be pulled up to any level betweenVref_A and 5.5 V
The supply voltage (VPUn) for each channel may be individuallyset up with a pull up resistor. For example, CH1 may be used in up-translation mode (1.2 V ? 3.3 V)and CH2 in down-translation mode (2.5 V ? 1.8 V).
When EN is HIGH, the translator switch is on, and the An I/O is connected to the Bn I/O,respectively, allowing bidirectional data flow between ports. When EN is LOW, the translator switchis off, and a high-impedance state exists between ports. The EN input circuit is designed to besupplied by Vref_A. EN must be LOW to ensure the high-impedance state during power-up orpower-down.
Feature
- AEC-Q100 Qualified for Automotive Applications
- Temperature Grade 1: –40°C ≤ TA ≤125°C
- Device HBM ESD Classification Level2
- CDM ESD Classification Level C6
- Provides Auto-BidirectionalVoltage Translation Without Direction Pin
- Supports Opendrain or Push-pull Applications such as I2C, I2S, SPI, UART, JTAG, MDIO,SDIO, and GPIO
- Supports up to 100-MHz Up Translation and Greater Than 100-MHz Down Translationat ≤ 30-pF Capacitor Load and up to 40-MHz Up/Down Translation at 50-pF CapacitorLoad
- Supports Ioff, Partial Power Down Mode (SeeFeature Description)
- Allows Bidirectional Voltage Level Translation Between
- 0.95 V ? 1.8, 2.5, 3.3, 5.5 V
- 1.2 V ? 1.8, 2.5, 3.3, 5.5 V
- 1.8 V ? 2.5, 3.3, 5.5V
- 2.5 V ? 3.3, 5.5 V
- 3.3 V ? 5.5V
- 5-V Tolerance on I/O Ports
- Low Ron Enables Better Signal Integrity
- Flow-Through Pinout for Easy PCB Trace Routing
- Latch-UpPerformance Exceeds 100 mA Per JESD17
All trademarks are the property of their respective owners.
DescriptionThe LSF0204-Q1 is automotive qualified four channel auto bidirectional voltage translatorthat operate from 0.8 V to 4.5 V (Vref_A) and 1.8 V to 5.5 V (Vref_B). This range allows forbidirectional voltage translations between 0.8 V and 5.5 V without the need for a directionpin.
When the An or Bn port is LOW, the switch is in the ON-state and a low resistanceconnection exists between the An and Bn ports. The low Ron of the switchallows connections to be made with minimal propagation delay and minimal signal distortion. Thevoltage on the A or B side will be limited to Vref_A and can be pulled up to any level betweenVref_A and 5.5 V
The supply voltage (VPUn) for each channel may be individuallyset up with a pull up resistor. For example, CH1 may be used in up-translation mode (1.2 V ? 3.3 V)and CH2 in down-translation mode (2.5 V ? 1.8 V).
When EN is HIGH, the translator switch is on, and the An I/O is connected to the Bn I/O,respectively, allowing bidirectional data flow between ports. When EN is LOW, the translator switchis off, and a high-impedance state exists between ports. The EN input circuit is designed to besupplied by Vref_A. EN must be LOW to ensure the high-impedance state during power-up orpower-down.
