Diodes Incorporated
Back to Voltage Translation Master Table


Automotive Compliant 4-Bit Bi-Directional Level Translator Open-Drain And Push-Pull Applications

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The LSF0204Q is an automotive 4-channel bidirectional multi-voltage level translator for open-drain and push-pull applications. This device is a universal level translator with A port operating from 0.8V to 4.5V (Vref_A) and B port from 1.8V to 5.5V (Vref_B). This range allows for bidirectional voltage translations between 0.8V and 5.0V. Be aware that Vref_B is recommended to be at 1.0V higher than Vref_A for the best signal integrity.

The EN pin is used to activate the device. When EN is HIGH, the translator switch is on. Otherwise, if EN is LOW, the translator switch is off, and a high-impedance state exists between ports. The EN input circuit is designed to be supplied by Vref_A. EN must be LOW to ensure the high-impedance state during power-up or power-down to avoid misoperation.

Please note that an external Rpu (pullup resistor) is required on port A and B for push-pull and open-drain application because a pull-high state can avoid misoperation during the power sequence. About the Rpu, the smaller value can result in the larger driving current. Overall, the LSF0204Q is designed for easy-to-use with auto direction. So, there is no need for a direction pin to minimize system effort. This device supports 5V tolerant I/O pins for compatibility with TTL levels in a variety of applications which require a proper voltage translation.


  • External Rpu (Pullup Resistor) to Set Driving Current in Both
  • Push-Pull and Open-Drain Applications
  • Up & Down Translation
    • ≤ 100MHz; CL = 15pF, 30pF
    • ≤ 50MHz; CL = 50pF
  • Bidirectional Voltage Level Translation Between:
    • 8V and 1.8V, 2.5V, 3.3V and 5.0V
    • 2V and 1.8V, 2.5V, 3.3V and 5.0V
    • 8V and 2.5V, 3.3V and 5.0V
    • 5V and 3.3V and 5.0V
    • 3V and 5.0V
  • ESD Protection Exceeds JESD 22
    • 2000V HBM (A114)
    • 1000V CDM (C101)
  • Latchup Exceeds 100mA per JESD 17
  • AEC-Q100 Grade 1 Specified from -40°C to +125°C
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • The LSF0204Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities. https://www.diodes.com/quality/product-definitions/


  • PMBus™, SMBus™, I2C, and other interfaces
  • Digital infotainment clusters
  • Advanced driver assistance systems (ADAS)
  • High-performance vehicle computing vision
  • HEV/EV battery management systems

Product Specifications

Product Parameters

Ambient or Junction Temperature (°C) -40 to 125
Compliance (Only Automotive supports PPAP) Automotive
Translation From (V) 0.8 to 4.5
Translation To (V) 1.8 to 5.5
Max Signal Rate 100MHz
Bits Needed 4
Auto-direction Voltage Translators Sensing? Yes
Prop Delay (ns) 0.9

Technical Documents

Recommended Soldering Techniques