LSF0204PWR

The LSF series are bidirectional voltage level translators operating at voltages between 1.0V to 4.5V (Vref_A) and 1.8V to 5.5V (Vref_B). This device enables bidirectional voltage translation from 1.0V to 5.0V in open-drain or push-pull applications without requiring a direction terminal. For open-drain systems using 15pF capacitors and 165Ω pull-up resistors, the LSF series supports level translation applications with transmission speeds greater than 100MHz. When the An or Bn port is low, the switch is in the on state, and a low-resistance connection exists between the An and Bn ports. The low on-resistance (Ron) of the switch enables the connection with minimal propagation delay and signal distortion. The voltage at port A or port B will be clamped to Vref_A and can be pulled up to any voltage level between Vref_A and 5V. This feature enables seamless translation between user-selected higher and lower voltages without the need for direction control.

Applications

• GPIO, MDIO, PMBus, SMBus, SDIO, UART, I2C, and other interfaces in telecom infrastructure
• Industrial
• Automotive
• Personal computing

Key features

• Bidirectional voltage translation with direction-less terminals
• Maximum propagation delay less than 1.5ns
• High-speed switching support, greater than 100MHz
• Low standby current
• TTL-compatible 5V tolerant I/O ports
• Low on-resistance Ron for minimal signal distortion
• High-impedance I/O terminals when EN is low
• Straight-through pin assignment for simplified PCB routing
• Latch-up performance exceeding 100mA, compliant with JESD17
• Operating temperature range: -40℃ to 125℃
• ESD performance tested in compliance with JESD 22
• 2000V Human Body Model (A114-B, Class II)
• 200V Machine Model (A115-A)
• 1000V Charged Device Model (C101)