Bi-directional voltage level translators operate from 0.95 to 4.5V and 1.8 to 5.5V

This post is sponsored by Texas Instruments. Texas Instruments (TI) has introduced the LSF family of bi-directional voltage level translators which are operational from 0.95 to 4.5V (Vref_A) and 1.8 to 5.5V (Vref_B). This allows bi-directional voltage translations between 1V and 5V without the need for a direction pin in open-drain or push-pull applications. LSF family supports level translation applications with transmission speeds greater than 100Mbps for open-drain systems using a 30pF capacitance and 250ohm pull-up resistor. 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 Ron of the switch allows connections to be made with minimal propagation delay and signal distortion. Assuming the higher voltage is on the Bn port when the Bn port is HIGH, the voltage on the An port is limited to the voltage set by Vref_A. When the An port is HIGH, the Bn port is pulled to the drain pull-up supply voltage (Vpu#) by the pull-up resistors. This functionality allows a seamless translation between higher and lower voltages selected by the user without the need for directional control.