4 Example Application 1: PWM with Filter

One application where the LVxT family can be useful is in PWM translation. In this example, the amplifier accepts a 3.3-V PWM into its input filter, but the MCU can only supply 1.8 V from its GPIOs. The SN74LV1T34 is used in this example to translate the PWM signal to a 3.3-V level. It also serves to isolate the MCU from excess line capacitance, making the signal cleaner at higher speeds.

Figure 4-1 Example schematic for SN74LV1T34 PWM buffer circuit