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求助!LSF0108输入电压是多少输出电压就是多少

Other Parts Discussed in Thread: LSF0108

问题描述:

我使用LSF0108用于将FPGA产生 的3.3VPWM转换为5V,使用的电路如下图所示:

现在我直接给PWM_out_1A即LSF0108的三脚一个持续的3.3V高电平,在B1处开路测量依旧为3.3V,试过在A1、B1处分别或同时加上拉电阻,输出电压也没有变化,求大神指导!