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您好,不好意思,是的,AM26LS32A是5V供电的,Vih(min)是满足3.3V的情况,但是高电平最大值不能满足。
所以如果DSP或者FPGA是3.3V供电的话,建议您使用AM26LV32E这款,和AM26LS32A 是pin to pin兼容的,只是AM26LV32E是3.3V供电的。