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SN74LVCH16T245做MII接口的电平转换存在时序问题

Other Parts Discussed in Thread: SN74LVCH16T245, SN74AVC16T245

现在是在Xinlinx V7的fpga和网络PHY芯片88E1111之间连MII接口,fpga的管脚电平是1.8V,88E1111的IO电平是2.5V,需要做电平转换,现在选择SN74LVCH16T245做电平转换。MII接口的数据速率是25MHz。SN74LVCH16T245手册给出了input transition rise or fall rate 和 tpLH tpHL。想问一下能满足实际的使用要求吗。包括驱动器上每对输入输出之间tpLH和tpHL之间的一致性,手册上给了一个很宽的范围,还有就是能否满足速率的要求。