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SN74AVC16244 使用问题

Other Parts Discussed in Thread: SN74AVC16244

你好

现在使用SN74AVC16244作为TTL信号的驱动IC ,问题描述如下,

 3V供电,使用6片,供电后发现  6P芯片总电流达到2A,供电电压降到2.5V,电流为1.5A ,请问芯片总功耗是如何计算的,为何会出现如此大的电流