市面上有74VHC138芯片3 至 8 线路解码器,但没有74VHC154这种4 至 16 线路解码器。我们经过测试74VHC版本的逻辑芯片非常符合我们的产品需求,74HC版本的逻辑芯片转换延迟太低了,为此我们花了2周时间测试。
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