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SN74AHC540: CMOS器件闩锁目前存在两个问题

目前存在两个问题:芯片供电引脚串电阻,芯片不发烫了,但是芯片有没有进入闩锁?通过下图清楚串电阻实际是限制了VCC与GND之间的电流,所以芯片不会发烫了.

第二个问题:在信号MX与GND之间串100R电阻,芯片也不发烫了,能否解释下原因?