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SN74HCT541: The P11 pin output waveform of SN74HCT541 is abnormal

Part Number: SN74HCT541

Tool/software:

Hi,

During the use of SN74HCT541, the output waveform of pin 11 is abnormal due to slightly higher temperature. Put the problematic chip into the oven and set the temperature to 50 degrees, and similar problems can be reproduced. After cooling, the chip can resume normal function. Please help analyze the reason.

The schematic diagram is as follows:

The left side of the diagram shows the waveform of the problem after heating the chip at 50 degrees, while the right side shows the normal waveform after temperature cooling;

Thanks!