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SN74HC164: SN74HC164:

Part Number: SN74HC164

SN74HC164DR   同个批次  第一行    TI    39AVZLK   


SN74HC164DR  客户反馈换回原来 带花的 就没有问题(22年的)

这IC有问题如下内容,K6B20电源模块,
1、输出短路测试时发现模块显示屏数字无显示或闪烁跳动故障,共测试9台有4台不良,不良比例:44.4%,                          
2、并机反复开关机额定输入输出满载测试时,发现开机启动中屏幕会有闪跳一下,正常不闪烁,共测试3台有2台不良,不良比例:66.6%