SN74LS540：IS X RAY PCN for SN74LS540DWR ?

Hi Sandy,

I'm not at work today due to the US holiday, however I would expect that this is related to the PCN that can be found here (external site):

•  Qualify New Assembly Material set for Selected Device(s) (PDF)

Are you having some issue with the functionality of the device?

Pls  offer  ALL  PCN    about  SN74LS540DWR    from 2017-2022  years. 

thank  you

After the holiday we will get back with you.