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Hello,
Can we use SN74LV4051A with the following power supply sequence?
3V to analog input --> 4ms --> 5V to Vcc
Is it possible to use since the absolute maximum rating of VI is -0.5 V to 7 V?
Best Regards,
Ryuji Asaka
Ryuji,
You may not place 3V on the SN74LV5041A I/O pins (Y0-Y7) without a supply voltage present. You can see this in the abs max table below. If you have the I/O path voltage above the supply voltage pin VCC the device protection diodes will begin to conduct.
The Vi spec you reference in your post is talking about the logic select pins (A,B,C) that do not have protection diodes on those pins.
If you are looking for a signal switch that you can have a voltage on the I/O signal path and Vcc = 0V you need to look for devices with a feature we call Ioff or powered off protection. This feature places the I/O path in Hi-Z state when Vcc = 0V.
Thank you,
Adam
Thank you,
Adam
Ryuji,
Sure I would be happy to help you search for the correct product. What are you trying to do in your system with the signal switch so I can help you find the correct product? Do you know that bandwidth of your signals? How many signals do you want to switch?
Here is an example of searching for devices with the Ioff protection feature on TI.com signal switch selection tool.
Adam
