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SN74LVC1G07-Q1: Issue with output voltage level

Part Number: SN74LVC1G07-Q1

Hi TI team,

We are using this buffer as a level shifter for reset signal from 3.3V to 1.8V .We are facing a problem while pulling the input pin to ground, but not getting the output fully low(it's getting low till 1.5V rather than 0V).

PN: SN74LVC1G07-Q1

our current observation is given below;

While A=3.3V,   Y=1.8V

         A=0V,      Y=1.58V

output Y is not getting fully low even after the input A is low(SW9 is pressed).We are expecting 0V as per the datasheet.

Could you please help us to solve this issue.    

Here is the detailed diagram attached

The flash memory at the output side is currently removed for debugging purposes.