Other Parts Discussed in Thread: ADS7042, CD74HC4051
Hello,
I was looking at the datasheet for the SN74CBTLV3251, and it is not clear whether a signal of 1.8V will be high enough to be considered a HIGH.
My customer wants to feed 8 different analog signals into this device from 8 opamps with a max value of 1.95V.
They can have a 3V supply if needed (since we do not have any sub 2V 8:1 switches) for this device, but the logic signals will be at most 1.8V from a FPGA.
This will feed into an ADC, most likely the ADS7042, but they only need it to have a speed of 100ksps.
My questions are:
Will this switch be able to turn on properly with control logic of 1.8VIH with a VCC of 3V?
If this device will not work, could I suggest the CD74HC4051?
Thank you,
Louie