ok! i need to back up just for a moment. i have maybe 30 hours invested in researching using transistors as switches since my last post. i have garnered quite a bit of positive information. HOWEVER, in watching youtube videos and carefully listening and practicing the authors implementation. i found they all don't seem to agree with one another. "or" they get to a point and say something completely opposite of what they had just been trying to demonstrate. i won't bore you with details.
i have looked through arduino, sparkfun and other source for information on "data sheets". i understand how helpful they can be when available. but it is the way it is explained that is...............uhm............they pick a product and tell you about stuff that doesn't pertain to what you are working on, though there is a lot of information. so if anyone has a few minutes i would like to get a more concise understanding of how to interpret a "data sheet" and i hope to be able to be "specific". knowledge of these parameters could be priceless in my estimation.
i would like to start with INPUT. specifically these items:
i have a date sheet. it tells me this:
input LOW voltage- sym Vil (0.8v) max
input HIGH voltage-sim Vih (2.0) min
output LOW voltage
output HIGH voltage
Vcc current (operating)
Vcc Current (standby)
input LEAKAGE current
input current HIGH
input current HIGH (not a typo)
output load Impedance
preamp input resistance
MIC sp +/- gAIN.
That's a lot and I don't expect anyone to have time for all of it. so would anyone like to take the first (2)?
OR.....point me to a page that can explain it since you have already been there. thanks
i have looked through arduino, sparkfun and other source for information on "data sheets". i understand how helpful they can be when available. but it is the way it is explained that is...............uhm............they pick a product and tell you about stuff that doesn't pertain to what you are working on, though there is a lot of information. so if anyone has a few minutes i would like to get a more concise understanding of how to interpret a "data sheet" and i hope to be able to be "specific". knowledge of these parameters could be priceless in my estimation.
i would like to start with INPUT. specifically these items:
i have a date sheet. it tells me this:
input LOW voltage- sym Vil (0.8v) max
input HIGH voltage-sim Vih (2.0) min
output LOW voltage
output HIGH voltage
Vcc current (operating)
Vcc Current (standby)
input LEAKAGE current
input current HIGH
input current HIGH (not a typo)
output load Impedance
preamp input resistance
MIC sp +/- gAIN.
That's a lot and I don't expect anyone to have time for all of it. so would anyone like to take the first (2)?
OR.....point me to a page that can explain it since you have already been there. thanks