New answers tagged buffer
3
votes
What is the difference between a tristate buffer and a transmission gate?
The tristate driver you present contains a transmission gate (you can count the top inverter too as part of it).
Without the buffer (formed by the two inverters) it will transmit signals in either ...
- 384k
3
votes
What is the difference between a tristate buffer and a transmission gate?
The transmission gate is not a logic element, and it is not directional. It's a switch that, when enabled. connects two circuit nodes together, forcing them to (nearly) the same voltage. That voltage ...
- 2,605
1
vote
Are these switches really necessary?
We're missing some context here since you've only showed us one page of the schematic. I would like to see where REF and IN_X- ...
- 111
0
votes
Accepted
Is 74244 buffer suitable for multiplying data and enable in my Rasberry Pi3 to ATmega128A bidirectional communication?
I don't see any advantage to an individual driver for each "data MAX485".
Instead, let the ATMega drive two drivers for data, each driving 10 differential drivers,
and two more drivers for ...
- 1,554
1
vote
Is 74244 buffer suitable for multiplying data and enable in my Rasberry Pi3 to ATmega128A bidirectional communication?
1. Using 74244 buffer is suitable for multiplying Raspberry data steam and enable signal 20 times for 20 groups of bus as in the diagram.
Probably not. I'll be surprised if a RPi3 pin can drive that ...
- 171k
2
votes
Voltage Buffer Vs Impedance matching
A couple of things
Using TL072 as a voltage buffer doesn't offer any benefits if the preceding stage also is TL072. Load driving capacity stays the same.
You do not need impedance matching to avoid ...
- 62
2
votes
Voltage Buffer Vs Impedance matching
Yes, there is impedance mismatch.
What you don't realize that it is what you want.
Ideal op-amps have zero output impedance and infinite input impedance. Those are good things.
Imagine if you did ...
- 138k
2
votes
LM358 Output Voltage Issue / Compensation
The circuit is way too complicated for what you're trying to do.
A slight refactoring eliminates the rail-to-rail problem altogether.
First of all, a single opamp can do the conversion you're looking ...
- 171k
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