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Results tagged with schmitt-trigger
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user 199993
Anything related to Schmitt trigger circuits. Schmitt triggers are positive feedback comparator circuits exhibiting hysteresis.
2
votes
Difference between Schmitt trigger IC and IC with Schmitt trigger inputs
There is no difference. They both are just logic chips with Schmitt trigger inputs.
I don't know which datasheet you mean, but for example this datasheet contains the hysteresis information.
- 172k
0
votes
Initial pluse from schmitt trigger switch debouncer
It depends on if the circuit is sensitive to that first edge or not. For example command 0x00 would not be a command anyway. Or the time for the edge is such that the display ignores it. Obviously you …
- 172k
3
votes
TTL Schmitt trigger vs TTL in relaxation oscillator
The reason is hysteresis.
It keeps the output in a stable state until input voltage crosses the threshold voltage to toggle output state.
It should not work with a standard inverter.
- 172k
2
votes
Accepted
What is the difference between a hex inverting buffer and hex inverting Schmitt trigger?
The dfference is that the standard inverting buffers don't have hysteresis and the Schmitt trigger inverting buffer have hysteresis.
Hysteresis just means you have different levels for low going thres …
- 172k
4
votes
understanding capacitor in a circuit 40106 Schmitt trigger
Q = I×t = C×U.
So it takes longer for the larger capacitance to charge up to same threshold voltage.
Larger capacitance at same voltage holds more charge.
Which is apparent from the RC time constant o …
- 172k
1
vote
Schmitt trigger offset voltage
No it would not be the same if you remove R1 and use a voltage source to drive V+ pin. The V+ threshold voltage would be fixed and there is no way the output feedback resistor can change the threshold …
- 172k
0
votes
Hardware debouncing using 74LS14 - inverter input does not drop below 800 mV
The 10k impedances are just too high for a LS TTL chip input, the chip input will source current out via the series 10k resistor when the pushbutton is pushed.
The values would be fine for a chip with …
- 172k
3
votes
Accepted
Improving waveform shape in discrete Pierce oscillator with Schmitt trigger output
The LVC1G17 buffer output is extremely strong and it means it will have very high slew rate so edges are very fast.
It can drive more than 32 mA and has switching time less than 1ns into 15 pF load at …
- 172k
4
votes
Why is a Schmitt trigger useful for SPI?
... why is a Schmitt trigger helpful for communicating with SPI, since the microprocessor already reads a signal as either HIGH or LOW depending on a threshold value?
That's the mistake in thinking …
- 172k
1
vote
Accepted
What is the appropriate VCC to apply to a Schmitt trigger?
If your MCU and sensor both use 3.3V supply for IO, then that's what you use for the Schmitt trigger buffers too.
Yes, the "A" pins 1 and 3 are inputs, the "Y" pins 6 and 4 are outputs.
Now that wo …
- 172k
0
votes
Schmitt Trigger Level Translation from Encoder
The encoder does not need 5V, it will work with 3.3V levels just fine as it is just a switch basically. The encoder datasheet has an example schematic how to connect it, your implementation does not w …
- 172k
4
votes
Accepted
SPI device stops working when integrating Schmitt triggers and ESD diodes
You have the data pins wrong.
MOSI is output from MCU and should go to data input DI on the sensor.
Also the Schmitt trigger input requires least around 0.7×VCC supply which is around 2.31V (the value …
- 172k