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What does the triangle look like in this diagram?

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3

$begingroup$

Using my intuition, I would assume the triangle in this simple circuit to be an inverter, but does that look correct?
What is this symbol?

digital-logic identification schematics diagram

share|improve this question

edited Sep 25 at 20:21

Voltage Spike

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$endgroup$

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  13
  

  
  
  
  
  
  

  
  $begingroup$
  It looks like a triangle to answer your title... But you probably mean what it represents.I would say it is a Schmitt trigger inverter.
  $endgroup$
  – Eugene Sh.
  Sep 25 at 16:36
  
  

  
  
  
  

add a comment
 | 

3

$begingroup$

Using my intuition, I would assume the triangle in this simple circuit to be an inverter, but does that look correct?
What is this symbol?

digital-logic identification schematics diagram

share|improve this question

edited Sep 25 at 20:21

Voltage Spike

43.8k1212 gold badges4545 silver badges125125 bronze badges

asked Sep 25 at 16:34

ClockwerkSCClockwerkSC

5922 bronze badges

$endgroup$

• 
  
  
  

  
  13
  

  
  
  
  
  
  

  
  $begingroup$
  It looks like a triangle to answer your title... But you probably mean what it represents.I would say it is a Schmitt trigger inverter.
  $endgroup$
  – Eugene Sh.
  Sep 25 at 16:36
  
  

  
  
  
  

add a comment
 | 

$begingroup$

Using my intuition, I would assume the triangle in this simple circuit to be an inverter, but does that look correct?
What is this symbol?

digital-logic identification schematics diagram

share|improve this question

edited Sep 25 at 20:21

Voltage Spike

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asked Sep 25 at 16:34

ClockwerkSCClockwerkSC

5922 bronze badges

$endgroup$

share|improve this question

edited Sep 25 at 20:21

Voltage Spike

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asked Sep 25 at 16:34

ClockwerkSCClockwerkSC

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share|improve this question

edited Sep 25 at 20:21

Voltage Spike

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asked Sep 25 at 16:34

ClockwerkSCClockwerkSC

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edited Sep 25 at 20:21

Voltage Spike

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edited Sep 25 at 20:21

Voltage Spike

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asked Sep 25 at 16:34

ClockwerkSCClockwerkSC

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asked Sep 25 at 16:34

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2 Answers
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5

$begingroup$

It looks like a schmitt trigger inverter like this one (but not this specific one as the pins are different). There should be a Vcc and gnd for this part somewhere else in the schematic.

Source: https://www.jameco.com/Jameco/Products/ProdDS/46640.pdf

share|improve this answer

answered Sep 25 at 16:47

Voltage SpikeVoltage Spike

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add a comment
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4

$begingroup$

It's either a Schmitt-trigger inverter or a Schmitt-trigger buffer. It's unclear to me whether the output has a circle or an arrow on it. The hysteresis diagram implies it's an inverter, but that could be wrong.

Edit: as @duskwuff points out, from a functional point of view, it's undoubtedly an inverter. The pin numbers match the SN74LVC1G14 single gate ST inverter, and other similar single gate parts.

Schmitt-trigger gates have input hysteresis which can help in cleaning up slow or somewhat noisy waveforms. In this particular case it does not seem to be doing much in that regard, but it will not do much harm (it will tend to have the RAM outputs fighting each other for a slightly longer during switch transitions than a regular 74LS04 inverter, probably not a big deal).

share|improve this answer

edited Sep 25 at 22:42

answered Sep 25 at 18:35

Spehro PefhanySpehro Pefhany

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$endgroup$

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  3
  

  
  
  
  
  
  

  
  $begingroup$
  The presence of the buffer on one RAM enable pin, but not the other, makes me think it's an inverter. It'd be bizarre to use a non-inverting buffer there.
  $endgroup$
  – duskwuff
  Sep 25 at 19:11
  

  
  
  
  

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5

$begingroup$

It looks like a schmitt trigger inverter like this one (but not this specific one as the pins are different). There should be a Vcc and gnd for this part somewhere else in the schematic.

Source: https://www.jameco.com/Jameco/Products/ProdDS/46640.pdf

share|improve this answer

answered Sep 25 at 16:47

Voltage SpikeVoltage Spike

43.8k1212 gold badges4545 silver badges125125 bronze badges

$endgroup$

add a comment
 | 

5

$begingroup$

It looks like a schmitt trigger inverter like this one (but not this specific one as the pins are different). There should be a Vcc and gnd for this part somewhere else in the schematic.

Source: https://www.jameco.com/Jameco/Products/ProdDS/46640.pdf

share|improve this answer

answered Sep 25 at 16:47

Voltage SpikeVoltage Spike

43.8k1212 gold badges4545 silver badges125125 bronze badges

$endgroup$

add a comment
 | 

$begingroup$

It looks like a schmitt trigger inverter like this one (but not this specific one as the pins are different). There should be a Vcc and gnd for this part somewhere else in the schematic.

Source: https://www.jameco.com/Jameco/Products/ProdDS/46640.pdf

share|improve this answer

answered Sep 25 at 16:47

Voltage SpikeVoltage Spike

43.8k1212 gold badges4545 silver badges125125 bronze badges

$endgroup$

share|improve this answer

answered Sep 25 at 16:47

Voltage SpikeVoltage Spike

43.8k1212 gold badges4545 silver badges125125 bronze badges

answered Sep 25 at 16:47

Voltage SpikeVoltage Spike

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answered Sep 25 at 16:47

Voltage SpikeVoltage Spike

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4

$begingroup$

It's either a Schmitt-trigger inverter or a Schmitt-trigger buffer. It's unclear to me whether the output has a circle or an arrow on it. The hysteresis diagram implies it's an inverter, but that could be wrong.

Edit: as @duskwuff points out, from a functional point of view, it's undoubtedly an inverter. The pin numbers match the SN74LVC1G14 single gate ST inverter, and other similar single gate parts.

Schmitt-trigger gates have input hysteresis which can help in cleaning up slow or somewhat noisy waveforms. In this particular case it does not seem to be doing much in that regard, but it will not do much harm (it will tend to have the RAM outputs fighting each other for a slightly longer during switch transitions than a regular 74LS04 inverter, probably not a big deal).

share|improve this answer

edited Sep 25 at 22:42

answered Sep 25 at 18:35

Spehro PefhanySpehro Pefhany

229k66 gold badges183183 silver badges481481 bronze badges

$endgroup$

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  $begingroup$
  The presence of the buffer on one RAM enable pin, but not the other, makes me think it's an inverter. It'd be bizarre to use a non-inverting buffer there.
  $endgroup$
  – duskwuff
  Sep 25 at 19:11
  

  
  
  
  

add a comment
 | 

4

$begingroup$

It's either a Schmitt-trigger inverter or a Schmitt-trigger buffer. It's unclear to me whether the output has a circle or an arrow on it. The hysteresis diagram implies it's an inverter, but that could be wrong.

Edit: as @duskwuff points out, from a functional point of view, it's undoubtedly an inverter. The pin numbers match the SN74LVC1G14 single gate ST inverter, and other similar single gate parts.

Schmitt-trigger gates have input hysteresis which can help in cleaning up slow or somewhat noisy waveforms. In this particular case it does not seem to be doing much in that regard, but it will not do much harm (it will tend to have the RAM outputs fighting each other for a slightly longer during switch transitions than a regular 74LS04 inverter, probably not a big deal).

share|improve this answer

edited Sep 25 at 22:42

answered Sep 25 at 18:35

Spehro PefhanySpehro Pefhany

229k66 gold badges183183 silver badges481481 bronze badges

$endgroup$

• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  $begingroup$
  The presence of the buffer on one RAM enable pin, but not the other, makes me think it's an inverter. It'd be bizarre to use a non-inverting buffer there.
  $endgroup$
  – duskwuff
  Sep 25 at 19:11
  

  
  
  
  

add a comment
 | 

$begingroup$

It's either a Schmitt-trigger inverter or a Schmitt-trigger buffer. It's unclear to me whether the output has a circle or an arrow on it. The hysteresis diagram implies it's an inverter, but that could be wrong.

Edit: as @duskwuff points out, from a functional point of view, it's undoubtedly an inverter. The pin numbers match the SN74LVC1G14 single gate ST inverter, and other similar single gate parts.

Schmitt-trigger gates have input hysteresis which can help in cleaning up slow or somewhat noisy waveforms. In this particular case it does not seem to be doing much in that regard, but it will not do much harm (it will tend to have the RAM outputs fighting each other for a slightly longer during switch transitions than a regular 74LS04 inverter, probably not a big deal).

share|improve this answer

edited Sep 25 at 22:42

answered Sep 25 at 18:35

Spehro PefhanySpehro Pefhany

229k66 gold badges183183 silver badges481481 bronze badges

$endgroup$

share|improve this answer

edited Sep 25 at 22:42

answered Sep 25 at 18:35

Spehro PefhanySpehro Pefhany

229k66 gold badges183183 silver badges481481 bronze badges

answered Sep 25 at 18:35

Spehro PefhanySpehro Pefhany

229k66 gold badges183183 silver badges481481 bronze badges

answered Sep 25 at 18:35

Spehro PefhanySpehro Pefhany

229k66 gold badges183183 silver badges481481 bronze badges