HC138 DATASHEET PDF

HC138 DATASHEET PDF

Product data sheet. 1 General description. The 74HC; 74HCT decodes three binary weighted address inputs. (A0, A1 and A2) to eight. HC datasheet, HC pdf, HC data sheet, datasheet, data sheet, pdf, QT Optoelectronics, HIGH SPEED TRANSISTOR OPTOCOUPLERS. HC 1-of-8 Decoder/demultiplexer. The SL74HC is identical in pinout to the LS/ALS The device inputs are compatible with standard CMOS outputs;.

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Forum Themes Elegant Mobile. It does seem to require a 1ms start pulse. Any help datsheet received. If not, I set CS high and do other stuff until the next time, assuming that polling CS either does nothing if in the middle of a conversion or initiates a new conversion. The tcsl on the datasheet is 50ns so does that mean any glitch shorter than 50ns won’t have any effect? Could a tiny bit of ringing on the line upset the device?

But I’ve read it and read it and I cannot see anything that would tell me. By coincidence, I am transitioning with one bit change only. CS is driven through a HC decoder. Is this a clue? I have dataeheet some progress. Essentials Only Full Version. And so seems to be the case.

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MCP3551 – Odd results?

MCP – Odd results? Also, I see in one app note schematic, a 1K resistor in each digital line. I’m now back to the first code but with a small adjustment. Changing the address pins with the enables strapped active is likely satasheet cause glitches. Thanks for your help. This is a best guess: If it is, I clock the result out.

SLS HC Series Datasheets. SL74HC, HC Datasheet.

The transitions from Y0 being active to Yn being active so any glitches ought to appear on the other outputs. I get odd results. I don’t know why this should be.

I’m going wrong somewhere but there has to be a limit to how many times I can read the datasheet datasbeet mental atrophy sets in! That should be glitch free and will do for testing. Moreover, even if there is a splurge on the falling edge, it shouldn’t have any further effect Please bear in mind that I have been datahseet with the code for several days and have tried many variations. It seems unlikely but it would explain the random nature of the results.

This is the scenario: M Super Member Total Posts: User Control Panel Log out. It’s bound to be some devilish little detail confounding me. I cannot see anywhere where I have broken any rules. Debug breakpoints automatically disabled 16F88 cannot set internal oscillator frequency beyond Until I crack this, I’m stymied. Maybe it’s a footnote in the datasheet. Microchip are usually pretty thorough.

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This is really proving problematic. Therefore, it needs to be. So try transitioning between Yn and Ym where n and m only have one address bit different.

HC138 Datasheet

Forums Posts Latest Posts. What language is your source in? I’m off glitch hunting. Why does my PIC32 run slower than expected? Thanks again for your help! Meanwhile, thanks for your suggestion.

Hey – that’s an interesting thought. I then read SDO to see if a conversion is ready. However, I notice in trawling for source code, that an example from Microchip applies a 1ms low-going pulse to the CS. I take your point about the but there is one bit of exculpatory evidence: Haven’t received registration validation E-mail? It must be in the datasheet. Sometimes a conversation with someone knowledgeable just frees up the brain a bit!

The waveforms are perfect.