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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This is the scenario: The waveforms are perfect. I then read SDO to see if a conversion is ready. Essentials Only Full Version.

QT HC Datasheet.

ddatasheet MCP – Odd results? This is a best guess: I don’t know why this should be. But I’ve read it and read it and I cannot see anything that would tell me. I get odd results.

dztasheet Changing the address pins with the enables strapped active is likely to cause glitches. I cannot see anywhere where I have broken any rules. M Super Member Total Posts: And so seems to be the case. It does seem to require a 1ms start pulse. Could a tiny bit of ringing on the line upset the device? Please bear in mind that I have been tinkering with the code for several days and have tried many variations.

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What language is your source in? Haven’t received registration validation E-mail? Until I crack datasheer, I’m stymied. That should be glitch free and will do for testing. Maybe it’s a footnote in the datasheet.

HC138 Datasheet

Therefore, it needs to be. Debug datasjeet automatically disabled 16F88 cannot set internal oscillator frequency beyond This is really proving problematic. Thanks for your help. Thanks again for your help! By coincidence, I am transitioning with one bit change only. CS is driven through a HC decoder.

I take your point about the but there is one bit of exculpatory evidence: If it is, I clock the result out. It must be in the datasheet. The transitions from Y0 being active to Yn being active so any glitches ought dxtasheet appear on the other outputs. The tcsl on the datasheet is 50ns so does that mean any glitch shorter than 50ns won’t have any effect?

Also, I see in one app note schematic, a 1K resistor in each digital line. 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 dagasheet conversion or initiates a new conversion.

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MCP3551 – Odd results?

It’s bound to be some devilish little detail confounding me. Why does my PIC32 run slower than expected? Forums Posts Latest Posts.