HEF4017BP DATASHEET PDF

HEFBP, Nexperia Counter ICs 5-ST JOHNSON COUNTER datasheet, inventory, & pricing. Jan 4, 5-stage Johnson counter. For a complete data sheet, please also download: HEFBP(N): lead DIL; plastic (SOT). HEFBD(F). HEFBP HEFB; 5-stage Johnson Counter;; Package: SOT (DIP16). For a complete data sheet, please also download. The IC04 LOCMOS.

Author: Kagagore Akinolrajas
Country: Serbia
Language: English (Spanish)
Genre: Art
Published (Last): 7 January 2015
Pages: 209
PDF File Size: 14.53 Mb
ePub File Size: 8.81 Mb
ISBN: 383-2-15874-246-9
Downloads: 74322
Price: Free* [*Free Regsitration Required]
Uploader: Mooguzragore

In those cases, it’s off.

Hef4017bp datasheet pdf

I replaced the circuit and it works fine now, but I tested your idea and with it, I get the described behavior. Yes, it is shown as buffered, but I guess hef4017hp polarity of the LED at Q2 is wrong.

I picked LEDs just to play a little bit with the device and this seems to be the Hello World project for Sign up using Email and Password. Would a Schmitt trigger be needed even then? In the end, Heg4017bp be driving the pin from a microcontroller. Home Questions Tags Users Unanswered.

Russell McMahon k 9 Instead of that happening, Q2 is always on, except when it should be on. Although a only cycles through ten states, there are 32 states in which it might power up if reset is grounded. I’m expecting the counter to go through the LEDs datasneet described in this diagram from the datasheet: It came in stuck to a conductive “sponge” in an antistatic bag and I took the time to touch a grounded object before actually doing anything with it, so it shouldn’t be damaged by ESD.

  HARVEY PEKAR NAME STORY - PDF

HEF4017BP Datasheet

So I’m using the pushbutton to drive the clock, the capacitor is there to help with debouncing and since the actual light level of the LEDs isn’t important for me, I’m using one resistor for all on them. Do all of the other channels behave as expected?

The design of the chip is such that if hwf4017bp in one of the 22 weird states it will progress to a “legitimate” state within 11 clock pulses. The picture shows how current would flow if e. Kris Bahnsen Only Q2 seems problematic.

Not shown on the schematic is the decoupling capacitor, also nF. Sign up or log in Sign fatasheet using Google. A look at the data sheet shows that the one you have is as bad or worse. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. The hef4107bp outputs are behaving normally.

HEFBP datasheet & applicatoin notes – Datasheet Archive

Datsheet actually ddatasheet to use this to drive some transistors, so the current I’m getting right now is more than enough. A microcontroller driven clock will not bounce, so no Scmitt needed. Strange behavior from a Johnson counter Ask Question. Email Required, but never shown. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I’m expecting the counter to go through the LEDs as described in this diagram from the datasheet:.

  MANTO HIDROLIPIDICO PDF

One should not be surprised if a acts strangely on startup, though it should start acting normally within 11 clocks, or if a reset pulse is received. Looks like that could be the result.

It would explain exactly the behavior you describe. By clicking “Post Your Answer”, you acknowledge that you have read our updated hef40017bp of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Sign up using Facebook.

Is Q2 the only one out of place? So am I missing something or is the part damaged? The rest are working as expected. I removed the pin 12 LED and there were no changes to behavior.

It sounds as though your specific IC may be damaged. YMMV but may not. The downside is that, LED drive wise, the Schmitt version can not pull the skin off a rice pudding. My reasonably xtensive experienc with this IC using a switch as a clock source is that the Schmitt version hf4017bp needed.

Author: admin