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: Zur Kabar
Country: Tajikistan
Language: English (Spanish)
Genre: Photos
Published (Last): 12 September 2018
Pages: 364
PDF File Size: 7.32 Mb
ePub File Size: 8.32 Mb
ISBN: 721-3-46826-773-3
Downloads: 40743
Price: Free* [*Free Regsitration Required]
Uploader: Temi

I removed the pin 12 LED and there were no changes to behavior.

It would explain exactly the behavior you describe. I picked LEDs just to play a little bit with the device and this seems to be the Hello World project for I’m actually planning to use this to drive some transistors, so the current I’m getting right now is more than enough.

Looks like that could be the result. The rest are working as expected. Sign up using Email and Password.

Hefbp datasheet pdf

Sign up using Facebook. In those cases, it’s off. 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. I guess the polarity of the LED at Q2 is wrong.

  EL CARTEL JESUS BLANCORNELAS DESCARGAR PDF

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.

HEF4017BP Datasheet

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. Russell McMahon k 9 Sign up or log in Sign up using Google. I’m expecting the counter to go through the LEDs as described in this diagram from the datasheet: Is Q2 the only one out of place?

The other outputs are behaving normally. YMMV but may hef40017bp. In the end, Adtasheet be driving the pin from hwf4017bp microcontroller. Would a Schmitt trigger be needed even then? Yes, it is shown as buffered, but Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy datasueet cookie policyand that your continued use of the website is subject to these policies.

I replaced the circuit and it works fine now, but I tested your idea and with it, I get the described behavior. Kris Bahnsen Only Q2 seems problematic.

  KAOSSILATOR PRO MANUAL PDF

HEFBP Datasheet(PDF) – NXP Semiconductors

Home Questions Tags Users Unanswered. The design of the chip is such that if it’s in one of the 22 weird states it will progress to a “legitimate” state within 11 clock pulses.

It sounds as though your specific IC may be damaged. Not shown on the schematic is the decoupling capacitor, also nF. The downside is that, LED drive wise, the Schmitt version can not pull the skin off a rice pudding.

Strange behavior from a Johnson counter Ask Question. It came in stuck to a conductive “sponge” in an antistatic bag and I took the time hef40017bp touch a grounded object before actually doing anything with it, so it shouldn’t be damaged by ESD. Do all of the other channels behave as expected?

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The picture shows how current would flow if e. Post as a guest Name.

So am I missing something or is the part damaged?

VPN