CD4051B DATASHEET PDF

June 15, 2020 0 Comments

Data sheet acquired from Harris Semiconductor. SCHSD. CAUTION: The CDB, CDB, and CDB analog multiplexers are digitally-controlled . Product data sheet. Rev. 12 — 25 March 4 of Nexperia. HEFB. 8- channel analog multiplexer/demultiplexer. Fig 5. Logic diagram. An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in . Product Folder Links: CDB CDB CDB.

Author: Gorn Tauktilar
Country: Zimbabwe
Language: English (Spanish)
Genre: Relationship
Published (Last): 6 April 2017
Pages: 137
PDF File Size: 14.53 Mb
ePub File Size: 7.54 Mb
ISBN: 697-3-62930-346-9
Downloads: 78784
Price: Free* [*Free Regsitration Required]
Uploader: Faegami

(PDF) CD4051B Datasheet download

I’ve connected the input to 5V for testing stability of the reading. Still, I was hoping for a method that wouldn’t tamper with the input signal in any way: I’ve experimented with various delay times, and 30ms seemed to improve things a lot when reading sequantially 0, 1, 2, I’d try using a different board.

Also the pulldown resistor need not be that high. The is an analog multiplexer – it can switch analog signals between Vee 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. But this happens even with 1k resistor on Input 4. That is what seems to be the source of your problems. Wouldn’t the digital pins be able to sink fast enough that the IC would mux correctly?

If I start reading random ports between 0 and 7it reads correctly for about 10 seconds, then suddenly starts reading zero. Is there a better alternative? From the Arduino wiki page, it reads “Futhermore, the is able to work with analog values; in the case of the Arduino, you are able to use the analog inputs with a voltage between V and route them to an Analog-In Pin on your Arduino.

  1001 ZILE CARE AU SCHIMBAT LUMEA PDF

CDB Datasheet(PDF) – TI store

Sign up using Facebook. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I’ve programmed a small routine that checks for consistency of the signal reading. I haven’t seen the block diagram for the chip but it seems that you may be shorting something internally inside the chip which is why the input drops to 0V after a short time. Datasheet simulate this circuit — Schematic created using CircuitLab I’ve connected the input to 5V for testing stability of the reading.

Look at page 4 of this guide.

But the documentation on their website is generally incredibly poor, so I wouldn’t be surprised. Problematic breadboards cause loose connections within the board which you cannot see and hence lead to situations such as open connections etc.

It still goes to zero. Your drawing does not correspond with the nomenclature of the chip. However, the control inputs require CMOS digital levels. I’ve tried removing the pull-down resistor. 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. Sign up using Email and Password. What is the signal source that you’re reading?

I’ve tried changing the pull-down resistor. But it changes nothing. This means that this chip will not work with 3. The IC has internal protection circuits. Email Required, but never shown.

Home Questions Tags Users Unanswered. You show that you’ve got your “Signal” leads connected to the dayasheet inputs. Post as a guest Name.

  EJA110A MANUAL PDF

Datasheets search archive of electronic components datasheets

I did try to add a 10k resistor in series with the input, but it changed the output. Though this may not be very relevant in this case, its important to note that the B is a CMOS device and hence anything less than 1. Ideally something that would allow multiplexing without distorting the signal. At the very least, connect a pullup resistor of about 10K between IN and the 5V power source. I’m using a breadboard of questionable quality. I’m a bit lost to what the problem could be.

But perhaps I can calibrate it. Sign up or log in Sign up using Google. LawrenceNK1G, I’m going to read a lot of things, like pots, voltage dividers etc.

A 10K resistor works well in most cases. So – tell more about what is connected on the analog mux pins? I’m using digitalWrite on three pins to select the input port, and then waiting delay for 30ms before doing an analogRead on A0. I’ve also tried adding a 1uF capacitor. I imagine it could be something with capacitance on the ports, but I have the impression that the multiplexer is actually supposed to support very fast switching? If I read only port 4 for 30 seconds, it starts to datasheef correctly and stable.

I’m trying to multiplex an analog input port on an Arduino Uno. Is it possible that they are getting triggered? The Arduino has about 10Mohm resistance on the input side, so it shouldn’t make a difference, but the max reading was about instead of