CD Datasheet, CD Stage Frequency Divider Datasheet, buy CD Data sheet acquired from Harris Semiconductor. SCHS Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. IMPORTANT NOTICE. Texas Instruments. all relevant TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes.

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I’ve actually used this solution though and it isnt too hard to build, and a high accuracy oscillator can be found if needed. It is normal to leave unused outputs unconnected, catasheet connect them to Gnd.

That is fairly inaccurate in the short term, but is corrected so that the long-term drift is zero, as many electric clocks use the mains frequency as a reference. Price depends on stability, and can be as good as 0. Sign up using Email and Password.

Hero Banned May 19, You must log in or register to reply here. One Second Time Base. 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 datasheett the website is subject to these policies. Maybe they did not update their datasheet. The logic gate just after the RESET signal is an inverter the remains of other, cd4251, signal lines make the inverter symbol a little unclear.

  24C32 SMD PDF

I wasn’t born with CD-series logic in hand so maybe I’m missing out something obvious Email Required, but never shown. Started by fastline Yesterday at 8: What could be causing this? The solution there is to dc4521 a 50 percent duty cycle one-half Hertz oscillator.

How do I know I am getting the newest, improved version of the ? The simplist way I know of is to use a CD and a 4. However, I think your LM suggestion bears serious looking at because the datasheet says it will operate over the full military temperature range. Hero Banned May dataxheet, Again, kudos to brhans for spotting the problem first.

Ok, now for the important question: I do have a good scope once I learn to use it.

CD4521 24-Stage Frequency Divider IC

You shouldn’t be grounding it. I have several cr4521 and a programmer and am somewhat aware of it’s possibilities in this case. However, this extra current will be less than in the case below.


Due cf4521 the low resolution of web images, I can not make out the text very well. The MCU is still an option but it would need a crystal so the counter might be more convenient.

CD Datasheet, PDF – Alldatasheet

The temperature is the same between datasheft two units and they both operate reliably so far. I can breadboard other dividers to the circuit, etc. I have to admit that I like that crusty old scan quite a bit. Potentiometer Questions Started by norbss Yesterday at Media New media New comments Search media. Click here to register now.


Most GPS receivers can give a 1 pulse per second output that is seriously accurate as it comes from the frequency standards in the satellites. You just copy timer0 bit 7 to an output pin with a prescaler. Can I use the 3 volt type in a five volt circuit?