description/ordering information. These octal buffers and line drivers are designed to have the performance of the popular ‘HC series devices and to offer a. DATA SHEET. Product specification. File under Integrated Circuits, IC December INTEGRATED CIRCUITS. 74HC/HCT Octal buffer/line driver; 74HCTD datasheet, 74HCTD circuit, 74HCTD data sheet: PHILIPS – Octal buffer/line driver; 3-state,alldatasheet, datasheet, Datasheet search site.

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By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. A beginner style question. I’m attempting to perform some logic level conversions on 3.

What should I be looking for in terms of the datasheets when determining these things in my case I don’t really aim to source or sink current to other devices. I just aim to do the voltage conversion. Is it only leakage current that would be output in this instance?

74HCT Datasheet

PS I’m aware of that the maximum current into these devices Icc is about 50ma and a max output of a particular pin Io is around ma. Links for you reference: Whether that is sufficiently below 3. That would be 4. This had a finite guaranteed logic high threshold sufficiently below 3. So if you need a logic gate in there anyway, make it a HC T type and you get the 3.


This Microchip document shows some interesting ways to interface between 3. In the datasheets you have to look for minimum high level input and maximum low level input. The former is of 0. Worst case you don’t even meet the 0. For input high a minimum of 3. Linearly extrapolating to 5 V that becomes 3. Low level input should be less than 1. First off the noise immunity is imbalanced so that potential risk from ingress noise is imbalanced.

CSC Circuits and Systems Datasheets

The chip is a down-voltage converter hex buffer. So unless you are trying to do a closed-loop or loopback test?

The datasheef translator ir related to the output Vcc by having a threshold slightly more than Vcc so that a translator range of 2: The risk depends level of noise from ingress for long lines or, cross-talk, conducted noise or overshoot. By clicking “Post Your Answer”, datasueet 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.

Home Questions Tags Users Unanswered. Peter H 1 3 Olin Lathrop k 30 I can never remember. It doesn’t help that another local EE I know has the last name “Schmidt”. I remember because it’s the only Schmitt I know.

I don’t even know if it’s a common name in neighboring Germany. Luckily they used some variations on Ellis Island, or half of America would have been called Smith.

It is pronounced more like “shmeet” would be in english, but means exactly the same as “smith”, which refers to the profession today called “blacksmith”.


Before the industrial revolution, there were a lot of those around in Europe and elsewhere. No, I know that “Schmidt” must be one of the most occurring names, I meant “Schmitt”. datasheer

Thanks for your reference document. I guess my question is without resistors connected how would one know whether it’s safe to connect the outputs of the 74HCD to the inputs of the 74HC as this chip can do the logic conversion?

I may be misreading the datasheet, but I think you are: But its output is a 3. Good beginner questions; 3. Is it OK to directly connect Tony EE rocketscientist 62k 2 21 Could you elaborate on this please Tony ” The chip is a down-voltage converter and cannot be used at all for up converting. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

74HCT541 DIP

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