74HC Datasheet, 74HC PDF, 74HC Data sheet, 74HC manual, 74HC pdf, 74HC, datenblatt, Electronics 74HC, alldatasheet, free. 74HC,TC74HCAP, CMOS quad S-R latch by Toshiba,Download Toshiba TC74HCAP datasheet. SN74LSA. (ACTIVE) Quad /S-/R latches. Datasheet ( KB). Description click to collapse contents. The ‘ offers 4 basic S\-R\ flip-flop latches in one.

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74HC Datasheet catalog

Enric Blanco 4, 5 11 Zio Stampella 8 3. Hi, thanks for the reply! The reason why I was datashet at concentrating everything in Hex Latches instead of Quad Latches was to reduce the IC count and, with this, to have a cleaner design of the traces. You can derive a similar deduction for CD Looks like an SR is my daatsheet choice here, but my brain is just a drop of the ocean.

For this reason is important that the circuit is able to record a state change even if brief without any clock or external intervention. Is there a reason why you have to use the fewest ICs? 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.

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On top of that, when I will get into power-optimization for the MCU I may end up having to choose between keeping the interrupts alive or saving power. Path-wise, the design difference wouldn’t look enormous, but would still be an improvement: But you all dqtasheet how it works To conserve bandwidth, I only needed 1 bit in a synchronous “sub-frame” channel to send the analog signal as a digital FM signal of 0 to 1kHz.


If you look at the truth table of CD I want to keep it flexible, both capability and power-usage wise and this requires balance. As has been said, you can make this function from more 74HCT-etc gates.

I would spare the fixed via to the enable having it routed to the MCU and used to control the reset AND the enable itself and would have all the resets linked together in a clean way. The way I plan to implement it the MCU could well stay sleeping all the day, until the measurements are taken and the SR reset. EDIT — to clarify a few points in the design: Can’t yet wrap my head around applying a D or JK that way.

While not the ideal for the approach here simple, cheap and reliable circuit, with only the MCU as “critical complexity”I believe that your comment may deserve an answer by itself for posterity.

No system this complex has shown up on this site. Tony EE rocketscientist You matter to me! While this is not a huge problem to solve and datasehet match my datassheet, the resulting design is not as clear as it would be with a single Reset and the density is lower, requiring me to use more ICs.


Any suggestion on how to implement this otherwise? Sourcing it could be really troublesome. Any way, take into account that the SNN datasbeet been obsolete for 25 years, its not datashert good idea to even consider that part for a new design.

MCU, comms module and voltage regulation sections. Is the enable line capable of effectively “resetting” the latches? You might way to use the common enable in the CD to implement the solution you’re looking for.

Never say you are nobody! Sign up or log in Sign up using Google. OTOH, you might way to use the common enable in the CD to implement the solution you’re looking for.

M74HC279 Datasheet PDF

Sign up using Facebook. Their later comment says the MCU would be sleeping, before you posted your ‘answer’. There’s a good chance that quiescent current added to the system by an extra logic IC would be greater than the current consumed by the MCU waking up and executing a handful of instructions. On processors such as the Atmel AVR that power is in the single microamp region – the clock doesn’t need to be running.