The CDBC are quad cross-couple 3-STATE CMOS. NOR latches, and the CDBC are quad cross-couple STATE CMOS NAND latches. Each latch. Data sheet acquired from Harris Semiconductor. SCHSC – Revised March The CDB and CDB types are supplied in lead hermetic. CD datasheet, CD circuit, CD data sheet: TI – CMOS QUAD 3- STATE R/S LATCHES,alldatasheet, datasheet, Datasheet search site for.

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You can derive a similar deduction for CD While this is not a huge ddatasheet to solve and still match my requirements, 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. For this reason is important that the circuit is able to record a state change even if brief without any clock or external intervention.

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Any way, take into account that the SNN has been obsolete dztasheet 25 years, its not a good idea to even consider that part for a new design. Path-wise, the design difference wouldn’t look enormous, but would still be an improvement: Never say you are nobody! You matter to me!

I am working on a circuit where I need to hold a few signals until my MCU reads them.

As far as possible I want to keep it digital and without any high dayasheet line anywhere or, better said, well confined in their own “realm”: I would probably need to contemplate it for quite some time to fully grasp it. 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.


But you all know how it works The reason why I was looking 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.

A state change on the inputs would wake the MCU – whereupon it reads the inputs and then goes back to sleep. Email Required, but never shown. Backup question maybe deserving its own question: Is there a reason why you have to use the fewest ICs? I had a sync. As has been said, you can make this function from more 74HCT-etc gates. 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.

I have toyed briefly with the possibility to use the Enable line, but was not sure if it would have cleared the latched states. Can’t yet wrap my head around applying a D or JK that way. You may be looking for this: Zio Stampella 8 3.

CD (INTERSIL) PDF技术资料下载 CD 供应信息 IC Datasheet 数据表 (1/10 页)

Enric Blanco 4, 5 11 I think you need to re-evaluate how much dqtasheet is required by “keeping the interrupts alive”. Thank you all for your help!

I would spare the fixed via to the enable having it routed to the Dtaasheet and used to control the reset AND the enable itself and would have all the resets linked together in a clean way. Sign up using Email and Password. Sign up using Facebook.

CD Datasheet(PDF) – TI store

MCU, comms module and voltage regulation sections. Yeah, looked at the D and JK logic, but that would require providing clock and wouldn’t be an “unattended” design as I plan to implement. Their later comment says the MCU would be sleeping, before you posted your ‘answer’.


I would disagree, but I may be missing the picture here. You might way to use the common enable in the CD to implement the solution dd4044 looking for. Hi, thanks for the reply! I want to keep it flexible, both capability and power-usage wise and this requires balance.

Most MCUs inputs can’t be configured with internal pull-downs, only with pull-ups. SNN simply has all of its reset inputs internally connected.

(PDF) CD4044 Datasheet download

For this to work you need a pull-down resistor on every output. Sourcing it could be really troublesome.

However is practically impossible to find good supply of it and even a datasheet. The shortcoming is that I have 4 separate resets, while ideally I would need only one.

Basically the MCU would read these lines at regular intervals minutes? If you look at the truth table of CD 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.

You will then need pull-ups on every output dstasheet of pull-downs, datasbeet just use the pull-ups of the Datqsheet inputs by configuring it accordingly. Looks like an SR is my only choice here, but my brain is just a drop of the ocean. Is the enable line capable of effectively “resetting” the latches? On processors such as the Atmel AVR that power is in the single microamp region – the clock doesn’t need to be running.