Other Parts Discussed in Thread: SN7400 , SN74LS00 FAQ: Logic and Voltage Translation > Logic Technology >> Current FAQ
The High-speed CMOS (HC) logic family was created as a direct replacement for older bipolar junction transistor based transistor…
The TXB device will operate with 5V inputs, however it depends on what you mean by TTL (some people use the term to just mean 5V, while others mean the actual SN7400 TTL logic families).
The old 5V logic families have output voltages that can be as…
Hi Emrys,
Thank you very much your detailed explanation and solving my query.
It is interesting to know that you still support SN7400!! Great Company! Great Values!!
Thank you very much!
Regards,
Aravind D. Chakravarti
Hi Cris,
I can try to help out with the logic side -- for the LDO, I'd recommend posting to the LDO forum.
I'm curious why you went with the LS family of logic over a more modern family like ABT? The old SN7400, S, and LS families are notoriously…
Hi Christie,
The following is TI's policy on obsolescence:
www.ti.com/.../product-change-notification.html
The policy basically boils down to this: TI will continue to sell a device as long as we have a customer buying it, unless something happens…
Hello Andy,
The E4/G4 question is extremely common and even has its own post explaining it, located here: e2e.ti.com/.../720395
As for the SN prefix, that is an arbitrary prefix added to TI logic devices to differentiate them from our competitors…
Hi Enzo,
I am not magic, and I have no way to foretell the future for you... if you ask me if I will be alive in 10 years (or even tomorrow), I cannot say for certain.
I can, however, tell you TI's policy on obsolescence and give you my opinion. …
Hi Kirsten and welcome to the forums!
Typically these days the best solution is to use a microcontroller -- there are a lot of low cost, low power options out there that are basically infinitely customizable. I recently did a similar build with an MSP430FR2311…
Part Number: SN7402
The input(s) is(are) sinking substantial current (milliamperes) when a logical high (+5 VDC / Vcc in this case) is applied to the input. My understanding from decades of practice, and from the specification sheet, is that TTL inputs…
Part Number: SN74AVC4T245 Other Parts Discussed in Thread: SN74S04 , SN7404 Tool/software: Hi,
I saw a statement on the document SDYA009C (Designing With Logic, a TI's document)：
" the inputs of these devices must be connected to the supply voltage…
