Electronic – Modern 3.3V CMOS Logic gates

cmosdigital-logic

I wonder what series of 3.3V CMOS logic gates are the standard in the year 2015.

Decades ago, when I learned about digital logic the 7400 TTL series was just going out of favor for the CD4000 series.

I haven't used any bare CMOS logic gates and flip-flops since then except for toy stuff. Now I'm working on a design where I need some digital logic. The prototype is running using a CPLD, but that seems to be a bit overkill. The design is so small that I can fit it inside three or four logic chips.

Timing and current consumption aren't critical at all. Low price and high availability are more important.

So what kind of digital logic family is the industry using these days?

Best Answer

HCMOS (74HC) is still very popular these days due to its wide voltage range and the fact that it still has through-hole packages, but LVC (74LVC) is useful for its lower bottom supply limit, 5V tolerance regardless of supply, partial power-down capability, reduced footprint packages, and reduced gate count devices (e.g. 74LVC2G00).