??? 10/03/06 20:37 Read: times |
#125754 - it's also the switching transient ... Responding to: ???'s previous message |
There's also that ugly instant during which Vcc and Vss are connected through the totem pole. It's a brief interval, but that's when the thing pulls down on Vcc an up on Vss. The result is "ground bounce."
I don't know where this dolt gets his misinformation, but as they've not built NMOS parts since the early '90's, and since CMOS is presently the fast commercial quality logic of the age, there's no point in comparing with bipolar hardware. As the Fairchild guys have already pointed out that the majority of bipolar logic, certainly the LSTTL, STLL, and 10KECL are slower than the fastest CMOS of the current era, yet use upward of 6-7 orders of magnitude (that's powers of ten, for those who smoke weed) more power in a static condition, nobody wants to consider bipolar logic either. Yes, the old NMOS and even PMOS devices still do what they always did, and you CAN, if you wish, use 'em, even today, though it's not recommended, but you do so at your own peril. RE |