You've just proved yourself an incredible dumb-shit ;-)
You have NO clue what "HCT" actually means. It DOES NOT MEAN that a
+3.3V CMOS input is satisfactory.
There ARE, however, specialty chips made for 3.3V 5V logic translators.
Sheeesh! Another employment candidate for Fry's ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
You're exhibiting the same ignorance of how IC's work as Yuriy K.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
These _little_boys_ just get on my nerves chastising me and saying that HCT would work properly in your application.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Everything everyone has said is valued. It's enabling me to build up a wider picture of what can be done and what the options are. What I do and don't do I won't announce though. :-) I'll go with what is reliable with my own eyes.
The trouble with the net is that since it's so *company* driven, there is only their view since it's so difficult now to Google search for the old fashioned diy and educational stuff. If only we could go back 10-years to when companies laughed at the Internet. Searching was a hell of alot easier before they came along. Usenet has calmed down alot too, we'd be threatening to murder each other with a pickaxe by now. (those were the days).
Your ignorance is very loud and of highest quality, I must admit. Not everybody can achieve that level. Have you ever read datasheet, or any textbook for the EE? "The Art of Electronics" would be a good start.
SN74HCT14
formatting link
VT+ max 2.1V VT- min 0.5V
SN74HCT04
formatting link
VT+ max 2.1V VT- min 0.5V
Other manufacturers have similar characteristics.
Typical 3.3V logic:
SN74HC04
VoutH min 3.2V @ 20uA VoutL max 0.1V @ 20uA
After all these years of design it is finally time to learn the basics. :)
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
You might find breadboarding a lot more pleasant once you get the hang of working with copperclad. It certainly makes working with high frequency a lot easier, and a well-made board can even be used in place of a pcb. I like to use ordinary hot glue to mount components to the copper. This works great for parts that stay cool:)
I'm still using prototypes I made years ago, and they work fine.
Keep it up. Everybody is realizing the "value" of your consultancy ;-)
You read a data sheet without understanding.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Hey f*****ad. I re-designed those parts for ON-Semi.
You are clueless as to good engineering practice.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
If you have something meaningful to say, then go ahead and tell us. Otherwise have the courage to admit that you just made a fool of yourself, my dear analog desiner.
Apply +2.4V Input to an HCTxx running on VDD = +5V and what happens?
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Nothing happens. The 2.4V reads as a clear 1, the threshold is at 1.4V
+/- hysteresis of 100mV, the propagation delay is about 5ns/10ns fall/raise accordingly. The current consumption at 2.4Vin/5Vdd is 1mA which is perfectly within the allowed limits.
Jim , you goofed up and I suggest you to bring your apologies.
Allowing a static (and *undefined* BTW... 1mA if you're lucky) current flow is NOT good engineering practice, and it's NEVER done in well-designed ASIC's.
To see how a 3.3V Logic Level to 5V Logic Level Translator is done properly (in ASIC's designed specifically for that purpose), see...
formatting link
Dimensions are "pre-shrink" BTW, as if you'd know what that means ;-)
I used a similar scheme in my USB interface work for Intel. Unfortunately the patents don't show that part, since it's old art.
Expect my apologies about the time Russia actually becomes a Democracy and Iran becomes Jewish ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Also: Static current for this structure is zero, except for nA's of leakage.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
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