| ??? 11/28/08 14:08 Read: times |
#160367 - Within limits but.. Responding to: ???'s previous message |
0.92 is within limits since the datasheet gives me a TYP of 1 V. But a variation of 80 percent is confusing. But then everything is working as it should.
"Another possible reason for your strange measurement could be, that you forgot, that the output isn't emitting low state all the time, but additionally brief periods of high state. I.e., that your output is emitting a somehow shaped high low pulse train, where the slowly voltmeter can only take the average, which then must be much higher than a plain VOL only, of course" Couldn't understand that part, and it is very interesting. Why isn't it emitting low state all the time? Please explain... |
| Topic | Author | Date |
| ouput voltage when pin is pulled low | 01/01/70 00:00 | |
| Check the datasheet | 01/01/70 00:00 | |
| Different VOLs? | 01/01/70 00:00 | |
| Why not? | 01/01/70 00:00 | |
| Always variances | 01/01/70 00:00 | |
| Shouldn't be that different! | 01/01/70 00:00 | |
| the thing in the datasheet everybody misses | 01/01/70 00:00 | |
| Within limits but.. | 01/01/70 00:00 | |
| AT 25 mA!!! | 01/01/70 00:00 | |
| Average | 01/01/70 00:00 | |
| Not modulating the pin! | 01/01/70 00:00 | |
| ...any low is a fine low! | 01/01/70 00:00 | |
| 'some' may not be a problem .... | 01/01/70 00:00 | |
| Of course, but... | 01/01/70 00:00 | |
| No, it is not fine! | 01/01/70 00:00 | |
no, it is not | 01/01/70 00:00 |