| ??? 11/18/09 15:13 Read: times |
#170937 - Important that you use HCT and not HC Responding to: ???'s previous message |
Important to remember that HCT - but not HC - can be used as step-up from 3.3V to 5V, since HCT has compatible input levels with the 74LS family while the output is compatible with CMOS, i.e. swinging full range. A 74HC chip on the other hand requires full swing on the input signals too, so it can't be used to step up from 3.3V to 5V. |
| Topic | Author | Date |
| XBee and the 8051 | 01/01/70 00:00 | |
| yes | 01/01/70 00:00 | |
| Why? | 01/01/70 00:00 | |
| what are the levels? | 01/01/70 00:00 | |
| 3V from the Xbee but... | 01/01/70 00:00 | |
| mixed signal levels | 01/01/70 00:00 | |
| Woops. I was half asleep. | 01/01/70 00:00 | |
| level conversion | 01/01/70 00:00 | |
| I should have known | 01/01/70 00:00 | |
| Important that you use HCT and not HC | 01/01/70 00:00 | |
I know ; - ) but thanks! | 01/01/70 00:00 |