| ??? 08/12/11 12:20 Modified: 08/12/11 12:43 Read: times |
#183327 - Talking About Circuits Responding to: ???'s previous message |
Murray,
The MOSFET idea is not a real good one. Use of a N Channel MOSFET requires a pullup resistor on the drain. Depending upon the circuit configuration it could consume more power than the low current requirements of an inverter package. The problems I see with trying to steer toward the cheap type solutions is the chance that you get crappy erratic behavior when you start presenting slow rise time signals into MCUs. The data sheet for the NXP 74HC2G14 shows that the 25C MAX ICC for the part is 1uA. In actual practice it will be less than that. In the end you decide what to do with your circuit. I showed what I would recommend for a commercial grade product that I would want to be reliable as possible. Michael Karas |
| Topic | Author | Date |
| Generating Interrupt Signal. | 01/01/70 00:00 | |
| Power for inverter | 01/01/70 00:00 | |
| 74HC1G14GW | 01/01/70 00:00 | |
| Yep, that will do the job. | 01/01/70 00:00 | |
| Catching the L--->TS Condition | 01/01/70 00:00 | |
| Less logic? | 01/01/70 00:00 | |
| Talking About Circuits | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| Open inputs | 01/01/70 00:00 | |
Will do. | 01/01/70 00:00 |