| ??? 05/08/07 14:08 Read: times |
#138833 - The chip will be destroyed. Responding to: ???'s previous message |
There is a diode between Vcc and ground. Reversing the supplies forward biases this diode. If the current exceeds 1 amp, then the bond wires will probably melt. There can also be damage to the internal power buses.
If you have a very weak supply that limits the current to small amounts, then maybe the chip will survive. It is hard to trust a chip that has been overstressed. It may have internal damage that fails later. Or it may have a now-working section that you just don't know about because you haven't checked it. |
| Topic | Author | Date |
| what happen if ?? | 01/01/70 00:00 | |
| you will fry the chip usually | 01/01/70 00:00 | |
| and | 01/01/70 00:00 | |
| The chip will be destroyed. | 01/01/70 00:00 | |
| this question should not be asked | 01/01/70 00:00 | |
| a note: "the danger of DIL" | 01/01/70 00:00 | |
| if it's a windowed EPROM... | 01/01/70 00:00 | |
| Probably nothing... | 01/01/70 00:00 | |
| junction and ambient | 01/01/70 00:00 | |
| The worst example of backwards power | 01/01/70 00:00 | |
| Off-topic, but... | 01/01/70 00:00 | |
| Two ships passing in the night | 01/01/70 00:00 | |
| Yep | 01/01/70 00:00 | |
| John's Pizza | 01/01/70 00:00 | |
| small town and small world | 01/01/70 00:00 | |
Excellent | 01/01/70 00:00 | |
| Rocket Scientists do it too ... | 01/01/70 00:00 | |
| Answers | 01/01/70 00:00 | |
| Answers | 01/01/70 00:00 | |
| Junction | 01/01/70 00:00 | |
| Try it, we will also come to know wha will happen. | 01/01/70 00:00 | |
| no, we wont | 01/01/70 00:00 | |
| LM78L05 ! | 01/01/70 00:00 |