| ??? 07/17/06 12:46 Read: times |
#120373 - why the 4066? Responding to: ???'s previous message |
Here is a circuit I use on a GPS vehicle tracker device I sell.
why the 4066?, why use an essentially analog part for a digital signal? Use an AND gate (I do not recall the 40xx number) instead and get a much better signal integrity. Otherwise what you have will work, with the exception that it will 'go blind' to receiving from the disconnected channel. I might connect the DI pins of the MAX232 to interrupts, while that would not make it read correctly, alt least, you would know that you missed. Even better bit bang one of the ports better yet use an external UART very best use a uC with 2 serial ports (Keil device database) Erik |
| Topic | Author | Date |
| two db9 pins for one uart. | 01/01/70 00:00 | |
| MAX3223 | 01/01/70 00:00 | |
| MAX232 | 01/01/70 00:00 | |
| Circuit I use on my GPS vehicle tracker device | 01/01/70 00:00 | |
why the 4066? | 01/01/70 00:00 |