| ??? 02/03/11 07:50 Read: times |
#180975 - Paralleling Max232 output |
I have a device A, which has a MAX. I need to take the max output to device B and C, both with MAXes.. Device B and C would query A for parameters and A would send the parameters back. A and B are not in my control and C is made by me. I generally parallel B and C, and In C's path, I insert 2.2K resistors (even though I don't need resistor in Rx line OF c, I generally add one 2.2k) a resistor. The possibility of both B and C transmitting together (clash) at the same time is something like 4 times a minute. The whole arrangement works without any apparent issues.
1. How good is this method? 2. Since the input Z of Max is 3 to 7k, the nominal load current capability of MAX is 1 to 2 mA. So I should be adding 3K + series resistor? 3. Will this cause any wave form shape distortion effect because of any capacitance inside MAX? Please guide. |
| Topic | Author | Date |
| Paralleling Max232 output | 01/01/70 00:00 | |
| Revommedation On Paralleling Outputs | 01/01/70 00:00 | |
| Multiple Mux | 01/01/70 00:00 | |
| Adding another brain is another option. | 01/01/70 00:00 | |
| RS232 is *not* a bus | 01/01/70 00:00 | |
| Two UART | 01/01/70 00:00 | |
| how about a hub | 01/01/70 00:00 | |
| Is there really such a beast? | 01/01/70 00:00 | |
| external UARTs | 01/01/70 00:00 | |
| There once was... | 01/01/70 00:00 | |
| use 422/485 | 01/01/70 00:00 | |
| Can work well but big potentials for trouble | 01/01/70 00:00 | |
| Thanks, Peter.. | 01/01/70 00:00 | |
| I didn't employ anything | 01/01/70 00:00 | |
| some comments | 01/01/70 00:00 | |
| You really need reliable protocol | 01/01/70 00:00 | |
| collision detection | 01/01/70 00:00 | |
Collision avoidance | 01/01/70 00:00 |