| ??? 10/06/03 16:17 Read: times |
#56183 - RE: serial 4 digit 7-segment LED driver Responding to: ???'s previous message |
I think I will go with 4 x 74HC595. Can sink/source 25mA,...
No! Continuous current through Vcc or GND pins is +-70mA maximum. So, dividing this by 8 only about 9mA may flow per pin. There are some nice high efficiency 7-segment displays on the market, only needing about 5mA for fabricating enough brightness. Bad thing is I will have to add 32 resistors,... Come on, that's not so bad. Take a few single-in-line resistor arrays, and you will not even waste any relevant PCB area. Kai |
| Topic | Author | Date |
| serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
| RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
| RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
| RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
| RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
| RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
| RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
| RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
| RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
| RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 | |
RE: serial 4 digit 7-segment LED driver | 01/01/70 00:00 |