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Registered Member #16903
Joined: Thu May 09 2013, 08:00PM
Location: Sumter, SC
Posts: 23
Okay I am building a midi interrupted sstc and decided to etch my own board i've just finished the board layout and want your opinion/improvements on it
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
1. There are no bypass capacitors on any of the ICs. A 0.1uF should be provided directly across the VCC / GND of each IC.
2. For power coming onto the board, there should be a bulk storage capacitor for power. This is generally sized about 10x the total bypass capacitance you have on the board. (General guideline)
Registered Member #16903
Joined: Thu May 09 2013, 08:00PM
Location: Sumter, SC
Posts: 23
okay i've updated the board by putting bypass caps but the power will filtered on another board. also i changed the 74hc14 dip to a SN74HCT14DRG3 soic because that's all i could get ahold of.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
You still want to have a small reservoir capacitor on your target board. A 100uF-1000uF would probably be good. Its good practice, especially if there are long wires between the two boards.
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midi sstc driver board questions
