Ok, I must have bad luck if you guys remember I had a uln2803 fail, probably my error, I have a circuit with two 74hc595 shift registers driving two uln2803 anyway and this time a 74hc595 failed with the last 4 outputs stuck on, even with the output enable off, the first one is fine and half of thi…

74hc595 failure?

pwillard June 15, 2012, 12:08am 10

The HC family are CMOS logic based... known for sensitivity to static... and why most parts are now shipped in anti-static containers.

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