I used a high speed hex inverter. Worked fine.
As for the 23pin connector in my case, I just file away 2 pins worth of a d25. Doesn't look pretty but it works. As an added bonus 25 pin shells are abundant and large enough to fit the IC and cap in. Just don't put the screw thingy in the filed off side. It'll hit the case and stop the connector from plugging in.
Just thought I'd mention it because I absolutely could not get a d23.
