Nigel, I have used the 5522 without issue. The 5523 appears to be a
"better" device with higher clock frequency and 5V logic. I use the
blanking input on the 5522 and a PWM output from the uC for dimming. I
have used th 5522 with 5V logic directly and 3V3 logic (from a
raspberrypi) via a level shifter. Finally, I've chained 3 together to
give 96 HV outputs. I normally use the SPI output rather than bit bang.
So, not quite your question answered but I would have no immediate concerns.
Grahame
On 15/10/2014 09:06, Nigel Walker wrote:
I was thinking about using the HV5523 to drive some ZM1040 nixies as
these would seem ideal - 32 channels of high voltage drive capability
and serial data in. I just wondered if anyone else had used these
devices and if so, were there any issues?
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