Looking for info on Motorola 4015 chip

Brent Hilpert bhilpert at shaw.ca
Sat May 12 15:08:37 CDT 2018

On 2018-May-12, at 11:03 AM, Noel Chiappa via cctalk wrote:
> Hey, all, the RK11-D contoller for the PDP-11 uses Motorola 4015 MSI chips on
> one of the boards (M7254), but I can't find out anything about them. Google
> didn't turn anything up, and the appendix in the RK11-D Maintenance Manual
> that has info about 'all' the MSI chips used in the RK11-D doesn't have this
> one. It appears to be a quad flop - anyone have more info? Thanks!

If it comes to replacement, the 74LS279 (quad nSnR latch) looks like a good candidate to consider in the application.

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