View source for Mostek MK5007

{{Monolithic IC
|Manufacturer=Mostek 
|Model=MK5007
|Part_nos=156-0409-00
|Description=four-decade BCD counter with latches and output multiplexer
|Used_in=213;DC505;DC505A;
}}.

It was fabricated in an ion-implanted P-MOS process and needs a −12 V supply in addition to the +5 V rail.
Maximum input frequency is 250 kHz.