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Correction!! Motorola or Systron Donner Part

W

Willco

Jan 1, 1970
0
I'm looking for a custom IC marked 528 55178 it's used in a Motorola
S1344AAB Frequency Counter/Auto Tune Deviation Meter. The Motorola
part number is 51-80329A60

In the early 70's the unit was Manufactured by Systron Donner for
Motorola. Systron Donner's model number was SLN6407A-75. They also
manufactured a frequency counter model 6252 that is identical to the
counter section of the 1344AAB

The chip is a counter/latch with tri-state outputs. I was able to
Identify some input i.e. clock and output enable and carry. But the
other inputs are unknown.


A schematic or manual for the above equipment would help!

Jack
Willco Electronics
 
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