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 ie 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
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 ie 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
