> http://staff.washington.edu/rrcc/uwweb/1902A/1902a-1.jpg
Can anyone with a 1902A tell me what IC part number IC252 is? Some form of
hex open-collector invertor most likely, but exact details (type of 74
series logic, schmitt trigger or not etc) would be useful. D246 and R270
do something strange to the input (I think they equalise rise and fall
times) and I would like to know what type of gate they drive.
Richard
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