Part Number: 140AJJ215 (Component) Part Number: 140AJJ224 (Component) Part Number: 140AK (At&t microelectronics) Part Number: 140AK12883B (Microcircuit) Part Number: 140AK-15 (Semi) Part Number: 140AK-15883C (Ic) Part Number: 140AK-50 (National semiconductor) Part Number: 140AL (No description) Part Number: 140ALD022 (No description) Part Number: 140AM (At&t) Part Number: 140AMM09000 (No description) Part Number: 140AN (Dip) Part Number: 140AP (No description) Part Number: 140ARI03010 (Available)