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| PartNumber | SN74AS2623N | SN74AS2645DW | SN74AS264N |
| Description | Bus Transceiver, AS Series, 1-Func, 8-Bit, True Output, TTL, PDIP20 | Bus Transceiver, AS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | Look-Ahead Carry Generator, AS Series, 4-Bit, TTL, PDIP16 |