These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input.

SN74ALS641A

SN74ALS642A

SN74ALS645A

SN74ALS646A

SN74ALS648A

SN74ALS620A

SN74ALS621A

SN74ALS623A

SN74ALS638A

SN74ALS639A

SN74ALS651A

SN74ALS652A

SN74ALS653

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