SN74ALS640BN

TEXAS INSTRUMENTS  SN74ALS640BN  收发器, 双向, 4.5V至5.5V, DIP-20

The is an octal Bus Transceiver designed for asynchronous 2-way communication between data buses. This device transmits 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. The output-enable input can be used to disable the device so that the buses are effectively isolated. The -1 version of the SN74ALS640B is identical to the standard version, except that the recommended maximum IOL for the -1 version is increased to 48mA. The SN74ALS640B is characterized for operation from 0 to 70°C.

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Inverting logic