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The NTE74LS640 is an octal bus transceiver in a 20-lead DIP-type package designed for asynchronous two-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 enable pin (G) can be used to disable the device so the buses are effectively isolated.
Input voltage VIN, all inputs: 7V, I/O ports: 5.5V
Operating temperature range TA: 0°C to +70°C
Storage temperature range Tstg: -65°C to +150°C
Voltage values are with respect to network ground terminal
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