These octal Bus Transceivers SN54ALS640B SN54AS640, SN74ALS640B SN74AS640 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. The output-enable (OE) 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 48 mA. There is no -1 version of the SN54ALS640B. The SN54ALS640B and SN54AS640 are characterized for operation over the full military temperature range of 55C to 125C. The SN74ALS640B and SN74AS640 are characterized for operation from 0C to 70C. By Texas Instruments
Part Manufacturer Description Datasheet Samples
SN54ALS640BJ Texas Instruments Octal Bus Transceivers With 3-State Outputs 20-CDIP -55 to 125
SN54ALS640B 's PackagesSN54ALS640B 's pdf datasheet

SN54ALS640B Pinout, Pinouts
SN54ALS640B pinout,Pin out
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