Octal Bus Transceivers

These octal Bus Transceivers are designed for asynchronous two-way Communication between data buses. The 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 enable input (G) CAN be used to disable the device so the buses are effectively isolated.
The -1 versions of the SN74LS640 thru SN74LS642 SN74LS644, and SN74LS645 are identical to the standard versions except that the recommended maximum IOL is increased to 48 milliamperes. There are no -1 versions of the SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645.
The SN54LS640 thru SN54LS642, SN54LS644, and SN54LS645 are characterized for operation over the full military temperature range of -55C to 125C. The SN74LS640 thru SN74LS642 SN74LS644, and SN74LS645 are characterized for operation from 0C to 70C.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
SN74LS640DBRG4 Texas Instruments Octal bus transceivers 20-SSOP
SN74LS640DBRE4 Texas Instruments Octal bus transceivers 20-SSOP
SN74LS640DBR Texas Instruments Octal bus transceivers 20-SSOP
SN74LS640-1N Texas Instruments Octal bus transceivers 20-PDIP 0 to 70
SN74LS640DWRG4 Texas Instruments LS SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20, GREEN, PLASTIC, SOIC-20
SN74LS640-1NSR Texas Instruments Octal bus transceivers 20-SO 0 to 70
SN74LS640N3 Texas Instruments Octal bus transceivers 20-PDIP 0 to 70
SN74LS640-1NSRE4 Texas Instruments Octal bus transceivers 20-SO 0 to 70
SN74LS640NE4 Texas Instruments Octal bus transceivers 20-PDIP 0 to 70
SN74LS640-1DWG4 Texas Instruments Octal bus transceivers 20-SOIC 0 to 70
SN74LS640 's PackagesSN74LS640 's pdf datasheet
SN74LS640-1DW SOIC
SN74LS640-1DWE4 SOIC
SN74LS640-1DWG4 SOIC
SN74LS640-1DWR SOIC
SN74LS640-1N PDIP
SN74LS640-1NE4 PDIP
SN74LS640-1NSR SO
SN74LS640-1NSRE4 SO
SN74LS640-1NSRG4 SO
SN74LS640DW SOIC
SN74LS640DWE4 SOIC
SN74LS640DWG4 SOIC
SN74LS640DWR SOIC
SN74LS640DWRE4 SOIC
SN74LS640DWRG4 SOIC
SN74LS640N PDIP
SN74LS640N3 PDIP
SN74LS640NE4 PDIP
SN74LS640NSR SO
SN74LS640NSRE4 SO
SN74LS640NSRG4 SO




SN74LS640 Pinout, Pinouts
SN74LS640 pinout,Pin out
This is one package pinout of SN74LS640,If you need more pinouts please download SN74LS640's pdf datasheet.

SN74LS640 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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SN74LS640 Pb-Free SN74LS640 Cross Reference SN74LS640 Schematic SN74LS640 Distributor
SN74LS640 Application Notes SN74LS640 RoHS SN74LS640 Circuits SN74LS640 footprint