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
SN74LS645-1N Texas Instruments Octal bus transceivers 20-PDIP 0 to 70
SN74LS645N Texas Instruments Octal bus transceivers 20-PDIP 0 to 70
SN74LS645-1DWRG4 Texas Instruments LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, GREEN, PLASTIC, SOIC-20
SN74LS645DWR Texas Instruments Octal bus transceivers 20-SOIC 0 to 70
SN74LS645-1DW Texas Instruments Octal bus transceivers 20-SOIC 0 to 70
SN74LS645-1NSRE4 Texas Instruments LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, GREEN, PLASTIC, SOP-20
SN74LS645NSRE4 Texas Instruments LS SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, GREEN, PLASTIC, SOP-20
SN74LS645-1NSR Texas Instruments Octal bus transceivers 20-SO 0 to 70
SN74LS645NSR Texas Instruments Octal bus transceivers 20-SO 0 to 70
SN74LS645-1DWE4 Texas Instruments Octal bus transceivers 20-SOIC 0 to 70
SN74LS645 's PackagesSN74LS645 's pdf datasheet
SN74LS645-1DW SOIC
SN74LS645-1DWE4 SOIC
SN74LS645-1DWG4 SOIC
SN74LS645-1DWR SOIC
SN74LS645-1DWRE4 SOIC
SN74LS645-1DWRG4 SOIC
SN74LS645-1N PDIP
SN74LS645-1N3 PDIP
SN74LS645-1NE4 PDIP
SN74LS645-1NSR SO
SN74LS645-1NSRE4 SO
SN74LS645-1NSRG4 SO
SN74LS645DW SOIC
SN74LS645DWE4 SOIC
SN74LS645DWG4 SOIC
SN74LS645DWR SOIC
SN74LS645N PDIP
SN74LS645N3 PDIP
SN74LS645NE4 PDIP
SN74LS645NSR SO
SN74LS645NSRE4 SO
SN74LS645NSRG4 SO




SN74LS645 Pinout, Pinouts
SN74LS645 pinout,Pin out
This is one package pinout of SN74LS645,If you need more pinouts please download SN74LS645's pdf datasheet.

SN74LS645 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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SN74LS645 Pb-Free SN74LS645 Cross Reference SN74LS645 Schematic SN74LS645 Distributor
SN74LS645 Application Notes SN74LS645 RoHS SN74LS645 Circuits SN74LS645 footprint
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