Octal Bus Transceivers With Open Collector Outputs

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
SN74LS642DWR2 Rochester Electronics LLC Bus Transceiver, LS Series, 1-Func, 8-Bit, Inverted Output, TTL, PDSO20, PLASTIC, SOIC-20
SN74LS642MEL Rochester Electronics LLC Bus Transceiver, LS Series, 1-Func, 8-Bit, Inverted Output, TTL, PDSO20, EIAJ, SOP-20
SN74LS642M Rochester Electronics LLC Bus Transceiver, LS Series, 1-Func, 8-Bit, Inverted Output, TTL, PDSO20, EIAJ, SOP-20
SN74LS642NSRE4 Texas Instruments LS SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20, GREEN, PLASTIC, SOP-20
SN74LS642-1DWE4 Texas Instruments LS SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20, GREEN, PLASTIC, SOIC-20
SN74LS642DW Texas Instruments Octal bus transceivers with open collector outputs 20-SOIC 0 to 70
SN74LS642-1DWG4 Texas Instruments LS SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20, GREEN, PLASTIC, SOIC-20
SN74LS642NE4 Texas Instruments Octal bus transceivers with open collector outputs 20-PDIP 0 to 70
SN74LS642NSR Texas Instruments Octal bus transceivers with open collector outputs 20-SO 0 to 70
SN74LS642-1DW Texas Instruments Octal bus transceivers with open collector outputs 20-SOIC 0 to 70
SN74LS642 's PackagesSN74LS642 's pdf datasheet
SN74LS642-1DW SOIC
SN74LS642-1DWE4 SOIC
SN74LS642-1DWG4 SOIC
SN74LS642-1N PDIP
SN74LS642-1NE4 PDIP
SN74LS642DW SOIC
SN74LS642DWE4 SOIC
SN74LS642DWG4 SOIC
SN74LS642N PDIP
SN74LS642NE4 PDIP
SN74LS642NSR SO
SN74LS642NSRE4 SO
SN74LS642NSRG4 SO




SN74LS642 Pinout, Pinouts
SN74LS642 pinout,Pin out
This is one package pinout of SN74LS642,If you need more pinouts please download SN74LS642's pdf datasheet.

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SN74LS642 Pb-Free SN74LS642 Cross Reference SN74LS642 Schematic SN74LS642 Distributor
SN74LS642 Application Notes SN74LS642 RoHS SN74LS642 Circuits SN74LS642 footprint
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