- SN74LS640DWR2
- N/a
- Historical semiconductor price guide (US$ - 1998). From our catalog scanning project.
- SN74LS640DWR2
- On Semiconductor
- Octal Bus Transceivers
- SN74LS640DWR
- Texas Instruments
- IC BUS/TXRX 3ST OCTAL 20SOIC - SN74LS640DWR
- SN74LS640DWRE4
- Texas Instruments
- IC BUS TRANSCEIVER 8BIT 20SOIC - SN74LS640DWRE4
- SN74LS640DWRG4
- Texas Instruments
- IC BUS TRANSCEIVER 8BIT 20SOIC - SN74LS640DWRG4