SN54LS640 THRU SN54LS642, SN54LS644, SN54LS645
SN74LS640 THRU SN74LS642, SN74LS644, SN74LS645
OCTAL BUS TRANSCEIVRS
SDLS189 – APRIL 1979 – REVISED MARCH 1988
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1988, Texas Instruments Incorporated
POST OFFICE BOX 655303
DALLAS, TEXAS 75265