DSA002621.pdf
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Texas Instruments
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SN54LS640 THRU SN54LS642, SN54LS644, SN54LS645
SN74LS640 THRU SN74LS642, SN74LS644, SN74LS645
OCTAL BUS TRANSCEIVRS
SDLS189 APRIL 1979 REVISED MARCH 1988
Copyright © 1988, Texas Instruments
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Original
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