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SN74LS640ML1MOTN/a438avaiOctal Bus Transceivers


SN74LS640ML1 ,Octal Bus Transceivers
SN74LS640NSR ,Octal bus transceivers
SN74LS641-1DWR ,Octal bus transceivers with open collector outputs
SN74LS641DW ,OCTAL BUS TRANSCEIVERS
SN74LS641NSR ,Octal bus transceivers with open collector outputs
SN74LS642-1DW ,Octal bus transceivers with open collector outputs
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SN74LS640ML1
Octal Bus Transceivers
----These octal bus transceivers are designed for asynchronous
two-way communication between data buses. Control function
implementation minimizes external timing requirements. These
circuits allow data transmission from the A bus to B or from the B bus
to A bus depending upon the logic level of the direction control (DIR)
input. Enable input (G) can disable the device so that the buses are
effectively isolated.
DEVICE OUTPUT LOGIC

LS640 3-State Inverting
LS641 Open-Collector True
LS642 Open-Collector Inverting
LS645 3-State True
FUNCTION TABLE

H = HIGH Level, L = LOW Level, X = Irrelevant
GUARANTEED OPERATING RANGES (SN74LS640, SN74LS645)
GUARANTEED OPERATING RANGES (SN74LS641, SN74LS642)
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