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80021012A-JM38510/32803BRA-SN54LS245-SN54LS245J-SNJ54LS/245FK-SNJ54LS245FK-SNJ54LS245J
Octal Bus Transceivers With 3-State Outputs
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SN54LS245, SN74LS245SDLS146B –OCTOBER 1976–REVISED SEPTEMBER 2016
SNx4LS245 Octal Bus Transceivers With 3-State Outputs Features 3-State Outputs Drive Bus Lines Directly PNP Inputs Reduce DC Loadingon Bus Lines Hysteresisat Bus Inputs Improves Noise Margins Typical Propagation Delay Times Portto Port,ns
Applications Building Automation Electronic Pointof Sale Factory Automation and Control Test and Measurement
DescriptionThese octal bus transceivers are designed for
asynchronous two-way communication between data
buses. The control-function implementation minimizes
external timing requirements.
The SNx4LS245 devices allow data transmission
from theA busto theB busor from theB busto the bus, depending on the logic levelat the direction-
control (DIR) input. The output-enable (OE) input can
disable the device so that the buses are effectively
isolated.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Logic Diagram (Positive Logic)
