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TI(德州仪器) SN74LS245
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  • TI(德州仪器) SN74LS245
  • TI(德州仪器) SN74LS245
  • TI(德州仪器) SN74LS245
  • TI(德州仪器) SN74LS245
  • TI(德州仪器) SN74LS245
  • TI(德州仪器) SN74LS245
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SN74LS245

SN74LS245

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八通道总线收发器

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These 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 the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can disable the device so that the buses are effectively isolated.

  • 3-State Outputs Drive Bus Lines Directly
  • PNP Inputs Reduce DC Loading on Bus Lines
  • Hysteresis at Bus Inputs Improves Noise Margins
  • Typical Propagation Delay Times Port to Port, 8 ns
Supply voltage (min) (V)4.75
Supply voltage (max) (V)5.25
Number of channels8
IOL (max) (mA)24
IOH (max) (mA)-15
Input typeTTL
Output typeTTL
FeaturesHigh speed (tpd 10-50ns)
Technology familyLS
RatingCatalog
Operating temperature range (°C)0 to 70
PDIP (N)20228.702 mm² 24.33 x 9.4
SOIC (DW)20131.84 mm² 12.8 x 10.3
SOP (NS)2098.28 mm² 12.6 x 7.8
SSOP (DB)2056.16 mm² 7.2 x 7.8
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