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TI(德州仪器) SN74ALVCH245
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  • TI(德州仪器) SN74ALVCH245
  • TI(德州仪器) SN74ALVCH245
  • TI(德州仪器) SN74ALVCH245
  • TI(德州仪器) SN74ALVCH245
  • TI(德州仪器) SN74ALVCH245
  • TI(德州仪器) SN74ALVCH245
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SN74ALVCH245

SN74ALVCH245

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具有三态输出的八通道总线收发器

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This octal bus transceiver is designed for 1.65-V to 3.6-V VCC operation.

The SN74ALVCH245 is designed for asynchronous communication between data buses. The device transmits data 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 be used to disable the device so the buses are effectively isolated.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

  • Operates From 1.65 V to 3.6 V
  • Max tpd of 3.4 ns at 3.3 V
  • ±24-mA Output Drive at 3.3 V
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II

Supply voltage (min) (V)1.65
Supply voltage (max) (V)3.6
Number of channels8
IOL (max) (mA)24
IOH (max) (mA)-24
Input typeLVTTL
Output typeLVTTL
FeaturesBalanced outputs, Bus-hold, Ultra high speed (tpd <5ns)
Technology familyALVC
RatingCatalog
Operating temperature range (°C)-40 to 85
SOIC (DW)20131.84 mm² 12.8 x 10.3
TSSOP (PW)2041.6 mm² 6.5 x 6.4
TVSOP (DGV)2032 mm² 5 x 6.4
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