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TI(德州仪器) SN74ALVCH244
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  • TI(德州仪器) SN74ALVCH244
  • TI(德州仪器) SN74ALVCH244
  • TI(德州仪器) SN74ALVCH244
  • TI(德州仪器) SN74ALVCH244
  • TI(德州仪器) SN74ALVCH244
  • TI(德州仪器) SN74ALVCH244
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SN74ALVCH244

SN74ALVCH244

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具有总线保持和三态输出的 8 通道、1.65V 至 3.6V 缓冲器

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This octal buffer/line driver is designed for 1.65-V to 3.6-V VCC operation.

The SN74ALVCH244 is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

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 2.8 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 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)

Technology familyALVC
Supply voltage (min) (V)1.65
Supply voltage (max) (V)3.6
Number of channels8
IOL (max) (mA)24
Supply current (max) (µA)10
IOH (max) (mA)-24
Input typeStandard CMOS
Output type3-State
FeaturesBalanced outputs, Bus-hold, Over-voltage tolerant inputs, Very high speed (tpd 5-10ns)
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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