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TI(德州仪器) SN74ABT245B
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  • TI(德州仪器) SN74ABT245B
  • TI(德州仪器) SN74ABT245B
  • TI(德州仪器) SN74ABT245B
  • TI(德州仪器) SN74ABT245B
  • TI(德州仪器) SN74ABT245B
  • TI(德州仪器) SN74ABT245B
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SN74ABT245B

SN74ABT245B

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具有三态输出的八通道总线收发器

产品详情
  • 说明
  • 特性
  • 参数
  • 封装 | 引脚 | 尺寸

These octal bus transceivers are designed for asynchronous communication between data buses. The devices transmit 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.

This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

  • Typical VOLP (Output Ground Bounce)
       <1 V at VCC = 5 V, TA = 25°C
  • Ioff and Power-Up 3-State Support Hot Insertion
  • High-Drive Outputs (–32-mA IOH, 64-mA IOL)
  • Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)

Supply voltage (min) (V)4.5
Supply voltage (max) (V)5.5
Number of channels8
IOL (max) (mA)64
IOH (max) (mA)-32
Input typeTTL
Output typeTTL
FeaturesOver-voltage tolerant inputs, Partial power down (Ioff), Power up 3-state, Very high speed (tpd 5-10ns)
Technology familyABT
RatingCatalog
Operating temperature range (°C)-40 to 85
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
TSSOP (PW)2041.6 mm² 6.5 x 6.4
TVSOP (DGV)2032 mm² 5 x 6.4
VQFN (RGY)2015.75 mm² 4.5 x 3.5
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