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SN74LV244AT

現行

具有 TTL 相容 CMOS 輸入和 3 態輸出的 8 通道、4.5-V 至 5.5-V 緩衝器

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產品規格表

SN74LV244AT

現行
產品規格表 立即訂購

產品詳細資料

Technology family LV-AT Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 8 IOL (max) (mA) 16 Supply current (max) (µA) 20 IOH (max) (mA) -16 Input type TTL-Compatible CMOS Output type 3-State Features Balanced outputs, Over-voltage tolerant inputs, Partial power down (Ioff), Very high speed (tpd 5-10ns) Rating Catalog Operating temperature range (°C) -40 to 85
Technology family LV-AT Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 8 IOL (max) (mA) 16 Supply current (max) (µA) 20 IOH (max) (mA) -16 Input type TTL-Compatible CMOS Output type 3-State Features Balanced outputs, Over-voltage tolerant inputs, Partial power down (Ioff), Very high speed (tpd 5-10ns) Rating Catalog Operating temperature range (°C) -40 to 85
SOIC (DW) 20 131.84 mm² 12.8 x 10.3 SOP (NS) 20 98.28 mm² 12.6 x 7.8 TSSOP (PW) 20 41.6 mm² 6.5 x 6.4 VQFN (RGY) 20 15.75 mm² 4.5 x 3.5
  • Inputs Are TTL-Voltage Compatible
  • 4.5-V to 5.5-V VCC Operation
  • Typical tpd = 5.4 ns at 5 V
  • Typical VOLP (Output Ground Bounce)
    <0.8 V at VCC = 5 V, TA = 25°C
  • Typical VOHV (Output VOH Undershoot)
    >2.3 V at VCC = 5 V, TA = 25°C
  • Supports Mixed-Mode Voltage Operation on All Ports
  • Ioff Supports Partial-Power-Down Mode Operation
  • 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)
    • 1000-V Charged-Device Model (C101)
  • Inputs Are TTL-Voltage Compatible
  • 4.5-V to 5.5-V VCC Operation
  • Typical tpd = 5.4 ns at 5 V
  • Typical VOLP (Output Ground Bounce)
    <0.8 V at VCC = 5 V, TA = 25°C
  • Typical VOHV (Output VOH Undershoot)
    >2.3 V at VCC = 5 V, TA = 25°C
  • Supports Mixed-Mode Voltage Operation on All Ports
  • Ioff Supports Partial-Power-Down Mode Operation
  • 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)
    • 1000-V Charged-Device Model (C101)

This octal buffer/driver is designed specifically to improve both the performance and density of 3-state memory-address drivers, clock drivers, and bus-oriented receivers and transmitters.

The SN74LV244AT is organized as two 4-bit buffers/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 shall 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 partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

This octal buffer/driver is designed specifically to improve both the performance and density of 3-state memory-address drivers, clock drivers, and bus-oriented receivers and transmitters.

The SN74LV244AT is organized as two 4-bit buffers/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 shall 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 partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
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* Data sheet SN74LV244AT datasheet (Rev. C) 2005年 8月 5日

訂購與品質

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  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

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