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TI(德州仪器) SN74ABT2244A
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  • TI(德州仪器) SN74ABT2244A
  • TI(德州仪器) SN74ABT2244A
  • TI(德州仪器) SN74ABT2244A
  • TI(德州仪器) SN74ABT2244A
  • TI(德州仪器) SN74ABT2244A
  • TI(德州仪器) SN74ABT2244A
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SN74ABT2244A

SN74ABT2244A

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具有 TTL 兼容型 CMOS 输入和三态输出的 8 通道、4.5V 至 5.5V 缓冲器

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These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. Together with the SN54ABT2240, SN74ABT2240A, and 'ABT2241, these devices provide the choice of selected combinations of inverting and noninverting outputs, symmetrical active-low output-enable (OE) inputs, and complementary OE and OE inputs. These devices feature high fan-out and improved fan-in.

The outputs, which are designed to sink up to 12 mA, include equivalent 25- series resistors to reduce overshoot and undershoot.

When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 2.1 V, 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.

The SN54ABT2244A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT2244A is characterized for operation from -40°C to 85°C.

  • Output Ports Have Equivalent 25- Series Resistors, So No External Resistors Are Required
  • ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
  • Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
  • State-of-the-Art EPIC-II BTM BiCMOS Design Significantly Reduces Power Dissipation
  • Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C
  • High-Impedance State During Power Up and Power Down
  • Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), Plastic (N) and Ceramic (J) DIPs, and Ceramic Flat (W) Packages

EPIC-IIB is a trademark of Texas Instruments Incorporated.

Technology familyABT
Supply voltage (min) (V)4.5
Supply voltage (max) (V)5.5
Number of channels8
IOL (max) (mA)12
Supply current (max) (µA)30000
IOH (max) (mA)-32
Input typeTTL-Compatible CMOS
Output type3-State
FeaturesDamping resistors, Over-voltage tolerant inputs, Partial power down (Ioff), Power up 3-state, Ultra high speed (tpd <5ns)
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
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