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TI(德州仪器) SN74ALS574B
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  • TI(德州仪器) SN74ALS574B
  • TI(德州仪器) SN74ALS574B
  • TI(德州仪器) SN74ALS574B
  • TI(德州仪器) SN74ALS574B
  • TI(德州仪器) SN74ALS574B
  • TI(德州仪器) SN74ALS574B
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SN74ALS574B

SN74ALS574B

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具有三态输出的八路 D 类边沿触发器

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These octal D-type edge-triggered flip-flops feature 3-state outputs designed specifically for bus driving. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The eight flip-flops enter data on the low-to-high transition of the clock (CLK) input. The SN74ALS575A, SN54AS575, and SN74AS575 may be synchronously cleared by taking the clear () input low.

The output-enable () input does not affect internal operations of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The SN54ALS574B, SN54AS574, and SN54AS575 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS574B, SN74ALS575A, SN74AS574, and SN74AS575 are characterized for operation from 0°C to 70°C.

  • 3-State Buffer-Type Noninverting Outputs Drive Bus Lines Directly
  • Bus-Structured Pinout
  • Buffered Control Inputs
  • SN74ALS575A and ´AS575 Have Synchronous Clear
  • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), Standard Plastic (N, NT) and Ceramic (J, JT) 300-mil DIPs, and Ceramic Flat (W) Packages

 

Number of channels8
Technology familyALS
Supply voltage (min) (V)4.5
Supply voltage (max) (V)5.5
Input typeBipolar
Output type3-State
Clock frequency (max) (MHz)75
IOL (max) (mA)24
IOH (max) (mA)-2.6
Supply current (max) (µA)30000
FeaturesHigh speed (tpd 10-50ns)
Operating temperature range (°C)0 to 70
RatingCatalog
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
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