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TI(德州仪器) SN74ALS873B
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  • TI(德州仪器) SN74ALS873B
  • TI(德州仪器) SN74ALS873B
  • TI(德州仪器) SN74ALS873B
  • TI(德州仪器) SN74ALS873B
  • TI(德州仪器) SN74ALS873B
  • TI(德州仪器) SN74ALS873B
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SN74ALS873B

SN74ALS873B

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具有三态输出的双路 4 位 D 类锁存器

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These dual 4-bit D-type latches feature 3-state outputs designed specifically for bus driving. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The dual 4-bit latches are transparent D-type latches. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs in true form, according to the function table. When LE is low, the outputs are latched. When the clear () input goes low, the Q outputs go low independently of LE. The outputs are in the high-impedance state when the output-enable () input is at a high logic level.

The SN54ALS873B and SN54AS873A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS873B and SN74AS873A are characterized for operation from 0°C to 70°C.

 

 

  • 3-State Buffer-Type Outputs Drive Bus Lines Directly
  • Bus-Structured Pinout
  • Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Plastic (NT) and Ceramic (JT) DIPs

 

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)32000
FeaturesFlow-through pinout, High speed (tpd 10-50ns)
Operating temperature range (°C)0 to 70
RatingCatalog
SOIC (DW)24159.65 mm² 15.5 x 10.3
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