SN74ALS857

具有三态输出的六路 2 线路至 1 线路通用多路复用器

The ´ALS857 are hextuple 2-line to 1-line multiplexers with 3-state outputs. The devices can provide either true COMP low or inverted COMP high data at the Y outputs. In addition, the ´ALS857 perform the logical AND function A \x95 B and the clear function as well. The four modes of operation are:

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Select A-data inputs

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Select B-data inputs

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AND A inputs with B inputs

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Clear

In either of the first two modes, OPER = 0 is high if all the selected A or B inputs are low. The six Y outputs and the OPER = 0 output are all 3-state and rated at 12-mA and 24-mA IOL for the SN54ALS857 and , respectively. All outputs can be placed in the high-impedance state by applying a high level to the COMP, S0, and S1 inputs simultaneously.

The SN54ALS857 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS857 is characterized for operation from 0°C to 70°C.

 

 

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Select True or Complementary Data

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Perform AND/NAND Masking of A or B Operand

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Cascadable to Expand Number of Operands

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Detect Zeros on A or B Operands

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3-State Outputs Interface Directly With System Bus

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Package Options Include Plastic Small-Outline DW Packages, Ceramic Chip Carriers FK, and Standard Plastic NT and Ceramic JT 300-mil DIPs