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SN74ALS251

Features: • 3-State Version of the 4ALS151• 3-State Outputs Interface Directly With System Bus• Perform Parallel-to-Serial Conversion• Complementary Outputs Provide True and Inverted Data• Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carrie...

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SeekIC No. : 004498119 Detail

SN74ALS251: Features: • 3-State Version of the 4ALS151• 3-State Outputs Interface Directly With System Bus• Perform Parallel-to-Serial Conversion• Complementary Outputs Provide True and ...

SN74ALS251 Data Sheet

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Part Number:
SN74ALS251
Supply Ability:
5000

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  • 1~5000
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  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• 3-State Version of the 4ALS151
• 3-State Outputs Interface Directly With System Bus
• Perform Parallel-to-Serial Conversion
• Complementary Outputs Provide True and Inverted Data
• Package Options Include Plastic
  Small-Outline (D) Packages, Ceramic Chip
  Carriers (FK), and Standard Plastic (N) and
  Ceramic (J) 300-mil DIP


Pinout

Connection Diagram


Specifications

Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 V
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.5 V
Operating free-air temperature range, TA:SN54ALS251 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C
SN74ALS251 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C


Description

These SN74ALS251 data selectors/multiplexers contain full binary decoding to select one-of-eight data sources and feature controlled complementary 3-state outputs.

The SN74ALS251 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (at the high-impedance state), the low impedance of the signal-enabled output drives the bus line to a high or low logic level. Both outputs are controlled by the output-enable (OE) input. The outputs are disabled when OE is high.

The SN54ALS251 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ALS251 is characterized for operation from 0°C to 70°C.




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