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DM74AS157SJ Specifications
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TypeParameter
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Supplier Device Package16-SOP
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Package / Case16-SOIC (0.209", 5.30mm Width)
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Mounting TypeSurface Mount
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Operating Temperature0°C ~ 70°C
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Voltage - Supply4.5V ~ 5.5V
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Voltage Supply SourceSingle Supply
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Current - Output High, Low2mA, 20mA
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Independent Circuits1
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Circuit4 x 2:1
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TypeMultiplexer
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PackagingTube
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Product StatusObsolete
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Series74AS
The SN74HC139DR is a dual 2-to-4 line decoder/demultiplexer chip designed for high-speed CMOS logic operation. Its advantages and application scenarios include:1. Versatility: The chip can function as both a decoder and a demultiplexer, allowing it to route signals to different output lines based on the input code. This flexibility makes it suitable for various applications.2. High-speed operation: The chip is capable of high-speed CMOS logic operation, making it useful in applications that require fast signal routing.3. Low power consumption: The SN74HC139DR operates at low power levels, making it energy-efficient and suitable for portable devices or applications with limited power resources.4. Wide voltage range: The chip can operate within a wide voltage range, typically 2V to 6V, allowing for compatibility with different power supply levels.5. Easy integration: The chip is available in a standard 16-pin SOIC package, which is widely used and can be easily integrated into circuit designs.Application scenarios:1. Address decoding: The SN74HC139DR can be used to decode different address lines in a digital system, allowing for the selection of specific memory locations or peripheral devices.2. Demultiplexing: The chip can be used to demultiplex a single input signal into multiple output lines, useful in applications such as data routing or channel selection.3. Data routing: The chip can be used to route data streams to different output lines based on the input code, making it suitable for applications like data transmission or signal multiplexing.4. Peripheral device selection: In systems with multiple peripheral devices, the chip can be used to select the active device by decoding the appropriate input signal from a microcontroller or other control unit.5. Logic functions: Due to its versatility, the SN74HC139DR can also be used to implement various logic functions, such as AND or OR gates, by appropriately connecting the input lines and interpreting the output lines accordingly.Overall, the SN74HC139DR integrated circuit chips are advantageous due to their versatility, high-speed operation, low power consumption, and wide voltage range. They find applications in address decoding, demultiplexing, data routing, peripheral device selection, and logic functions.
DM74AS157SJ Relevant information