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Product Detailed Parameters
- Description：MULTIPLEXER, LS SERIES TTL
- Series：*
- Mfr：onsemi
- Package：Bulk
- Type：-
- Circuit：-
- Independent Circuits：-
- Current - Output High, Low：-
- Voltage Supply Source：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The SN74LS157MR1 is a quad 2-input multiplexer manufactured by onsemi, belonging to the LS-TTL logic family. It features four independent data selectors with common selection inputs and an active-low enable input. The device operates at a supply voltage of 5 V and is housed in a 16-pin SOIC package. It supports a maximum output current of 8 mA and functions within a temperature range up to 70 °C.
Feature Summary
- Integrates four independent 2-to-1 multiplexers within a single integrated circuit
- Utilizes Low-power Schottky (LS) TTL technology for efficient operation
- Includes a common selection input to control all four multiplexers simultaneously
- Features an active-low enable input for controlling data flow
Applications
- Data routing in digital logic systems
- Signal selection in microprocessor interfaces
- Address decoding circuits
Procurement Notes
Verify the manufacturer marking matches onsemi specifications. Confirm the package type corresponds to the SOIC-16 variant. Ensure the component meets LS-TTL electrical standards. Check for any specific ordering suffixes that may indicate tape-and-reel packaging or environmental compliance variations. Validate authenticity through authorized distribution channels.
Selection Notes
Select this component when a compact solution for routing multiple digital signals is required. It is suitable for designs utilizing standard 5V TTL logic levels. Consider the package constraints and thermal requirements relative to the application environment. Verify compatibility with existing selection and enable signal logic levels.
Part Context
This part is part of the SN74LS series, which provides low-power Schottky switching capabilities. It serves as a functional equivalent to other manufacturers' quad multiplexers in the same logic family. The MR1 suffix typically denotes the SOIC package and reel quantity configuration.
Replacement Considerations
Compatible substitutes include the SN74LS157 from Texas Instruments and the MC74LS157 from onsemi. Verify pinout compatibility and electrical characteristics before substitution.
