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Product Detailed Parameters
- Description：IC DATA SEL/MUX QUAD 1-2 16SO
- Series：*
- Mfr：Texas Instruments
- 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 SN74AS157NS is a quadruple 1-of-2 data selector/multiplexer from the Texas Instruments AS logic series. It features four independent multiplexers in a 16-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a propagation delay of 4.5 ns. It functions across an operating temperature range of 0°C to +70°C, providing high-speed data routing capabilities for digital logic applications.
Feature Summary
- Integrates four independent 2-to-1 multiplexers for parallel data selection
- Utilizes Advanced Schottky (AS) technology for high-speed signal processing
- Provides common select and strobe inputs to control all four channels simultaneously
Applications
- Data selection and routing in microprocessor systems
- Signal switching in digital logic circuits
- Data acquisition equipment input multiplexing
Procurement Notes
Verify the specific suffix 'NS' corresponds to the 16-pin SOIC package and commercial temperature grade when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure the component matches the required logic family specifications for your design.
Selection Notes
Select this component when high-speed data multiplexing is required with standard 5V logic levels. The AS series offers faster performance than standard TTL but consumes more power. Consider thermal management if multiple units are used in dense PCB layouts due to the higher current draw associated with Advanced Schottky technology compared to lower-power alternatives.
Part Context
This part belongs to the SN74AS157 family of quadruple multiplexers. It shares functional compatibility with other 157-series devices but differs in speed and power characteristics due to its Advanced Schottky construction. It serves as a high-performance alternative to slower logic families for time-critical digital signal routing tasks.
Replacement Considerations
SN74AS157N is a pin-compatible variant in a different package. SN74ALS157ANSR offers similar functionality with lower power consumption but slower speed. Verify electrical parameters against original requirements before substitution.
