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SN74LS157DR from TI,Texas Instruments

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SN74LS157DR

Manufacturer: TI

Quadruple 2-Line To 1-Line Data Selectors/Multiplexers
Partnumber Manufacturer Quantity Availability
SN74LS157DR TI 2819 In Stock

Description and Introduction

Quadruple 2-Line To 1-Line Data Selectors/Multiplexers ### Manufacturer:  
Texas Instruments (TI)  

### Part Number:  
SN74LS157DR  

### Specifications:  
- **Logic Type**: Quad 2-Input Multiplexer  
- **Technology Family**: LS (Low-Power Schottky)  
- **Number of Circuits**: 4  
- **Number of Inputs**: 2 per multiplexer  
- **Supply Voltage (VCC)**: 4.75V to 5.25V  
- **Operating Temperature Range**: 0°C to 70°C  
- **Package / Case**: SOIC-16  
- **Mounting Type**: Surface Mount  
- **Propagation Delay Time**: 15ns (typical)  
- **Output Type**: Standard  
- **Current - Output High, Low**: 400µA, 8mA  
- **Logic Level - Low**: 0.8V (max)  
- **Logic Level - High**: 2V (min)  

### Descriptions:  
The SN74LS157DR is a quad 2-input multiplexer from Texas Instruments' LS series. It selects one of two data sources (A or B) based on the select input (S). All four multiplexers share a common select input, making it suitable for data routing applications.  

### Features:  
- **Low Power Consumption**: LS technology ensures reduced power usage.  
- **Common Select Input**: Simplifies control logic.  
- **Wide Operating Voltage Range**: 4.75V to 5.25V.  
- **High-Speed Operation**: Typical propagation delay of 15ns.  
- **Surface-Mount Package**: SOIC-16 for compact PCB designs.  
- **Schottky-Clamped**: Improves switching performance.  
- **Buffered Outputs**: Ensures clean signal transmission.  

(Data sourced from Texas Instruments' official documentation.)

Application Scenarios & Design Considerations

Quadruple 2-Line To 1-Line Data Selectors/Multiplexers

Alternative Part Number

  • DM74LS157N --: Quad 2-to-1 multiplexer in the same LS TTL family with equivalent function and pinout, widely available as a direct functional replacement.
  • 74LS157PC --: Same TI LS-series quad 2-line to 1-line data selector/multiplexer in a DIP package, electrically equivalent to the SOIC original.
  • SN74HC157DR --: CMOS HC-series quad 2-to-1 multiplexer with the same logic function and pinout, offering lower power consumption as a modern alternative.
  • DM74LS157MX --: Pin-compatible quad 2-to-1 multiplexer in the same LS logic family, available in SOIC-16, direct functional drop-in replacement.
  • 74LS157D --: Equivalent quad 2-line to 1-line data selector/multiplexer in SOIC-16 package with matching LS TTL characteristics.
  • SN74LS157N --: Same TI LS157 function in a PDIP-16 package, suitable when through-hole mounting is acceptable instead of SOIC.

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