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SN74LS148J from MOT,Motorola

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SN74LS148J

Manufacturer: MOT, TIX

8-line to 3-line priority encoder
Partnumber Manufacturer Quantity Availability
SN74LS148J MOT, TIX 327 In Stock

Description and Introduction

8-line to 3-line priority encoder The SN74LS148J is a 8-line to 3-line priority encoder manufactured by Motorola (MOT).  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Number of Inputs:** 8 (active-low)  
- **Number of Outputs:** 3 (active-low, binary encoded)  
- **Supply Voltage Range:** 4.75V to 5.25V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package Type:** DIP (Dual In-line Package)  
- **Pin Count:** 16  
- **Propagation Delay:** Typically 30ns  
- **Power Dissipation:** Low power consumption  

### **Descriptions and Features:**  
- **Priority Encoding:** The highest-order active input determines the binary output.  
- **Active-Low Inputs/Outputs:** Inputs (I0-I7) and outputs (A0-A2) are active-low.  
- **Enable Input (EI):** Active-low enable input for cascading multiple encoders.  
- **Group Select (GS):** Active-low output indicating at least one active input.  
- **Enable Output (EO):** Active-low output for cascading (high when all inputs are inactive).  
- **Applications:** Used in digital systems for interrupt handling, keyboard encoding, and priority resolution.  

This information is based solely on the manufacturer's datasheet and specifications.

Application Scenarios & Design Considerations

8-line to 3-line priority encoder

Alternative Part Number

  • DM74LS148N --: Same 8-to-3 priority encoder function in the 74LS family, widely available DIP package, direct functional equivalent.
  • MC74LS148N --: Motorola's own 74LS148 priority encoder in a plastic DIP, same logic family and pinout as the original.
  • CD74HCT148E --: HCT-family 8-to-3 priority encoder with TTL-compatible inputs, suitable drop-in replacement where LS speed is not critical.
  • CD74HC148E --: CMOS version of the 8-to-3 priority encoder, pin-compatible with lower power consumption, suitable when LS speed is not critical.

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