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SN74ALS27ANSR from TI,Texas Instruments

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SN74ALS27ANSR

Manufacturer: TI, TEXAS

Triple 3-Input Positive NOR Gates
Partnumber Manufacturer Quantity Availability
SN74ALS27ANSR TI, TEXAS 2891 In Stock

Description and Introduction

Triple 3-Input Positive NOR Gates The SN74ALS27ANSR is a triple 3-input NOR gate manufactured by Texas Instruments. Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Logic Type:** NOR Gate  
- **Number of Circuits:** 3  
- **Number of Inputs per Gate:** 3  
- **Supply Voltage (VCC):** 4.5V to 5.5V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Propagation Delay Time (tpd):** Typically 8ns at 5V  
- **Low Power Consumption:** 1.4mW per gate (typical)  
- **Output Current (High/Low):** -0.4mA / 8mA  
- **Package Type:** SOIC-14  
- **Mounting Type:** Surface Mount  

### **Descriptions:**  
- The SN74ALS27ANSR is part of the ALS (Advanced Low-Power Schottky) logic family.  
- It provides three independent 3-input NOR gates in a single IC.  
- Designed for high-speed operation with low power dissipation.  
- Suitable for industrial and commercial applications.  

### **Features:**  
- **High-Speed Operation:** Optimized for fast switching applications.  
- **Low Power Consumption:** Efficient power usage compared to standard TTL.  
- **Wide Operating Voltage Range:** Supports 4.5V to 5.5V operation.  
- **Schottky Diode Clamping:** Reduces switching noise.  
- **Balanced Propagation Delays:** Ensures consistent performance.  
- **Surface-Mount Package (SOIC-14):** Compact and suitable for PCB assembly.  

This information is sourced from Texas Instruments' official documentation.

Application Scenarios & Design Considerations

Triple 3-Input Positive NOR Gates

Alternative Part Number

  • 74ALS27AN --: Same 74ALS27 triple 3-input NOR logic function in a standard DIP package, pin-compatible with the original device's logic and electrical characteristics.
  • DM74ALS27N --: Direct functional equivalent triple 3-input NOR gate from the 74ALS family, offering similar propagation delay and drive capability.
  • SN74ALS27N --: Same TI ALS27 die in a through-hole DIP package, providing identical logic behavior when the surface-mount SOIC package of the original is not required.
  • 74ALS27N --: Equivalent 74ALS-series triple 3-input NOR gate with matching logic and supply characteristics, suitable for drop-in use in most designs.
  • SN74HC27N --: Same triple 3-input NOR function from the same vendor in a different logic family; CMOS HC version offers lower power and is pin-compatible, though timing differs.

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