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M74HCT126M1R from ST,ST Microelectronics

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M74HCT126M1R

Manufacturer: ST

OCTAL BUS BUFFER (3-STATE)

Partnumber Manufacturer Quantity Availability
M74HCT126M1R ST 4237 In Stock

Description and Introduction

OCTAL BUS BUFFER (3-STATE) The M74HCT126M1R is a quad buffer/line driver with 3-state outputs, manufactured by STMicroelectronics (ST).  

### **Specifications:**  
- **Logic Family:** HCT (High-Speed CMOS, TTL compatible)  
- **Number of Channels:** 4  
- **Output Type:** 3-State  
- **Supply Voltage Range:** 4.5V to 5.5V  
- **High-Level Input Voltage (Min):** 2V  
- **Low-Level Input Voltage (Max):** 0.8V  
- **Operating Temperature Range:** -55°C to +125°C  
- **Package:** SO-14  

### **Descriptions and Features:**  
- **Quad Buffer/Line Driver:** Contains four independent buffers with 3-state outputs.  
- **3-State Outputs:** Allows multiple devices to share a common bus without interference.  
- **TTL-Compatible Inputs:** Ensures compatibility with TTL logic levels.  
- **High Noise Immunity:** Typical of CMOS technology.  
- **Low Power Consumption:** Optimized for power-sensitive applications.  
- **Wide Operating Voltage Range:** Supports standard 5V logic systems.  

This device is commonly used in digital systems for signal buffering, bus driving, and interfacing between different logic levels.

Application Scenarios & Design Considerations

OCTAL BUS BUFFER (3-STATE)

Alternative Part Number

  • 74HCT126D --: Same 74HCT126 quad buffer with 3-state outputs in SOIC package, direct functional and pin-compatible replacement from a major logic vendor.
  • CD74HCT126M --: HCT-family quad bus buffer gate with 3-state outputs, same logic function and SOIC footprint, widely available and pin-compatible.
  • MC74HCT126ADR2G --: Equivalent 74HCT126 quad 3-state buffer in SOIC, same HCT logic family and pinout, suitable drop-in alternative.

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