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M74HCT125 from STMicroelectronics,ST Microelectronics

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M74HCT125

Manufacturer: STMicroelectronics, ST

QUAD BUS BUFFERS (3-STATE)

Partnumber Manufacturer Quantity Availability
M74HCT125 STMicroelectronics, ST 1798 In Stock

Description and Introduction

QUAD BUS BUFFERS (3-STATE) The M74HCT125 is a quad buffer/line driver with 3-state outputs, manufactured by STMicroelectronics. It is part of the HCT family, which combines the high-speed performance of CMOS with the low power consumption of TTL.  

### **Specifications:**  
- **Logic Family:** HCT  
- **Number of Channels:** 4 (Quad)  
- **Supply Voltage Range:** 4.5V to 5.5V  
- **High-Level Input Voltage (VIH):** 2V (min)  
- **Low-Level Input Voltage (VIL):** 0.8V (max)  
- **High-Level Output Voltage (VOH):** 4.4V (min at IOH = -4mA)  
- **Low-Level Output Voltage (VOL):** 0.1V (max at IOL = 4mA)  
- **Propagation Delay:** 14ns (typical at VCC = 5V)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Options:** SO-14, TSSOP-14  

### **Descriptions and Features:**  
- **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 CMOS noise margin of 0.9V at VCC = 5V.  
- **Low Power Consumption:** Typical ICC of 1μA at room temperature.  
- **ESD Protection:** Exceeds 2000V per JESD22-A114.  
- **Applications:** Used in bus driving, buffering, and signal isolation in digital circuits.  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

QUAD BUS BUFFERS (3-STATE)

Alternative Part Number

  • CD74HCT125E --: Same HCT logic family quad buffer with 3-state outputs, pin-compatible DIP package and widely available.
  • SN74HCT125N --: Direct functional equivalent quad 3-state buffer in HCT family, same pinout and electrical characteristics.
  • MC74HCT125AN --: Quad 3-state buffer in HCT logic family with matching pinout and compatible drive characteristics.
  • 74HCT125N --: Same HCT logic family quad buffer function in DIP package, electrically equivalent and easy drop-in replacement.

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