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M74HC251M1R from ST,ST Microelectronics

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M74HC251M1R

Manufacturer: ST

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Partnumber Manufacturer Quantity Availability
M74HC251M1R ST 281 In Stock

Description and Introduction

8 BIT SIPO SHIFT REGISTER The M74HC251M1R is a high-speed CMOS 8-input multiplexer with 3-state outputs, manufactured by STMicroelectronics.  

### **Specifications:**  
- **Logic Family:** HC  
- **Supply Voltage Range:** 2V to 6V  
- **High Noise Immunity:** CMOS technology  
- **Low Power Consumption:** Typically 4µA at 5V  
- **High-Speed Operation:** tPD = 14ns (typ.) at 5V  
- **3-State Outputs:** Allows bus-oriented applications  
- **Wide Operating Temperature Range:** -40°C to +125°C  
- **Package:** SO-16  

### **Descriptions:**  
The M74HC251M1R is an 8-channel digital multiplexer that selects one of eight data inputs (D0-D7) based on three select inputs (S0, S1, S2). It features an output enable (OE) pin for 3-state control, allowing the outputs to be disabled for bus sharing.  

### **Features:**  
- **8-to-1 Multiplexer Functionality**  
- **Common Select Inputs (S0, S1, S2)**  
- **3-State Output for Bus Interface**  
- **Balanced Propagation Delays**  
- **Compatible with TTL Inputs**  
- **ESD Protection:** HBM > 2000V, MM > 200V  
- **Latch-Up Performance Exceeds 100mA**  

This device is commonly used in data routing, signal selection, and bus-oriented systems.

Application Scenarios & Design Considerations

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