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M74HC109M1R from STM,ST Microelectronics

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M74HC109M1R

Manufacturer: STM, ST

DUAL J-K FLIP FLOP WITH PRESET AND CLEAR

Partnumber Manufacturer Quantity Availability
M74HC109M1R STM, ST 4051 In Stock

Description and Introduction

DUAL J-K FLIP FLOP WITH PRESET AND CLEAR The M74HC109M1R is a dual J-K positive edge-triggered flip-flop with set and reset, manufactured by STMicroelectronics.  

### **Specifications:**  
- **Logic Family:** HC (High-Speed CMOS)  
- **Technology:** CMOS  
- **Supply Voltage Range:** 2V to 6V  
- **High-Level Input Voltage (VIH):** 3.15V (at VCC = 4.5V)  
- **Low-Level Input Voltage (VIL):** 1.35V (at VCC = 4.5V)  
- **High-Level Output Current (IOH):** -5.2mA  
- **Low-Level Output Current (IOL):** 5.2mA  
- **Propagation Delay (tPD):** 17ns (typical at VCC = 4.5V)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SO-16  

### **Descriptions:**  
- The M74HC109M1R contains two independent J-K flip-flops with individual J, K, clock (CP), set (SD), and reset (RD) inputs.  
- Each flip-flop toggles or holds state based on J and K inputs at the positive clock edge.  
- Asynchronous set (SD) and reset (RD) override clock and data inputs.  

### **Features:**  
- **Dual Flip-Flop:** Two independent J-K flip-flops in one package.  
- **Edge-Triggered:** Positive-edge clocking for synchronous operation.  
- **Asynchronous Controls:** Direct set (SD) and reset (RD) for immediate state changes.  
- **Wide Voltage Range:** Operates from 2V to 6V.  
- **High Noise Immunity:** CMOS technology ensures robust performance.  
- **Low Power Consumption:** Suitable for battery-powered applications.  
- **Compatible with TTL Levels:** Can interface with TTL logic families.  

This information is based on the manufacturer's datasheet. For detailed electrical characteristics and timing diagrams, refer to the official STMicroelectronics documentation.

Application Scenarios & Design Considerations

DUAL J-K FLIP FLOP WITH PRESET AND CLEAR

Alternative Part Number

  • CD74HC109M --: Same 74HC109 dual J-K flip-flop function with identical HC logic family and pinout, widely available from TI as a direct functional replacement.
  • MC74HC109AD --: Dual J-K flip-flop in the 74HC series with matching logic characteristics and pin configuration, suitable drop-in alternative.
  • SN74HC109N --: Equivalent 74HC109 dual J-K flip-flop from TI; note package may differ (DIP vs SOIC), verify footprint before use.

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