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SN74LS74AJ from TI,Texas Instruments

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SN74LS74AJ

Manufacturer: TI, MOTOROLA

Dual D-type pos.-edge-triggered flip-flops with preset and clear

Partnumber Manufacturer Quantity Availability
SN74LS74AJ TI, MOTOROLA 98 In Stock

Description and Introduction

Dual D-type pos.-edge-triggered flip-flops with preset and clear The SN74LS74AJ is a dual D-type positive-edge-triggered flip-flop manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Number of Circuits:** 2  
- **Flip-Flop Type:** D-Type  
- **Trigger Type:** Positive Edge  
- **Supply Voltage Range:** 4.75V to 5.25V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Propagation Delay Time:** 20 ns (typical)  
- **Output Current:** ±8 mA (High/Low)  
- **Package Type:** 14-CDIP (Ceramic Dual In-Line Package)  
- **Mounting Type:** Through Hole  

### **Descriptions:**  
- The SN74LS74AJ features two independent D-type flip-flops with individual clear (CLR) and preset (PRE) inputs.  
- Each flip-flop has a data (D) input, clock (CLK) input, and complementary outputs (Q and Q̅).  
- The device is designed for high-speed, low-power operation in digital logic applications.  

### **Features:**  
- **Dual Flip-Flop Configuration:** Two independent flip-flops in a single package.  
- **Edge-Triggered Clocking:** Responds to the positive-going edge of the clock signal.  
- **Asynchronous Clear and Preset:** Directly sets or resets outputs regardless of clock state.  
- **Wide Operating Voltage Range:** Compatible with standard 5V TTL logic levels.  
- **Low Power Consumption:** Typical power dissipation of 20 mW per flip-flop.  
- **High Noise Immunity:** Schottky-clamped inputs for improved noise rejection.  

This information is based solely on the technical specifications and features provided in the manufacturer's datasheet.

Application Scenarios & Design Considerations

Dual D-type pos.-edge-triggered flip-flops with preset and clear

Alternative Part Number

  • DM74LS74AN --: Same 74LS74 dual D flip-flop function in a DIP-14 package with identical pinout and TTL logic levels, a direct drop-in replacement.
  • MC74LS74AN --: Equivalent 74LS74 dual D-type flip-flop in DIP-14, same pin configuration and electrical characteristics, widely available as a second source.
  • SN74HC74N --: CMOS HC-series dual D flip-flop with the same DIP-14 pinout and function; usable if slightly different speed and drive characteristics are acceptable.
  • SN74LS74AN --: Industry-standard 74LS74 dual D flip-flop in DIP-14, fully interchangeable in function and pinout with the original part.

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