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DM74LS73AN from NS,National Semiconductor

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DM74LS73AN

Manufacturer: NS

Dual Negative-Edge-Triggered Master-Slave J-K Flip-Flops with Clear and Complementary Outputs

Partnumber Manufacturer Quantity Availability
DM74LS73AN NS 700 In Stock

Description and Introduction

Dual Negative-Edge-Triggered Master-Slave J-K Flip-Flops with Clear and Complementary Outputs The DM74LS73AN is a dual negative-edge-triggered J-K flip-flop with clear, manufactured by National Semiconductor (NS). Here are its key specifications:

1. **Logic Family**: 74LS (Low-power Schottky)  
2. **Function**: Dual J-K Flip-Flop  
3. **Trigger Type**: Negative-edge-triggered  
4. **Clear Function**: Asynchronous clear (active LOW)  
5. **Supply Voltage (VCC)**: 4.75V to 5.25V (nominal 5V)  
6. **High-Level Input Voltage (VIH)**: Min 2V  
7. **Low-Level Input Voltage (VIL)**: Max 0.8V  
8. **High-Level Output Voltage (VOH)**: Min 2.7V (at IOH = -0.4mA)  
9. **Low-Level Output Voltage (VOL)**: Max 0.5V (at IOL = 8mA)  
10. **Propagation Delay (tPLH/tPHL)**: Typical 20ns (CL = 15pF, RL = 2kΩ)  
11. **Maximum Clock Frequency**: Typically 30MHz  
12. **Power Dissipation**: 20mW per flip-flop (typical)  
13. **Operating Temperature Range**: 0°C to +70°C  
14. **Package**: 14-pin DIP (Dual In-line Package)  

These specifications are based on the manufacturer's datasheet. For detailed performance characteristics, refer to the official documentation.

Partnumber Manufacturer Quantity Availability
DM74LS73AN FAIRCHILD 1000 In Stock

Description and Introduction

Dual Negative-Edge-Triggered Master-Slave J-K Flip-Flops with Clear and Complementary Outputs The DM74LS73AN is a dual negative-edge-triggered J-K flip-flop with clear, manufactured by Fairchild Semiconductor.  

### Key Specifications:  
- **Logic Family**: 74LS  
- **Function**: Dual J-K Flip-Flop with Clear  
- **Trigger Type**: Negative Edge-Triggered  
- **Number of Circuits**: 2  
- **Number of Pins**: 14  
- **Supply Voltage (VCC)**: 4.75V to 5.25V (nominal 5V)  
- **Propagation Delay (tPLH/tPHL)**: Typically 20ns  
- **Operating Temperature Range**: 0°C to +70°C  
- **Package**: 14-Pin PDIP (Plastic Dual In-Line Package)  
- **Output Type**: Standard (TTL compatible)  
- **Clear Function**: Asynchronous active-low clear (CLR)  

### Truth Table (per flip-flop):  
| CLR | CLK | J | K | Q | Q̅ |  
|-----|-----|---|---|---|----|  
| L   | X   | X | X | L | H  |  
| H   | ↓   | L | L | Q₀ | Q̅₀ |  
| H   | ↓   | H | L | H | L  |  
| H   | ↓   | L | H | L | H  |  
| H   | ↓   | H | H | Toggle |  

(Where: L = Low, H = High, X = Don’t Care, ↓ = High-to-Low clock transition, Q₀/Q̅₀ = Previous state)  

This information is derived from Fairchild's datasheet for the DM74LS73AN.

Partnumber Manufacturer Quantity Availability
DM74LS73AN NSC 356 In Stock

Description and Introduction

Dual Negative-Edge-Triggered Master-Slave J-K Flip-Flops with Clear and Complementary Outputs The DM74LS73AN is a dual negative-edge-triggered J-K flip-flop with clear, manufactured by National Semiconductor (NSC).  

### Key Specifications:  
- **Logic Family**: 74LS  
- **Function**: Dual J-K Flip-Flop  
- **Trigger Type**: Negative-edge-triggered  
- **Clear Function**: Asynchronous active-low clear (CLR)  
- **Supply Voltage (VCC)**: 4.75V to 5.25V (nominal 5V)  
- **Power Dissipation**: Typically 20mW per flip-flop  
- **Propagation Delay**: 20ns (max) from clock to output  
- **Operating Temperature Range**: 0°C to +70°C  
- **Package**: 14-pin DIP (Dual In-line Package)  
- **Output Type**: TTL-compatible  

### Pin Configuration (Simplified):  
- **Pins 1, 13**: CLR (Clear, active low)  
- **Pins 2, 12**: Clock (CLK) inputs  
- **Pins 3, 11**: J inputs  
- **Pins 4, 10**: K inputs  
- **Pins 5, 9**: Q outputs  
- **Pins 6, 8**: Q̅ (complementary outputs)  
- **Pin 7**: Ground (GND)  
- **Pin 14**: VCC (+5V supply)  

For detailed electrical characteristics, refer to the original NSC datasheet.

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