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SN74LS393 from TI,Texas Instruments

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SN74LS393

Manufacturer: TI

Dual 4-Bit Binary Counters

Partnumber Manufacturer Quantity Availability
SN74LS393 TI 69 In Stock

Description and Introduction

Dual 4-Bit Binary Counters The SN74LS393 is a dual 4-bit binary ripple counter manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Number of Counters:** Dual (2 independent 4-bit counters)  
- **Counting Mode:** Asynchronous (ripple)  
- **Clock Input:** Negative-edge triggered  
- **Reset Function:** Asynchronous master reset (active HIGH)  
- **Supply Voltage (VCC):** 4.75V to 5.25V (nominal 5V)  
- **Power Consumption:** Low power (typical 10mW per counter)  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package Options:** DIP (Dual In-line Package), SOIC (Small Outline IC)  

### **Descriptions:**  
The SN74LS393 consists of two independent 4-bit binary counters with separate clock and reset inputs. Each counter advances on the high-to-low transition of the clock signal. The counters can be cleared asynchronously via the master reset (MR) input.  

### **Features:**  
- **Dual 4-bit counters** in a single IC  
- **Asynchronous reset** for immediate clearing  
- **Wide operating voltage range** (4.75V to 5.25V)  
- **TTL-compatible inputs and outputs**  
- **High noise immunity** typical of LS family  
- **Available in multiple package types**  

This information is based on the official Texas Instruments datasheet for the SN74LS393.

Application Scenarios & Design Considerations

Dual 4-Bit Binary Counters
Partnumber Manufacturer Quantity Availability
SN74LS393 643 In Stock

Description and Introduction

Dual 4-Bit Binary Counters The SN74LS393 is a dual 4-bit binary ripple counter manufactured by Texas Instruments.  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Number of Counters:** Dual (two independent 4-bit counters)  
- **Counting Mode:** Binary (0-15 per counter)  
- **Clock Input:** Negative-edge triggered  
- **Reset Function:** Asynchronous master reset (active HIGH)  
- **Supply Voltage (Vcc):** 4.75V to 5.25V (nominal 5V)  
- **Power Consumption:** Low power dissipation (typical 30mW per counter)  
- **Operating Temperature Range:** 0°C to 70°C (commercial grade)  
- **Package Options:** DIP (Dual In-line Package), SOIC (Small Outline IC)  

### **Descriptions:**  
- Each counter has a separate clock (CP) and clear (MR) input.  
- The outputs (Q0-Q3) represent the binary count.  
- Cascadable for higher bit counts (e.g., 8-bit, 12-bit, etc.).  

### **Features:**  
- **High-Speed Operation:** Typical propagation delay of 15ns.  
- **Asynchronous Clear:** Allows immediate reset of the count.  
- **Wide Operating Voltage:** Compatible with standard TTL logic levels.  
- **Buffered Outputs:** Improved noise immunity.  
- **Common Applications:** Frequency division, event counting, timing circuits.  

Would you like additional details on pin configuration or timing diagrams?

Application Scenarios & Design Considerations

Dual 4-Bit Binary Counters

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