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SN74LS393D from TI,Texas Instruments

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SN74LS393D

Manufacturer: TI, MOT

DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER

Partnumber Manufacturer Quantity Availability
SN74LS393D TI, MOT 484 In Stock

Description and Introduction

DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER The SN74LS393D is a dual 4-bit binary ripple counter manufactured by Texas Instruments (MOT stands for Motorola, but the part is from Texas Instruments).  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Number of Bits:** Dual 4-bit (two independent counters)  
- **Counting Sequence:** Binary (0 to 15)  
- **Supply Voltage Range:** 4.75V to 5.25V (nominal 5V)  
- **Operating Temperature Range:** 0°C to 70°C (commercial grade)  
- **Package Type:** SOIC-14 (D suffix)  
- **Propagation Delay:** Typically 20ns  
- **Maximum Clock Frequency:** ~35 MHz  
- **Reset Function:** Asynchronous master reset (active HIGH)  

### **Descriptions:**  
- Each counter has a separate clock input (CP) and clear input (MR).  
- The counters ripple internally, meaning the output transitions are not simultaneous.  
- Outputs are buffered for improved noise immunity.  

### **Features:**  
- **Dual 4-bit binary counters** in a single IC.  
- **Asynchronous reset** for clearing the counter.  
- **Low power consumption** (typical 32mW).  
- **TTL-compatible inputs and outputs.**  
- **Wide operating voltage range** for reliable 5V operation.  

This part is commonly used in frequency division, timing circuits, and digital counting applications.

Application Scenarios & Design Considerations

DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER

Alternative Part Number

  • MC74HC393ADG --: Dual 4-bit binary ripple counter in SOIC-14, functionally equivalent to the SN74LS393D with CMOS lower power consumption.
  • CD74HC393E --: Same dual 4-bit binary counter function from TI, HC family offers direct logic compatibility and similar pinout.
  • 74HC393D,653 --: Dual 4-bit binary ripple counter in SO14 package, pin-compatible replacement with standard HC logic levels.
  • DM74LS393N --: Same dual 4-bit binary counter function in the 74LS logic family, widely available and pin-compatible in DIP form.
  • MC74LS393N --: Direct functional equivalent dual 4-bit counter from the same logic family, suitable drop-in replacement.

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