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SN74LS193J from MOTOROLA

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SN74LS193J

Manufacturer: MOTOROLA, TI, TIX

Synchronous 4-Bit Up/Down Binary Counters With Dual Clock and Clear

Partnumber Manufacturer Quantity Availability
SN74LS193J MOTOROLA, TI, TIX 951 In Stock

Description and Introduction

Synchronous 4-Bit Up/Down Binary Counters With Dual Clock and Clear The SN74LS193J is a synchronous 4-bit up/down binary counter manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Counter Type:** Synchronous 4-bit Up/Down Binary Counter  
- **Supply Voltage (VCC):** 4.75V to 5.25V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package Type:** PDIP (Plastic Dual In-Line Package)  
- **Pin Count:** 16  
- **Counting Modes:** Up, Down  
- **Clock Inputs:** Separate Up and Down Clock Inputs (CP_UP, CP_DOWN)  
- **Asynchronous Clear (MR):** Active-High  
- **Asynchronous Parallel Load (PL):** Active-Low  
- **Outputs:** 4-bit Binary (Q0, Q1, Q2, Q3)  
- **Carry (CO) and Borrow (BO) Outputs:** For Cascading Counters  
- **Propagation Delay (Typical):** 24 ns  

### **Descriptions and Features:**  
- **Synchronous Operation:** Counts on clock edges (low-to-high transition).  
- **Dual Clock Inputs:** Separate clock inputs for up-counting (CP_UP) and down-counting (CP_DOWN).  
- **Parallel Load Capability:** Allows presetting the counter via parallel data inputs (P0-P3).  
- **Asynchronous Clear:** Resets all outputs to zero when MR (Master Reset) is high.  
- **Carry and Borrow Outputs:** Facilitates cascading multiple counters for extended counting ranges.  
- **Wide Operating Voltage:** Compatible with standard 5V TTL logic levels.  
- **Applications:** Frequency division, event counting, digital clocks, and sequential logic circuits.  

This device is part of TI’s 74LS series, known for low power consumption and compatibility with TTL logic levels.

Application Scenarios & Design Considerations

Synchronous 4-Bit Up/Down Binary Counters With Dual Clock and Clear

Alternative Part Number

  • DM74LS193N --: Same 74LS193 4-bit up/down counter function with identical pinout, from a different manufacturer and series prefix, making it a direct functional drop-in replacement.
  • CD74HC193E --: High-speed CMOS 4-bit up/down counter with the same logic function and pinout; lower power consumption than LS, suitable where speed is not critical.
  • MC74HC193N --: CMOS 4-bit up/down counter from the successor of Motorola's logic line, same function and pinout, offering a modern low-power alternative to the original LS device.
  • 74HCT193N --: HCT family provides TTL-compatible input thresholds matching LS logic levels, same counter function and DIP-16 pinout, suitable drop-in replacement.
  • 74LS193PC --: Same 74LS193 4-bit up/down counter function in a DIP package, widely available and pin-compatible with the original.
  • MC74LS193N --: Second-source 74LS193 counter in a plastic DIP, electrically equivalent and a common drop-in replacement.

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