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SN54LS173J from TI,Texas Instruments

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SN54LS173J

Manufacturer: TI

4-BIT D-TYPE REGISTER WITH 3-STATE OUTPUTS

Partnumber Manufacturer Quantity Availability
SN54LS173J TI 430 In Stock

Description and Introduction

4-BIT D-TYPE REGISTER WITH 3-STATE OUTPUTS The SN54LS173J is a 4-bit D-type register with 3-state outputs, manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Number of Bits:** 4-bit  
- **Output Type:** 3-state  
- **Operating Voltage:** 4.5V to 5.5V  
- **Operating Temperature Range:** -55°C to +125°C (Military-grade)  
- **Package Type:** Ceramic DIP (Dual In-line Package)  
- **Pin Count:** 16  
- **Propagation Delay:** Typically 15ns  
- **Current Consumption:** Low power consumption (LS series)  

### **Descriptions and Features:**  
- **4-Bit Parallel Register:** Stores 4 bits of data with synchronous loading.  
- **3-State Outputs:** Allows outputs to be disabled for bus-oriented applications.  
- **Master Reset (MR):** Asynchronous clear function to reset all outputs to low.  
- **Clock-Controlled Operation:** Data is loaded on the rising edge of the clock.  
- **Buffered Inputs and Outputs:** Provides improved noise immunity.  
- **Military-Grade Reliability:** Designed for harsh environments.  

This device is commonly used in digital systems for temporary data storage, buffering, and bus interfacing.

Application Scenarios & Design Considerations

4-BIT D-TYPE REGISTER WITH 3-STATE OUTPUTS

Alternative Part Number

  • DM74LS173N --: Same 4-bit D-type flip-flop with tri-state outputs in the LS logic family, pin-compatible DIP package, widely available as a direct functional replacement.
  • MC74LS173AN --: Equivalent 74LS173 quad D flip-flop with tri-state outputs, same pinout and logic function, suitable drop-in substitute for the military-grade part in most applications.
  • SN74LS173AN --: Commercial-temperature version of the same TI LS173 flip-flop, identical function and pinout, usable when the extended military temperature range is not required.
  • M74LS173P --: Direct LS173 equivalent 4-bit register with tri-state outputs, widely used as a drop-in replacement in 54/74LS designs.
  • HD74LS173P --: Standard 74LS173 function in a PDIP package, electrically and functionally compatible for non-military temperature applications.

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