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SNJ54191J from TI,Texas Instruments

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SNJ54191J

Manufacturer: TI, TM

SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL
Partnumber Manufacturer Quantity Availability
SNJ54191J TI, TM 40 In Stock

Description and Introduction

SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL The **SNJ54191J** is a synchronous, reversible up/down counter manufactured by **Texas Instruments (TI)**.  

### **Key Specifications:**  
- **Logic Type:** Synchronous 4-Bit Up/Down Binary Counter  
- **Supply Voltage Range:** 4.5V to 5.5V  
- **Operating Temperature Range:** -55°C to +125°C (Military Grade)  
- **Package Type:** Ceramic DIP (Dual In-Line Package)  
- **Number of Pins:** 16  
- **Counting Modes:** Up, Down, and Hold  
- **Clock Input:** Positive Edge-Triggered  
- **Output Type:** Standard (TTL-Compatible)  

### **Features:**  
- **Synchronous Operation:** All flip-flops change state simultaneously.  
- **Parallel Load Capability:** Allows presetting the counter.  
- **Carry and Borrow Outputs:** Facilitates cascading multiple counters.  
- **Asynchronous Master Reset:** Clears all flip-flops independently of the clock.  
- **High Noise Immunity:** Designed for reliable operation in harsh environments.  

### **Applications:**  
- Military and aerospace systems  
- Industrial control systems  
- Digital counting and timing circuits  

This part is part of TI’s **54-series**, which is designed for **military-grade** applications with extended temperature and reliability requirements.  

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

Application Scenarios & Design Considerations

SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL

Alternative Part Number

  • CD4019BE --: Quad AND-OR select gate in the CD4000 series, functionally similar to the 54191 and available in a standard DIP package.
  • MC14519BCP --: Quad AND-OR select gate from the MC14500 series, a direct functional equivalent to the 54191 with a different naming prefix.
  • HEF4019BP --: Quad AND-OR select gate in the HEF4000 family, pin-compatible logic equivalent suitable as a replacement.
  • CD40193BE --: 4-bit up/down binary counter with the same function as the 54191, available in a standard DIP package and widely stocked.
  • MC14516BCP --: Presettable 4-bit up/down counter functionally equivalent to the 54191, in a DIP package suitable for direct replacement.
  • 74HC191N --: High-speed CMOS 4-bit synchronous up/down counter matching the 191 function, with lower power consumption and broad availability.

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