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SNJ54LS390J from TI,Texas Instruments

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SNJ54LS390J

Manufacturer: TI

Dual 4-Bit Decade And Binary Counters
Partnumber Manufacturer Quantity Availability
SNJ54LS390J TI 120 In Stock

Description and Introduction

Dual 4-Bit Decade And Binary Counters The **SNJ54LS390J** is a dual 4-bit decade ripple counter manufactured by **Texas Instruments (TI)**.  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Function:** Dual 4-bit decade ripple counter  
- **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)  
- **Number of Pins:** 16  
- **Counting Sequence:** Decade (0-9)  
- **Clock Input:** Negative-edge triggered  
- **Output Type:** Standard (TTL-compatible)  
- **Propagation Delay:** Typically 30ns  

### **Descriptions:**  
- Contains two independent 4-bit decade counters.  
- Each counter can be used as a divide-by-2 and divide-by-5 counter.  
- Features separate clock inputs for each counter.  
- Designed for high-speed operation with low power consumption.  

### **Features:**  
- **Dual Counter Design:** Two independent counters in a single package.  
- **Wide Operating Voltage:** Supports standard TTL levels.  
- **High-Speed Operation:** Suitable for timing and frequency division applications.  
- **Military-Grade Reliability:** Designed for harsh environments.  
- **Schottky-Clamped:** Ensures fast switching and noise immunity.  

This part is typically used in military and aerospace applications due to its ruggedized ceramic package and extended temperature range.

Application Scenarios & Design Considerations

Dual 4-Bit Decade And Binary Counters

Alternative Part Number

  • CD74HC390E --: Dual decade ripple counter in the same function class, CMOS logic, widely available and pin-compatible in function for many LS390 applications.
  • MC14518BCP --: Dual BCD up-counter with similar counting function, common 4000-series CMOS alternative often used where LS390 is specified.
  • 74HC390N --: Dual decade counter with equivalent logic function, high-speed CMOS, suitable drop-in functional replacement in most designs.
  • 74LS390 --: Same dual decade counter function in the commercial temperature range, widely available and pin-compatible in DIP packages.
  • MC74LS390N --: Second-source dual 4-bit decade counter with identical LS390 logic function and pinout, suitable drop-in replacement.
  • SN74LS390N --: Commercial-grade version of the same LS390 dual decade counter, electrically equivalent except for temperature rating.

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