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SN54LS47J from TEXAS

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SN54LS47J

Manufacturer: TEXAS, TI, TM

BCD TO 7-SEGMENT DECODER/DRIVER
Partnumber Manufacturer Quantity Availability
SN54LS47J TEXAS, TI, TM 727 In Stock

Description and Introduction

BCD TO 7-SEGMENT DECODER/DRIVER The SN54LS47J is a BCD-to-7-segment decoder/driver manufactured by Texas Instruments.  

### **Specifications:**  
- **Logic Type**: BCD-to-7-Segment Decoder/Driver  
- **Output Type**: Open-Collector  
- **Supply Voltage (VCC)**: 4.5V to 5.5V  
- **Operating Temperature Range**: -55°C to +125°C  
- **Package**: Ceramic DIP (Dual In-Line Package)  
- **Number of Pins**: 16  
- **Propagation Delay**: Typically 30ns  
- **Current Rating (Output)**: 24mA (sink capability)  

### **Descriptions:**  
- Converts 4-bit Binary Coded Decimal (BCD) input to active-low outputs for driving common-anode 7-segment LED displays.  
- Includes lamp test and blanking functions.  
- Designed for high-speed operation in industrial and military applications.  

### **Features:**  
- **Open-Collector Outputs**: Can drive common-anode displays directly.  
- **Lamp Test Input**: Allows testing of all segments.  
- **Ripple Blanking Input/Output**: Used for blanking leading/trailing zeros.  
- **High Noise Immunity**: Typical of LS-TTL technology.  
- **Wide Operating Temperature Range**: Suitable for harsh environments.  

This part is part of Texas Instruments' SN54LS series, known for reliability in military and aerospace applications.

Application Scenarios & Design Considerations

BCD TO 7-SEGMENT DECODER/DRIVER

Alternative Part Number

  • DM7447AN --: Pin-compatible BCD-to-seven-segment decoder/driver with open-collector outputs, functionally equivalent to the SN54LS47 and widely available in DIP.
  • MC74LS47N --: Direct LS-family equivalent BCD-to-seven-segment decoder/driver with active-low outputs, same logic function and pinout.
  • CD74HC47E --: CMOS BCD-to-seven-segment decoder/driver offering similar function with lower power consumption, usable as a modern substitute where speed is not critical.
  • MC7447AP --: Pin-compatible BCD-to-seven-segment decoder/driver with active-low outputs, a common second-source replacement for the 7447 function.
  • CD74HC4543E --: CMOS BCD-to-seven-segment latch/decoder/driver offering similar display-driving function with lower power consumption, suitable when logic-family differences are acceptable.
  • DM74LS47N --: Same LS47 BCD-to-seven-segment decoder function in a DIP package; widely available and pin-compatible for most through-hole designs.

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