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SN74247N from TI,Texas Instruments

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SN74247N

Manufacturer: TI, TEXAS

BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS

Partnumber Manufacturer Quantity Availability
SN74247N TI, TEXAS 35 In Stock

Description and Introduction

BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS The SN74247N is a BCD-to-seven-segment decoder/driver manufactured by Texas Instruments (TI). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Logic Type:** BCD-to-Seven Segment Decoder/Driver  
- **Output Type:** Active Low, Open Collector  
- **Supply Voltage (VCC):** 4.75V to 5.25V (standard 5V operation)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package Type:** PDIP (Plastic Dual In-Line Package)  
- **Pin Count:** 16  
- **Propagation Delay:** Typically 25ns (max 40ns)  
- **Current Rating (Output Sink):** 24mA per segment  

### **Descriptions:**  
- The SN74247N converts Binary-Coded Decimal (BCD) inputs into active-low outputs for driving common-anode seven-segment LED displays.  
- It includes ripple-blanking input (RBI) and ripple-blanking output (RBO) for leading/trailing zero suppression.  
- Features lamp test (LT) input to verify all segments.  

### **Features:**  
- **BCD Input:** Accepts 4-bit BCD (0000 to 1001).  
- **Open-Collector Outputs:** Allows direct drive of common-anode displays.  
- **Ripple Blanking:** Supports multi-digit display suppression.  
- **Lamp Test Capability:** Tests all segments via LT input.  
- **High Noise Immunity:** Standard TTL compatibility.  

This information is sourced from TI’s official documentation.

Application Scenarios & Design Considerations

BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS

Alternative Part Number

  • DM7447AN --: Pin-compatible BCD-to-seven-segment decoder/driver with open-collector outputs, functionally equivalent to SN74247N.
  • MC7447AP --: Second-source 7447 decoder/driver in DIP package, directly interchangeable with the SN74247N in most designs.
  • CD74HC47E --: CMOS BCD-to-seven-segment decoder/driver in DIP, lower power alternative with similar logic function and pinout.
  • CD74HCT47E --: CMOS HCT-family BCD-to-seven-segment decoder/driver in DIP, offering lower power consumption while remaining logic-compatible.

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