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Future Electronics Egypt

74HC139  (Dual 2 to 4 Line Decoder)

74HC139 (Dual 2 to 4 Line Decoder)

LE 5.00


 74HC139 IS A dual 2 to 4 line decoder/demultiplexer IC

Specification



  • Propagation Delay Time: 145 ns at 2V / 25 ns at 6V
  • Power Dissipation: 320 mW            
  • Output Current: 5.2 mA at  6 V 
  • No. of Inputs: 3X 3 
  • No. of Pins: 16
  • Operating Temperature Range: -40°C to +125°C
  • Supply Voltage Range: 2V to 6V
  • Package: DIP-16
                                                                                                                  Logic diagram
Logic Diagram

 

Symbol Pin             Description  
1E, 2E  1, 15 enable input (active LOW)
1A0, 1A1 2,3 address input
1Y0, 1Y1, 1Y2, 1Y3 4,5,6,7  output (active LOW) 
GND 8 ground (0 V)
2Y0, 2Y1, 2Y2, 2Y3 12,11,10,9 output (active LOW)
2A0, 2A1 14,13 address input 
VCC 16 positive supply voltage
 

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