IC 74147 Pin Diagram, Internal Circuit, Truth Table


IC 74147 is a digital encoder IC that encodes 9 inputs lines into 4 output lines. It is also known as the Decimal to BCD priority encoder. The priority encoder term is used because it provides encoding for highest order data lines as a first priority. It is made up using Transistor-Transistor Logic(TTL) technology. It is a 10 to 4 encoder IC.  In this article, we are going to see IC 74147 Pin Diagram, IC 74147 Internal Circuit Diagram, and IC 74147 Truth table or function table.


The general specification of this IC are,
  • It operates at 4.5V to 5.5 DC voltage.
  • It delivers output current from low 70µA to high 8mA
  • It operates at the temperature from -55℃ to 70℃
  • Logic Case packaging type: DIP
  • Mounting Type: Through Hole


IC 74147 Pin Diagram


Here, you can see the pin diagram of IC 74147

IC 74147 Pin Diagram, pin diagram of IC 74147



You can see there is a total of 16 pins.

Pin No. 1 - 4 (input)

Pin No. 2 - 5 (input)

Pin No. 3 - 6 (input)

Pin No. 4 - 7 (input)

Pin No. 5 - 8 (input)

Pin No. 6 - C (output)

Pin No. 7 - B (output)

Pin No. 8 - Ground (GND)

Pin No. 9 - A (output)

Pin No. 10 - 9 (input)

Pin No. 11 - 1 (input)

Pin No. 12 - 2 (input)

Pin No. 13 - 3 (input)

Pin No. 14 - D (output)

Pin No. 15 - Not Connected (NC)

Pin No. 16 - Vcc or positive power supply




IC 74147 Internal Circuit Diagram


Here, you can see the internal circuit diagram of IC 74147

IC 74147 internal circuit diagram, internal circuit diagram of IC 74147




IC 74147 Truth Table/Function Table


Here, you can see the truth table of IC 74147

IC 74147 Truth Table or Function Table, truth table of IC 74147



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IC 74147 Pin Diagram, Internal Circuit, Truth Table IC 74147 Pin Diagram, Internal Circuit, Truth Table Reviewed by Author on 10/14/2021 Rating: 5
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