Practical Electronics/IC/4049

4049
IC Family CMOS
Function Family Logic
Description Hex 1-Input NOT Gate
Pins 16
Pinout
4049 Pinout.svg
Functional Diagram
4049 Functional Diagram.svg
Basic TTL Counterpart 7400
Truth Table (One Gate)
A B   Q
0 0   {{{q00}}}
0 1   {{{q01}}}
1 0   {{{q10}}}
1 1   {{{q11}}}

The 4049 is a member of the 4000 Series CMOS range, and contains six independent NOT gates, each with two inputs. The pinout diagram, given on the right, is the standard two-input CMOS logic gate IC layout:

  • Pin 1 is the positive power supply
  • Pin 8 is the ground
  • Pins 3, 5, 7, 9, 11 and 14 are gate inputs
  • Pins 2, 4, 6, 10, 12, 14 and 15 are gate outputs