CMOS logic family: CD4049 package basics How many pins does the CD4049 (hex inverter/hex buffer) integrated circuit package include in standard DIP/SOIC form factor?

Introduction / Context:
The CD4049 is a widely used CMOS hex inverter/hex buffer. Knowing the pin count helps with footprint selection, socketing, wiring of power pins, and mapping of six independent inverter channels during prototyping or PCB design.

Given Data / Assumptions:

• Device: CD4049 (commonly marked CD4049UBE or 4049).
• Package style considered: standard DIP/SOIC used in education and hobby electronics.
• Function: six inverters in one IC body (hex = six).

Concept / Approach:
Hex logic devices in the 4000-series CMOS family typically come in 14-pin or 16-pin bodies. Hex inverters generally require 16 pins to provide six inputs, six outputs, and separate VDD/VSS pins while allowing sensible pin mapping around the package.

Step-by-Step Solution:
Count channels: 6 inverter stages → minimum 12 pins for 6 inputs and 6 outputs.Add power pins: +2 pins (VDD and VSS) → 14 minimum.Practical mapping and no-connects/pinout symmetry typically lead to a 16-pin body for the CD4049.Therefore, CD4049 standard pin count = 16.

Verification / Alternative check:
Device datasheets and common pinout charts list CD4049 in 16-pin DIP/SOIC/TSSOP variants. Breadboard tutorials also show 16 adjacent pins.

Why Other Options Are Wrong:
14: too few for six channels plus power with standard mapping.18 or 20: larger bodies are unnecessary for this function.

Common Pitfalls:
Confusing the 4049 with smaller quad devices (which are often 14-pin) or with larger driver families that may use more pins for enable or power distribution.

Final Answer:
16