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Pin Layouts for commonly used ICs

Introduction

pin 1This page shows the pin layouts of the various ICs used on the website. I only use 4000 series CMOS ICs at the moment and so these are the ones that are listed. However, there are 7400 series equivalents for every IC listed and a really good reference book is the CMOS Cookbook.

CAUTION: The 4000 series ICs are based on MOSFET technology which makes them very sensitive to static. Handle the ICs carefully!

The number 1 pin is identified by either a dot placed near the pin or by a semi-circular cut out at one end of the chip as shown.

Combinational Logic

4001 Quad 2 input NOR gate

4001


4011 Quad 2 input NAND gate

4011


4069 Hex NOT gate

4069


4071 Quad 2 input OR gate

4071


4081 Quad 2 input AND gate

4081


Synchronous Logic

4013 Dual D-type flip-flop

4013


4017 Decade counter (÷10 counter)

4017


4026 Decade counter (÷10 counter) with 7-segment driver

4026


4043 Quad RS (NOR Logic) Bistable with common enable

4043


4510 Divide by 10 BCD Up-Down Counter

4510


Other Useful ICs

555 Timer

555


741 Operational Amplifier

741