Home Back

Pin Layouts for commonly used ICs


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

40014001 Quad 2 input NOR gate.

40114011 Quad 2 input NAND gate.

40694069 Hex NOT gate.

40714071 Quad 2 input OR gate.

40814081 Quad 2 input AND gate.

Synchronous Logic

40134013 Dual D-type flip-flop.

40174017 Decade counter (÷10 counter).

40434043 Quad RS (NOR Logic) Bistable with common enable.