Integrated Circuit Identification
Please select the integrated circuit information of interest:

- IC Package Identification

- IC Part Numbering Conventions

- Manufacturers Date Code

Integrated Circuit Packaging


DIP Dual Inline Package

SH-DIP Shrink DIP

SK-DIP, SL-DIP Skinny DIP, Slim DIP

SIP Single Inline Package

PGA Pin Grid Array

SOIC, SOP Small Outline Package

QFP Quad Flat Package

LCC Leadless Chip Carrier

PLCC, SOJ Plactic Leaded Chip Carrier, Small Outline J-lead Package

-IC Common Part Number Codes

Many partnumbers for ICs contain some common elements.
The examples below are for the 4xxx series of ICs. (i.e. CD74HC4000 or CD4000B)
Prefixes
CD : CMOS Digital
MM : MOS Monolithic
MN : CMOS
74 : Industrial Applications (0-70 deg C) 74xx/54xx TTL Series Pin Compatible
HC : High Speed CMOS as fast as LS TTL family (Low Power Schottky)
Suffixes
B : Buffered Output

- Manufacturer's Date Code

The manufacturer's Code is usually a four-digit number. This code is the date of the run in which a particular IC was manufactured. The first two digits represent ther year, and the last two digits represent the week. For example a code of 9504 would represent the fourth week of 1995 (the last week of January).