Description of IC Company Prefixes

AD Analog Devices AM Advanced Micro Devices AT Atmel bq Benchmarq CA RCA (analog) CD RCA (digital) CLC Comlinear Corp. CS Crystal Semiconductor CS Cherry Semiconductor CY Cypress Semiconductor DG Siliconix DS Dallas Semiconductor DM National Semiconductor (digital) EDI Electronic Designs Inc, EDI EL Elantec EP Altera (Classic series) EPC Altera (EPROM) EPF Altera (Flex series) EPM Altera (MAX series) GM Goldstar HA Hitachi (analog) HAT Hitachi HD Hitachi (digital) HI Harris HM Harris Microwave HM Hitachi HY Hyundai HYB Siemens IDT Integrated Devices Technology, IDT IRF International Rectifier IP Integrated Power IT Micron HI Intersil [Harris] LGS Goldstar LM National M Mitsubishi MACH Vantis (MACH, PLD) MAX Maxim MB Fujitsu MC Motorola MN Micro Networks MT Micron Technology NDS National Semiconductor NE Signetics NEC NEC OKI Oki Data MC ON Semiconductor [Motorola] PI Pericom PM PMI "Analog Devices" PWM Siliconix QL Quick Logic QSI Quality Semiconductor SA Signetics SD SGS Thomson SE Signetics SEC Samsung Electronics SG Silcon General SI Siliconix SN Texas Instruments, TI (Standard) SNJ Texas Instruments, TI (MIL/QML Qualified) SPT Signal Processing Technologies, SPT SSD Samsung Electronics SU Signetics SY Synergy Semiconductor TA Toshiba TC Toshiba TD Pro-Electronics TL Texas Instruments (analog, Linear) TMS Texas Instruments X Xicor XC Xilinx XR Exar Corp. uA Fairchild UC Unitrode integrated circuits Z Zilog ZD Zeltex

This is a list of company letter prefixes for Integrated Circuit manufacturers. Normally these prefixes are used as the first part of the part number for a device.
For example, a Texas Instrument [TI] glue logic device may have a part number of SN74xx00. The 'SN' indicates that TI manufactured the device.
So by knowing the prefix you can tell which manufacturer produced the IC.

Some of the companies listed may have been sold to other manufacturers. Use the Alphabetic Listing of Manufacturers to see the complete list.
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How to determine which company produces an IC based on the text printed on the Integrated Circuit.


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