SN7400N - The company prefix SN indicates this is a Texas Instruments manufactured part. This can also be confirmed through the TI logo.

Manufacturer Prefix or IC Company Prefix or ID are identification codes various semiconductor companies use to identify their integrated circuits. Those IDs are usually found as the first few letters of the part number.

They may often be found on the IC package itself as well along with a possible logo.

Prefix	Company	Note
AD	Analog Devices	Analog Devices, Inc.
AK	Asahi Kasei	Asahi Kasei Corp. (Audio DAC chips)
AL	Annapurna Labs	AWS Graviton
AM	AMD	Advanced Micro Devices Inc.
AT	Atmel	Atmel Corporation
BA	ROHM Semiconductor
BCM	Broadcom	Broadcom Corp. (Avago Technologies)
BQ	Benchmarq Microelectronics
CA	RCA	Analog devices
CD	RCA	Digital devices
CN	Cavium	Cavium, Inc.
DM	Fairchild	Fairchild Semiconductor
DM	National Semiconductor
DS	Dallas Semiconductor	(now Maxim Integrated)
EP	Altera	Normal series
EPC	Altera	EPROM's
EPF	Altera	Flex series
EPM	Altera	MAX Series
HA	Hitachi	Analog devices
HD	Hitachi	Digital devices
LM	National Semiconductor
M	Mitsubishi	Mitsubishi Electric Corporation ID may be preceded by three-diamond emblem
MA, MAA, MBA	Tesla
MC	Motorola	Now ON Semi (ON Semiconductor)
MH, MHB	Tesla
MM	Monolithic Memories
MM	National Semiconductor
MT	Micron	Micron Technology Inc. (Memory)
MT	MediaTek	MediaTek Inc.
MW	Marvell	Marvell Technology Group Ltd.
N	Signetics
NE	Signetics
PC	Signetics
RC	Ratheon
RM	Ratheon
SE	Signetics
SN	Texas Instruments
TI	Texas Instruments
UA	Fairchild	Fairchild Semiconductor
μA	Fairchild	Fairchild Semiconductor
XC	Xilinx
Z	Zilog

Vendor Prefixes

abilis		Abilis Systems
abcn		Abracon Corporation
active-semi	Active-Semi International Inc.
ad		Avionic Design GmbH
adapteva	Adapteva, Inc.
adh		AD Holdings Plc.
adi		Analog Devices, Inc.
aeroflexgaisler	Aeroflex Gaisler AB
al		Annapurna Labs
allwinner	Allwinner Technology Co., Ltd.
alphascale	AlphaScale Integrated Circuits Systems, Inc.
altr		Altera Corp.
amcc		Applied Micro Circuits Corporation (APM, formally AMCC)
amd		Advanced Micro Devices (AMD), Inc.
amlogic		Amlogic, Inc.
ampire		Ampire Co., Ltd.
ams		AMS AG
amstaos		AMS-Taos Inc.
apm		Applied Micro Circuits Corporation (APM)
aptina		Aptina Imaging
arasan		Arasan Chip Systems
arm		ARM Ltd.
armadeus	ARMadeus Systems SARL
artesyn		Artesyn Embedded Technologies Inc.
asahi-kasei	Asahi Kasei Corp.
atmel		Atmel Corporation
auo		AU Optronics Corporation
avago		Avago Technologies
avia		Avia Semiconductor
avic		Shanghai AVIC Optoelectronics Co., Ltd.
axis		Axis Communications AB
bosch		Bosch Sensortec GmbH
brcm		Broadcom Corporation
buffalo		Buffalo, Inc.
calxeda		Calxeda
capella		Capella Microsystems, Inc.
cavium		Cavium, Inc.
cdns		Cadence Design Systems Inc.
chipidea	Chipidea, Inc
chipone		ChipOne
chipspark	ChipSPARK
chrp		Common Hardware Reference Platform
chunghwa	Chunghwa Picture Tubes Ltd.
cirrus		Cirrus Logic, Inc.
cloudengines	Cloud Engines, Inc.
cnm		Chips & Media, Inc.
cnxt		Conexant Systems, Inc.
cortina		Cortina Systems, Inc.
cosmic		Cosmic Circuits
crystalfontz	Crystalfontz America, Inc.
dallas		Maxim Integrated Products (formerly Dallas Semiconductor)
davicom		DAVICOM Semiconductor, Inc.
denx		Denx Software Engineering
digi		Digi International Inc.
digilent	Diglent, Inc.
dlg		Dialog Semiconductor
dlink		D-Link Corporation
dmo		Data Modul AG
ebv		EBV Elektronik
edt		Emerging Display Technologies
elan		Elan Microelectronic Corp.
emmicro		EM Microelectronic
energymicro	Silicon Laboratories (formerly Energy Micro AS)
epcos		EPCOS AG
epfl		Ecole Polytechnique Fédérale de Lausanne
epson		Seiko Epson Corp.
est		ESTeem Wireless Modems
ettus		NI Ettus Research
eukrea  	Eukréa Electromatique
everest		Everest Semiconductor Co. Ltd.
everspin	Everspin Technologies, Inc.
excito		Excito
fcs		Fairchild Semiconductor
fsl		Freescale Semiconductor
geniatech	Geniatech, Inc.
giantplus	Giantplus Technology Co., Ltd.
globalscale	Globalscale Technologies, Inc.
gmt		Global Mixed-mode Technology, Inc.
goodix		Shenzhen Huiding Technology Co., Ltd.
google		Google, Inc.
grinn		Grinn
gumstix		Gumstix, Inc.
gw		Gateworks Corporation
hannstar	HannStar Display Corporation
haoyu		Haoyu Microelectronic Co. Ltd.
himax		Himax Technologies, Inc.
hisilicon	Hisilicon Limited.
hit		Hitachi Ltd.
honeywell	Honeywell
hp		Hewlett Packard
i2se		I2SE GmbH
ibm		International Business Machines (IBM)
idt		Integrated Device Technologies, Inc.
iom		Iomega Corporation
img		Imagination Technologies Ltd.
innolux		Innolux Corporation
intel		Intel Corporation
intercontrol	Inter Control Group
isee		ISEE 2007 S.L.
isil		Intersil
karo		Ka-Ro Electronics GmbH
keymile		Keymile GmbH
lacie		LaCie
lantiq		Lantiq Semiconductor
lenovo		Lenovo Group Ltd.
lg		LG Corporation
linux		Linux-specific binding
lsi		LSI Corp. (LSI Logic)
lltc		Linear Technology Corporation
marvell		Marvell Technology Group Ltd.
maxim		Maxim Integrated Products
mediatek	MediaTek Inc.
merrii		Merrii Technology Co., Ltd.
micrel		Micrel Inc.
microchip	Microchip Technology Inc.
micron		Micron Technology Inc.
minix		MINIX Technology Ltd.
mitsubishi	Mitsubishi Electric Corporation
mosaixtech	Mosaix Technologies, Inc.
moxa		Moxa
mpl		MPL AG
mti		Imagination Technologies Ltd. (formerly MIPS Technologies Inc.)
mundoreader	Mundo Reader S.L.
murata		Murata Manufacturing Co., Ltd.
mxicy		Macronix International Co., Ltd.
national	National Semiconductor
neonode		Neonode Inc.
netgear		NETGEAR
netlogic	Broadcom Corporation (formerly NetLogic Microsystems)
newhaven	Newhaven Display International
nintendo	Nintendo
nokia		Nokia
nvidia		NVIDIA
nxp		NXP Semiconductors
onnn		ON Semiconductor Corp.
opencores	OpenCores.org
ortustech	Ortus Technology Co., Ltd.
ovti		OmniVision Technologies
panasonic	Panasonic Corporation
parade		Parade Technologies Inc.
pericom		Pericom Technology Inc.
phytec		PHYTEC Messtechnik GmbH
picochip	Picochip Ltd
plathome	Plat'Home Co., Ltd.
pixcir  	PIXCIR MICROELECTRONICS Co., Ltd.
powervr		PowerVR (deprecated, use img)
qca		Qualcomm Atheros, Inc.
qcom		Qualcomm Technologies, Inc.
qemu		QEMU, a generic and open source machine emulator and virtualizer
qnap		QNAP Systems, Inc.
radxa		Radxa
raidsonic	RaidSonic Technology GmbH
ralink		Mediatek/Ralink Technology Corp.
ramtron		Ramtron International
realtek 	Realtek Semiconductor Corp.
renesas		Renesas Electronics Corporation
ricoh		Ricoh Co. Ltd.
rockchip	Fuzhou Rockchip Electronics Co., Ltd.
samsung		Samsung Semiconductor
sandisk		Sandisk Corporation
sbs		Smart Battery System
schindler	Schindler
seagate		Seagate Technology PLC
semtech		Semtech Corporation
sil		Silicon Image
silabs		Silicon Laboratories
siliconmitus	Silicon Mitus, Inc.
simtek
sii		Seiko Instruments, Inc.
silergy		Silergy Corp.
sirf		SiRF Technology, Inc.
sitronix	Sitronix Technology Corporation
skyworks	Skyworks Solutions, Inc.
smsc		Standard Microsystems Corporation
snps		Synopsys, Inc.
solidrun	SolidRun
sony		Sony Corporation
spansion	Spansion Inc.
sprd		Spreadtrum Communications Inc.
st		STMicroelectronics
ste		ST-Ericsson
stericsson	ST-Ericsson
synology	Synology, Inc.
tbs		TBS Technologies
thine		THine Electronics, Inc.
ti		Texas Instruments
tlm		Trusted Logic Mobility
toradex		Toradex AG
toshiba		Toshiba Corporation
toumaz		Toumaz
truly		Truly Semiconductors Limited
usi		Universal Scientific Industrial Co., Ltd.
v3		V3 Semiconductor
variscite	Variscite Ltd.
via		VIA Technologies, Inc.
virtio		Virtual I/O Device Specification (developed by the OASIS consortium)
voipac		Voipac Technologies s.r.o.
winbond 	Winbond Electronics corp.
wlf		Wolfson Microelectronics
wm		Wondermedia Technologies, Inc.
x-powers	X-Powers
xes		Extreme Engineering Solutions (X-ES)
xillybus	Xillybus Ltd.
xlnx		Xilinx
zyxel		ZyXEL Communications Corp.
zarlink		Zarlink Semiconductor

Chipset Vendors

A
Actions
ADATA
Agere
AIC
Airgo Networks
Airoha
ALi
Alibaba T-Head
Alliance
Allwinner
Altima
AMD
AMIC
Amlogic
Amp'ed RF
AMPAK
Anadigics
Annapurna Labs
Apacer
Applied Micro
Aquantia
ArtInChip
Artmem
Atheros
Atmel
B
Brecis
Broadcom
C
Cavium
Celeno
CEVA
CFeon
Cirrus Logic
Conexant
Cortina
CSR
CVitek
CXMT
Cypress
D
Dynachips
E
EcoNet
Elixir
Elpida
Envara
Eorex
ESMT
Espressif
EtronTech
F
Fisilink
Foresee
Freescale
Fudan Micro
Fujitsu
G
GainSpan
GCT
GigaDevice
GlobespanVirata
GLT
GSI
H
Harris
HiSilicon
I
IC+
IDT
Ikanos
Infineon
Ingenic
Inprocomm
Intel
Intellon
Intersil
ISSI
K
KH
Kingston
Kioxia
L
Lantiq
Legerity
M
M-Systems
Macronix
Marvell
Maxim
MaxLinear
MediaTek
Metanoia
Micrel
Microchip
Micron
Microsemi
Mindspeed
Mira
Morse Micro
Mosel Vitelic
Motorcomm
Motorola
MStar
Myson Century
N
Nanoradio
Nanya
National Semiconductor
Newracom
No Wires Needed
Nordic
Nufront
Nuvoton
NXP
O
Octavo Systems
P
ParkerVision
Peraso
Philips
Phison
PieceMakers
PLX Technology
PMC-Sierra
Pointec
ProMOS
Proxim
PSC
Q
Qimonda
Qualcomm
Qualcomm Atheros
Quantenna
Quantum Effect Design
R
Radia
Ralink
Rayson
RDA
RDC
Realtek
Redpine Signals
Renesas
Resonext
RF Micro Devices
Richwave
S
Samsung
SanDisk
SiBeam
Sigma Designs
SigmaStar
Silicon Data
Silicon Image
Silicon Labs
Silicon Motion
SiS
SK hynix
Skyworks
Sonix
SophGo
SpacemiT
Spansion
SpecTek
Spreadtrum
SST
StarFive
STMicro
Storlink
Sunplus
Symbol
Synaptics
Syntek
T
Taifatech
Tensilica
Tensorcom
Texas Instruments
Toshiba
Transmeta
TrendChip
TriDuctor
U
Ubicom
Unisoc
V
Vanguard
VIA
Vitesse
VLSI
W
WavePlus
Winbond
Winner Micro
Wolfson
WonderMedia
X
XMC
Xtensa
XTX Tech
Z
Zarlink
Zbit Semi
Zentel
Zilog
ZyDAS