AMI Semiconductor / ON Semiconductor
- ON Semiconductor (Nasdaq: ON) kei te akiaki i nga mahi hou o te kaha, me te whakamana i nga kaihoko ki te whakaiti i te whakamahinga o te whakamahinga o te ao. Ka whakaratohia e te kamupene he putea matawhānui o te mana kaha me te tohu tohu, ngaa whakaaroaro, ngawari, me nga ritenga tikanga hei awhina i nga kaitohu hoahoa ki te whakaoti io ratau hoahoa hoahoa ahurei i roto i te moto, te whakawhitiwhiti korero, te rorohiko, te kaihoko, te ahumahi, te rama rama, te hauora, te haurangi / te haurangi me te mana tono tono. Kei te whakahaere a Semiconductor i te raupapa whakawhiti me te kounga o te ao me te kounga, me te waahana o nga umanga mahi, nga tari hokohoko, me nga pokapū hoahoa i nga maatau matua puta noa i Amerika Te Tai Tokerau, Europe, me nga rohe o te Moana-nui-a-Kiwa.Kāwai Hua
- Nga Rohe Whakaraupapa (IC)
(27,917 products) - Interface - Pūrongo, Tae Capacitive
(16 products) - ICs motuhake
(63 products) - PMIC - Nga Kaitautoko Ngaohiko - Te Whakamahere Ma
(363 products) - PMIC - Nga Kaituku Rawa - Kaiwhakahaere Whakahaere
(10 products) - PMIC - Nga Kaituku Rawa - Raina + Whakawhiti
(40 products) - PMIC - Nga Kaitautoko Rawa - Raina
(4,686 products) - PMIC - Nga Kaituku Ngaohiko - Kaiwhakahaere Whakaw
(832 products) - PMIC - Kaiwhakahaere Ngaohiko - Mana Whakawhiti DC
(524 products) - PMIC - He Korero Korero
(333 products) - PMIC - V / F me F / V Kaitahuri
(2 products) - PMIC - Whakahaere Tohu
(136 products) - PMIC - Kaitirotiro
(1,190 products) - PMIC - Mana Whakahaere Mana, Aroturuki
(115 products) - PMIC - Mana Ki runga i nga Kaiwhakahaere Ethernet
(22 products) - PMIC - Whakahaere Mana - Tohaina
(130 products) - PMIC - Whakawhiti Tohu Power, Tae Karere
(361 products) - PMIC - PFC (Whakaaetanga Whakamori Mana)
(238 products) - Kaiwhakahaere PMIC - OR, Whakakatau Whakaaro
(8 products) - PMIC - Nga Kaikoi Mane, Nga Kaituku
(826 products) - PMIC - Maamaa, Kaihauturu Ballast
(31 products) - PMIC - Kaituku Aratai
(325 products) - PMIC - Kaituku Pane
(2 products) - PMIC - Nga Kaihautuku Hot Hot
(15 products) - PMIC - Kaituku Puta
(358 products) - PMIC - Kaihauturu, Half-Bridge
(234 products) - PMIC - Whakaaturanga Whakaatu
(216 products) - PMIC - Te Ture Whakahaere / Whakahaere
(68 products) - PMIC - Whakahaere Battery
(75 products) - PMIC - Karauna Battery
(69 products) - PMIC - Nga Kaituku AC DC, Nga Kaitawhiti Tuimotu
(968 products) - Maharahara
(886 products) - Paerewa - Nga Mahi Mahi Aunoa
(67 products) - Haumaru - Kaituku, Taumata Taumata
(490 products) - Te Aroha - Te Waea Whakanuia
(274 products) - Paerewa - Whakawhiti tohu, Multiplexers, Whakatau
(1,318 products) - Pūmahara - Nga Rehita Rehita
(287 products) - Haumaru - Nga Kaihanga Paari me nga Kaiwhai
(27 products) - Haumaru - Nga Mahawi
(86 products) - Pūmahara - Tae
(636 products) - Haumaru - Nga Tae me nga Inverters - Maha-Mahi, Ta
(362 products) - Haumaru - Nga Kii me nga Inverters
(2,616 products) - Haumaru - Poutuka Tae
(1,371 products) - Pūmahara - Pūmahara FIFOs
(5 products) - Haumaru - Kaitohutohu, Kaiwewe
(496 products) - Pūmahara - Tauira
(64 products) - Haumaru - Kaipupuri, Kaikatuhi, Kaiwhiwhi, Kaihoko
(2,226 products) - Raina - Ataata Ataata
(131 products) - Raina - Kaitohu
(197 products) - Raina - Amplifiers - Ataata Ataata me nga Modules
(26 products) - Raina - Nga Kaituku Nui - Te Raa Mahinga
(8 products) - Raina - Amplifiers - Whakangungu, OP Amps, Taura W
(712 products) - Raina - Amplifiers - Ataata
(151 products) - Atanga - Telecom
(4 products) - Atanga - Tohaina
(100 products) - Atanga - Waitohu Waitohu
(9 products) - Atanga - Waitohu Motuhake, Kaihautoro, Kaiwhanga
(17 products) - Interface - Serializers, Deserializers
(29 products) - Interface - Whakaaturanga me te Whakaaturanga Waeh
(29 products) - Interface - Modems - IC me Modules
(19 products) - Atanga - I Whakawhānui A / O
(39 products) - Atanga - Maama - Mahi
(3 products) - Interface - Whakawhitiwhiti, Whakatauranga, Kaituk
(3 products) - Atanga - Nga Kaikoi, Nga Kaiwhiwhi, Nga Kaituku
(296 products) - Atanga - Kaiwhakahaere
(19 products) - Interface - Whakawhiti Analog, Multiplexers, Demul
(699 products) - Interface - Whakawhiti Analog - Te Whakamahere Raw
(184 products) - Whakauru - Ko te Pūnaha i te Motu (SoC)
(1 products) - Te whakauru - Nga kaimono - Whakaritea Whakamaunga
(4 products) - Te whakauru - Nga kaipupuri
(115 products) - Kua whakauruhia - DSP (Nga Tukatuka Waitohu Mamati
(20 products) - Raraunga Raraunga - Ataahua ki nga Kaituku Analog
(5 products) - Raraunga Raraunga - Nga Potentiometers Mamati
(291 products) - Raraunga Raraunga - Analog ki te Kaituku Ahurangi
(1 products) - Raraunga Raraunga - ADCs / DAC - Te Whakamahere Ra
(6 products) - Te Whero / Te Timinga - Nga Timar Taputapu me nga
(174 products) - Whero / Timinga - Nga Rarangi Whakaroa
(41 products) - Te Whero / Te Timinga - Nga Kaihanga Karauna, PLLs
(568 products) - Whero / Timingi - Karaoke Karaka, Kaikoi
(384 products) - Te Whero / Te Timinga - Te Whakamahinga Taumahi
(31 products) - Te Waaatuhi Aapiri
(134 products) - Tuhinga o mua
(3,156 products) - Optoisolators - Triac, Whakaputa SCR
(566 products) - Optoisolators - Transistor, Whakaaturanga Photovol
(2,136 products) - Optoisolators - Whakaputa Pūmanawa
(343 products) - Isolators - Kaiwhakahaere Puta
(111 products) - Kaihanga / DIY, Whakaakoranga
(1 products) - Wearables
(1 products) - Ngä Mea Mana - Poari Poari
(5 products) - DC Converters
(5 products)
- Ngā Rei
(12 products) - Ngā Raraunga Ake Tae
(12 products) - Hua Rawehake Utu
(20,955 products) - Nga Kaitautoko - Te Whakamahere Rawa
(18 products) - Transistors - Unijunction Programmable
(11 products) - Transistors - JFET
(337 products) - Transistors - IGBT - Kotahi
(509 products) - Nga Transistors - IGBT - Modules
(46 products) - Nga Transistors - FET, MOSFET - Kotahi
(5,575 products) - Nga Transistors - FET, MOSFET - RF
(126 products) - Nga Transistors - FET, MOSFET - Whakaritea
(745 products) - Transistors - Bipolar (BJT) - Kotahi, Whakamahia i
(578 products) - Transistors - Bipolar (BJT) - Kotahi
(5,358 products) - Transistors - Pipuri (BJT) - RF
(191 products) - Transistors - Bipolar (BJT) - Nga Whakaritenga, Ng
(317 products) - Transistors - Bipolar (BJT) - Whakaritea
(207 products) - Thyristors - TRIACs
(91 products) - Thyristors - SCR
(84 products) - Thyristors - DIACs, SIDACs
(10 products) - Aratau Pupuri Mana
(207 products) - Diodes - Zener - Kotahi
(3,365 products) - Nga Rita - Zener - Nga Whakarite
(6 products) - Nga Rita - Te Whakaaetanga Mahinga (Varicaps, Vara
(53 products) - Nga Rita - RF
(62 products) - Nga Rita - Nga Kaihauturu - Kotahi
(2,026 products) - Nga Rita - Nga Kaihauturu - Nga Whakarite
(803 products) - Nga Pouaka - Rectifiers Bridge
(230 products) - Ngā Pūrongo, Ngā Kaitautoko
(1,089 products) - Ngā Pūrere Ataata - Ngā Taekerangi - Taeke Tae
(3 products) - He Taputapu Ataata - Whakaatu Analog me te Mamati
(131 products) - Ngā Pūrere Motuhake
(3 products) - Ngā Pūrere Whakatata
(27 products) - Pūrere Matapihi - Whakaaro - Whakaatu Analog
(15 products) - Pūrere Matapihi - Phototransistors
(65 products) - Sensors Optical - Whakaahua Whakaahua - Momo Momo
(85 products) - Pūrere Matapihi - Whakaahua Whakaahua - Momo Wahi
(10 products) - Ngā Pūrere Ataata - Waearoto
(27 products) - Pūrere Matapihi - Whakaata Ataata - Whakaputa Pūma
(14 products) - Pūrere Matapihi - Marama Hauora, IR, UV Sensors
(50 products) - Ngā Pūrere Motion - IMUs (Nga Utu Whakatau Inertia
(9 products) - Ataata Ata, Kamupene
(648 products) - Patuhi, Taumata Taumata
(2 products) - RF / IF me RFID
(238 products) - RFID Transponders, Tohu
(20 products) - Te Aromatawai a te RFID me nga Whakawhanaketanga K
(2 products) - RF Transmitters
(4 products) - RF Whakawhiti Whakawhiti
(2 products) - RF Transceiver ICs
(37 products) - Kaiwhiwhi RF
(4 products) - RF Modulators
(2 products) - RF Mixers
(1 products) - RF Misc IC me nga Modules
(99 products) - Whakatauranga RF me Nga Kiti Whakatairanga, Poari
(22 products) - Nga Raraunga RF
(3 products) - RF Demodulators
(15 products) - Rongohau Amp
(26 products) - Waea RF
(1 products) - Poari Whakawhanaketanga, Kiti, Nga Takawaenga
(1,341 products) - Pūmanawa, Ratonga
(1 products) - Nga Kaihautū, Nga Kaituku, me nga Kaihauturu
(4 products) - Te Poari Arotake - Nga Karere
(305 products) - Poari Arotake - Op Amps
(1 products) - Poari Arotake - Nga Kaituku Irirangi Raina
(122 products) - Poari Arotake - Nga Kaituku Arataki
(130 products) - Poari Arotake - Poari Whakatairanga, Nga Kaari wah
(13 products) - Kaupapa Poari - Ngaa - MCU, DSP
(3 products) - Poari Arotake - DC / DC & amp; AC / DC (Kore-Raina
(280 products) - Poari Arotake - Nga Kaituku Ataata
(37 products) - Te Poari Arotake me te Whakaaturanga me nga Kiti
(427 products) - Tuhinga
(18 products) - Optoelectronics
(1,183 products) - Aarama - Nga Pouaka Poari Kaari, Nga Whakaritea, N
(239 products) - Whakaara Ahuhu - Tohu
(547 products) - Infrared, UV, Emitters kitea
(75 products) - Whakaatuhia nga Whakawaewae - Nga Matakite Dot me
(59 products) - Whakaaturanga i nga Momo - Uara Aama me te Tau
(259 products) - Tuhinga
(4 products) - Tiaki Awhe
(1,801 products) - TVS - Thyristors
(128 products) - TVS - Hangarau Mixed
(49 products) - TVS - Diodes
(1,612 products) - Nga Pukupuku Hiko
(2 products) - Tiaki Whakawera
(10 products) - Kuki
(13 products) - Ko nga Kitihanga Whakaraupapa (IC)
(3 products) - Kiti Kongakonga Tohu
(8 products) - Ngā Kiti Tiaki Waehere - Waea TVS
(2 products) - Ngā Tātari
(219 products) - EMI / RFI Matapihi (LC, RC Networks)
(193 products) - Mahinga Ake Katoa
(26 products)
Nga korero e pä ana
- Ko James Webb Space Thelescope ka tuku i nga whakamatautau whakamutunga i mua i te tuku
2021-09-03 - Canada, Ahitereiria, Japan whakakotahi mo te Momo Mino Momo
2021-09-02 - Skywater ki Fab Hobs maramara
2021-09-01 - I pakari a Amyon 1.6kw RF Amplifiers
2021-08-31 - Ko te Elsa-D a Elsacle-D e whakaatu ana i te hopu ASTNUIC i te waahi
2021-08-31 - U.S. Ko te kaha o te waahi ka tu ki runga i te whakahau mara whakamutunga, starcom
2021-08-30 - Huringa Tiaki Diode pai mo te tuku mana-c
2021-08-27 - Ko nga kaimoana-wai-wai e pa ana ki te 60kw
2021-08-26
Rārangi Hua
- Wahanga #:
FIN1047MTC - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC DRIVER 3.3V LVDS 4BIT 16TSSOP - I roto i te Stock:
5897
- Wahanga #:
LV8011V-TLM-E - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC MOTOR DRIVER PAR 20SSOP - I roto i te Stock:
6023
- Wahanga #:
KA7631 - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC REG LINEAR 5.1V/9V/12V 10SIP - I roto i te Stock:
4046
- Wahanga #:
NTLUS4930NTAG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
MOSFET N-CH 30V 6.3A UDFN6 - I roto i te Stock:
148838
- Wahanga #:
BC846BLT1G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
TRANS NPN 65V 0.1A SOT23 - I roto i te Stock:
2500087
- Wahanga #:
4N26SM - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
OPTOISO 4.17KV TRANS W/BASE 6SMD - I roto i te Stock:
226243
- Wahanga #:
1SMC8.5AT3G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
TVS DIODE 8.5V 14.4V SMC - I roto i te Stock:
4370
- Wahanga #:
MC100E416FNR2G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC LINE RCVR QUINT DIFF 28-PLCC - I roto i te Stock:
5812
- Wahanga #:
MC10H645FN - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC CLK BUFFER 2:9 28PLCC - I roto i te Stock:
4816
- Wahanga #:
MC74HC132ADG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC GATE NAND SCHMITT 4CH 14SOIC - I roto i te Stock:
464087
- Wahanga #:
FPF2165 - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC LOAD SWITCH ADJ CURR 6-MLP - I roto i te Stock:
99939
- Wahanga #:
CAT1023WI-28-GT3 - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC SUPERVISR CPU 2K EEPROM 8SOIC - I roto i te Stock:
180572
- Wahanga #:
ASX350CS3C00SPEA0-DP - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IMAGE SENSOR VGA 1/5 SOC - I roto i te Stock:
15167
- Wahanga #:
FIN1217MTD - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC SERIALIZER/DESERIALZR 48TSSOP - I roto i te Stock:
5895
- Wahanga #:
FDD6296 - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
MOSFET N-CH 30V 15A D-PAK - I roto i te Stock:
139988
- Wahanga #:
NRVBAF360T3G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
DIODE SCHOTTKY 60V 4A SMA-FL - I roto i te Stock:
364383
- Wahanga #:
MC74ACT245NG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC TXRX NON-INVERT 5.5V 20DIP - I roto i te Stock:
4220
- Wahanga #:
BF240_D74Z - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
TRANSISTOR RF NPN 40V 50MA TO-92 - I roto i te Stock:
5636
- Wahanga #:
FQB9N50CTM - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
MOSFET N-CH 500V 9A D2PAK - I roto i te Stock:
70232
- Wahanga #:
NRTSV20H100CTG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
DIODE SCHOTTKY 100V 10A TO220 - I roto i te Stock:
110944
- Wahanga #:
MC78M09BDT - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC REG LINEAR 9V 500MA DPAK - I roto i te Stock:
6043
- Wahanga #:
BZX55C6V8_T50A - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
DIODE ZENER 6.8V 500MW DO35 - I roto i te Stock:
4181
- Wahanga #:
MPS6601RLRAG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
TRANS NPN 25V 1A TO-92 - I roto i te Stock:
4051
- Wahanga #:
1N6286ARL4 - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
TVS DIODE 36.8V 59.3V AXIAL - I roto i te Stock:
5223
- Wahanga #:
DM74ALS652WMX - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC TXRX NON-INVERT 5.5V 24SOIC - I roto i te Stock:
6012
- Wahanga #:
J107 - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
JFET N-CH 25V 625MW TO92 - I roto i te Stock:
168142
- Wahanga #:
MM3Z6V8ST1G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
DIODE ZENER 6.8V 200MW SOD323 - I roto i te Stock:
2039908
- Wahanga #:
MC14027BDG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC FF JK TYPE DUAL 1BIT 16SOIC - I roto i te Stock:
357435
- Wahanga #:
NTGD3148NT1G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
MOSFET 2N-CH 20V 3A 6TSOP - I roto i te Stock:
417211
- Wahanga #:
NGTD20T120F2SWK - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IGBT TRENCH FIELD STOP 1200V DIE - I roto i te Stock:
32860
- Wahanga #:
MC100EL38DWR2G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC CLOCK GEN ECL 2 4/6 20-SOIC - I roto i te Stock:
19936
- Wahanga #:
TL431ACLPREG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC VREF SHUNT ADJ TO92-3 - I roto i te Stock:
532866
- Wahanga #:
H11G2SD - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
OPTOISO 5.3KV DARL W/BASE 6SMD - I roto i te Stock:
5652
- Wahanga #:
NCV8114BSN180T1G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC REG LINEAR 1.8V 300MA 5TSOP - I roto i te Stock:
810956
- Wahanga #:
NCP1450ASN19T1 - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC REG CTRLR BOOST 5TSOP - I roto i te Stock:
4807
- Wahanga #:
FDPC3D5N025X9D - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
MOSFET 2 N-CH 25V 74A 12-PQFN - I roto i te Stock:
71809
- Wahanga #:
FQA13N50CF - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
MOSFET N-CH 500V 15A TO-3P - I roto i te Stock:
52084
- Wahanga #:
FODM8801AR2 - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
OPTOISO 3.75KV TRANS 4-MINI-FLAT - I roto i te Stock:
150200
- Wahanga #:
NCP1294EDBR2G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC PWM CTLR FLYBACK 16TSSOP - I roto i te Stock:
74061
- Wahanga #:
NCV8154MN330180TBG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC REG LINEAR 1.8V/3.3V 10DFN - I roto i te Stock:
195947
- Wahanga #:
CNY174M - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
OPTOISO 4.17KV TRANS W/BASE 6DIP - I roto i te Stock:
237648
- Wahanga #:
CGS3322M - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC GENERATOR CRYSTAL CLOCK 8SOIC - I roto i te Stock:
5125
- Wahanga #:
MPS8098G - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
TRANS NPN 60V 0.5A TO-92 - I roto i te Stock:
5008
- Wahanga #:
1N4005RL - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
DIODE GEN PURP 600V 1A DO41 - I roto i te Stock:
4607
- Wahanga #:
NCP135AMT040TBG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
500 MA VERY LOW DROPOUT - I roto i te Stock:
388538
- Wahanga #:
MR5410MP2 - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
LED T 3/4 GREEN DIFF RES PC MNT - I roto i te Stock:
4723
- Wahanga #:
H11G13S - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
OPTOISO 5.3KV DARL W/BASE 6SMD - I roto i te Stock:
4131
- Wahanga #:
BC327A_J35Z - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
TRANS PNP 45V 0.8A TO-92 - I roto i te Stock:
5897
- Wahanga #:
LV8121V-TLM-H - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC MOTOR DRIVER PAR/PWM 44SSOP - I roto i te Stock:
29160
- Wahanga #:
MC1489MELG - Kaihanga:
AMI Semiconductor / ON Semiconductor - Whakaahuatanga:
IC LINE RECEIVER QUAD 14-SOEIAJ - I roto i te Stock:
5494