Call us: +86 0755-82563503

Currency: $ US Dollar

Items : %s%s

Integrated Circuits (ICs)

Integrated Circuits (ICs)


Integrated circuits, often referred to as ICs or microchips, are miniature electronic circuits that contain thousands to billions of transistors, resistors, capacitors, and other electronic components on a small semiconductor material. ICs are the building blocks of modern electronics and are used in a vast array of devices and systems, ranging from smartphones and computers to automotive electronics and medical devices. They provide compactness, high functionality, and improved performance by integrating multiple electronic functions onto a single chip.

Compare Image Name Manufacturer Pricing(USD) Quantity Weight(Kg) Size(LxWxH) Datasheet Factory Lead Time Lifecycle Status Mount Packaging Published Series Pbfree Code Part Status Moisture Sensitivity Level (MSL) Number of Terminations Number of Positions ECCN Code Max Operating Temperature Min Operating Temperature Operating Supply Voltage Number of Ports Length RoHS Status Lead Free Current Rating Radiation Hardening Number of Pins Additional Feature Package / Case Interface Max Supply Voltage REACH SVHC Reach Compliance Code Min Supply Voltage Number of Receivers Frequency Height Width Resistance Mounting Type Weight Operating Temperature Technology Operating Supply Current Max Supply Current Input Type Bandwidth Height Seated (Max) HTS Code Number of Functions Nominal Supply Current Type Max Input Voltage JESD-609 Code Terminal Finish Terminal Position Terminal Form Peak Reflow Temperature (Cel) Supply Voltage Time@Peak Reflow Temperature-Max (s) Base Part Number Pin Count Output Type Temperature Grade Surface Mount Terminal Pitch JESD-30 Code Supply Voltage-Min (Vsup) Operating Temperature (Max) Number of Channels Subcategory Qualification Status Power Supplies Supply Voltage-Max (Vsup) Max Power Dissipation Output Voltage Number of Elements Configuration Number of Outputs Output Current Feature Current - Output 1 Max Output Current Max Input Current Input Voltage-Nom Analog IC - Other Type Tolerance Output Polarity Switch Type Number of Circuits Input Offset Voltage (Vos) Input Bias Current Response Time Temperature Coefficient Data Rate Receiver Hysteresis Simplex/Duplex Applications Min Input Voltage Power Dissipation Output Supply Current-Max (Isup) Propagation Delay Interface IC Type Driver Number of Bits Watchdog Timer Number of Voltages Monitored Adjustable Threshold Min Reset Threshold Voltage Max Reset Threshold Voltage Undervoltage Threshold Overvoltage Threshold Supplier Device Package Input Natural Thermal Resistance Output Characteristics Quiescent Current Common Mode Rejection Ratio Logic Function Low Level Output Current Independent Circuits Rise Time Fall Time (Typ) Frequency (Max) Voltage - Threshold Accuracy Number of Segments Output Configuration Channel Type Control Mode Screening Level Switching Frequency Input Voltage (Min) Input Voltage (Max) Memory Size Memory Type Resolution Function Number of Bits Number of I/O Supply Current-Max Differential Output Telecom IC Type Supply Type Reset Voltage - Supply Display Type Hysteresis Fault Protection Circuit Protocol Number of Analog In Channels Output Bit Code Power Supply Rejection Ratio (PSRR) Control Technique Converter Type Supply Voltage Limit-Max Topology Output Peak Current Limit-Nom Multiplexed Display Capability Input Characteristics Interface Standard Receiver Number of Bits Transmit Delay-Max Receive Delay-Max fmax-Min Max Duty Cycle Output Signal Input Signal Voltage - Supply, Single/Dual (±) Voltage - Input Offset (Max) Current - Input Bias (Max) Current - Output (Typ) Current - Quiescent (Max) CMRR, PSRR (Typ) Propagation Delay (Max) Number of Gates Display Mode Voltage Supply Source Translator Type Channels per Circuit Programmable Type Voltage - Supply (Vcc/Vdd) Control Features Frequency - Switching Digits or Characters Number of Digits/Characters Voltage - Load Rds On (Typ) Synchronous Rectifier High Side Driver Rise / Fall Time (Typ) Driven Configuration Gate Type Current - Peak Output (Source, Sink) Logic Voltage - VIL, VIH Current - Output (Max) Ratio - Input:Output Reset Timeout Voltage - Output 2 w/Sequencer Voltage/Current - Output 1 Voltage/Current - Output 2 w/LED Driver Taper Main Purpose PLL Total Resistance Differential - Input:Output Number of Taps Resistance - Wiper (Ω) (Typ) Resistor Terminal Voltage-Max Temperature Coefficient (Typ) Number of Logic Elements/Cells Number of Drivers/Receivers Duplex Output Phases Duty Cycle (Max) Clock Sync Reset Delay Time
MIC2561-1BM-TR MIC2561-1BM-TR Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tape & Reel (TR) 2005 Discontinued 1 (Unlimited) Non-RoHS Compliant 14-SOIC (0.154, 3.90mm Width) Logic Surface Mount 0°C~70°C TA Non-Inverting MIC2561 N-Channel 2 Status Flag PCMCIA Switch 14-SOIC Low Side Current Limiting (Fixed), Over Temperature Not Required 3.3V 5V 12V 550mOhm 200mA 3:2
ZL50050GAG2 ZL50050GAG2 Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tray Obsolete 3 (168 Hours) 196 32 ROHS3 Compliant No 196 196-BGA Surface Mount -40°C~85°C 240mA e1 Tin/Silver/Copper (Sn/Ag/Cu) BOTTOM BALL 1.8V ZL50050 1 Switch 1.71V~1.89V
MCP6541RT-E/OT MCP6541RT-E/OT Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 11 Weeks Surface Mount Tape & Reel (TR) 2007 yes Active 1 (Unlimited) 5 EAR99 3.1mm ROHS3 Compliant Lead Free No 5 SC-74A, SOT-753 No SVHC 1.3mm 1.8mm Surface Mount -40°C~125°C 1 General Purpose e3 Matte Tin (Sn) - annealed DUAL GULL WING 260 5V 40 MCP6541 5 CMOS, Push-Pull, Rail-to-Rail, TTL Comparator 1 1pA 7mV 1pA 4000 ns 8 μs 256 °C/W 1μA 70 dB 6.5mV 80dB 7V 1.6V~5.5V 7mV @ 5.5V 1pA @ 5.5V 1μA 70dB CMRR, 80dB PSRR
LPC47M112-MW LPC47M112-MW Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 1 Weeks Tray 2005 Active 3 (168 Hours) 100 3.3V ROHS3 Compliant No 100 100-BQFP LPC Surface Mount CMOS QUAD GULL WING 3.3V LPC47M112 COMMERCIAL YES 0.635mm 70°C Other uPs/uCs/Peripheral ICs 15mA
MCP4442-503E/ST MCP4442-503E/ST Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 11 Weeks Surface Mount Tube 2010 WiperLock™ Active 1 (Unlimited) 14 129 EAR99 5mm ROHS3 Compliant Lead Free No 14 14-TSSOP (0.173, 4.40mm Width) I2C No SVHC 1mm 4.4mm 50kOhm Surface Mount -40°C~125°C CMOS 0.2 kHz 4 600μA e3 Matte Tin (Sn) - annealed DUAL GULL WING 260 2.7V 40 MCP4442 14 Digital Potentiometers 3/5V Rheostat Selectable Address ±20% 4 15 ppm/°C Non-Volatile 1.8V~5.5V DIGITAL POTENTIOMETER Linear 50000Ohm 129 75 5.5V 150ppm/°C
MT8880CN1 MT8880CN1 Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 8 Weeks IN PRODUCTION (Last Updated: 1 month ago) Surface Mount Tube yes Active 3 (168 Hours) 24 5V 8.2mm ROHS3 Compliant No 24 24-SSOP (0.209, 5.30mm Width) 3.58MHz 5.3mm Surface Mount 220.105698mg -40°C~85°C CMOS 7mA 2mm e3 MATTE TIN DUAL GULL WING 260 5V 30 0.65mm Telecom Signaling Circuits 5V 1W 1 Transceiver DTMF Transceiver DTMF SIGNALING CIRCUIT 4.75V~5.25V
MM5450YV-TR MM5450YV-TR Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 8 Weeks Surface Mount Tape & Reel (TR) 2006 Active 3 (168 Hours) 44 EAR99 16.56mm ROHS3 Compliant Lead Free 15mA No 44 44-LCC (J-Lead) Serial No SVHC 16.56mm Surface Mount -40°C~85°C NMOS 10mA 10mA 4.57mm 8542.39.00.01 1 10mA 11V e3 QUAD J BEND 245 40 MM5450 1.27mm 1.8V 35 15mA 4.75V 1W 25mA 34 TS 16949 500kHz 4.75V~11V LED NO 0.5 MHz SEGMENT 4-DIGIT
MCP6569-E/STVAO MCP6569-E/STVAO Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Tube Automotive, AEC-Q100 Active 1 (Unlimited) 14 5mm 14-TSSOP (0.173, 4.40mm Width) compliant Surface Mount -40°C~125°C 1.2mm 4 General Purpose DUAL GULL WING 1.8V CMOS, Open-Drain YES 0.65mm Comparator 4 80 ns 5mV 6.5V 1.8V~5.5V 10mV @ 5.5V 1pA @ 5.5V 50mA 130μA 66dB CMRR, 70dB PSRR 80ns
MCP1316T-44LE/OT MCP1316T-44LE/OT Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 8 Weeks Tape & Reel (TR) 2012 yes Active 1 (Unlimited) 5 2.9mm ROHS3 Compliant SC-74A, SOT-753 Surface Mount -40°C~125°C TA 1 Simple Reset/Power-On Reset e3 Matte Tin (Sn) DUAL GULL WING 260 40 MCP1316 YES 0.95mm R-PDSO-G5 1 Push-Pull, Totem Pole 1 YES 4.4V Active Low 140ms Minimum
SY55859LMG-TR SY55859LMG-TR Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 8 Weeks Surface Mount Tape & Reel (TR) 2005 SuperLite™ Active 2 (1 Year) 85°C -40°C 3.3V ROHS3 Compliant No 32 32-VFQFN Exposed Pad, 32-MLF® 3.6V 3V Surface Mount -40°C~85°C Crosspoint Switch 6V 55859 2.7 Gbps 32-MLF® (5x5) 2 Single 3V~3.6V 2 x 2:2 Single Supply
SG2524N SG2524N Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download IN PRODUCTION (Last Updated: 2 weeks ago) Through Hole Tube yes Discontinued 1 (Unlimited) 16 EAR99 RoHS Compliant Lead Free 16 16-DIP (0.300, 7.62mm) 400kHz Through Hole 1.627801g -25°C~85°C TA BIPOLAR 7mA 5.08mm e3 Matte Tin (Sn) DUAL SG*524 Transistor Driver Switching Regulator or Controllers 5V 2 50mA 20V SWITCHING CONTROLLER 8mA 400ns 200 ns Positive VOLTAGE-MODE 8V 40V Step-Down, Step-Up/Step-Down PULSE WIDTH MODULATION Buck, Flyback, Push-Pull 49 % 8V~40V Enable 100kHz~300kHz Yes 1 No
AT6005ALV-4AC AT6005ALV-4AC Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 1999 AT6000(LV) Obsolete 3 (168 Hours) Non-RoHS Compliant 144-LQFP Surface Mount 0°C~70°C AT6005 144-LQFP (20x20) 108 3.135V~3.465V 15000 3136
MIC2791N-04VMT-T5 MIC2791N-04VMT-T5 Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 5 Weeks Surface Mount Tape & Reel (TR) 2016 yes Active 1 (Unlimited) 6 ROHS3 Compliant Lead Free 6 THRESHOLD VOLTAGE=0.4 V 6-UFDFN Exposed Pad 5.5V No SVHC 1.5V Surface Mount -40°C~125°C TJ 50μA 1 Simple Reset/Power-On Reset DUAL NO LEAD 3.3V MIC2791 0.5mm 1 Open Drain or Open Collector 1 NO 1 % Active Low Adjustable/Selectable 1.2 s
MCP1402T-E/OT MCP1402T-E/OT Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 11 Weeks Surface Mount Tape & Reel (TR) 2005 yes Active 1 (Unlimited) 5 EAR99 3.0988mm ROHS3 Compliant Lead Free No 5 SC-74A, SOT-753 No SVHC 1.2954mm 1.8034mm Surface Mount -40°C~150°C TJ CMOS 1.1mA Non-Inverting 1 200μA e3 Matte Tin (Sn) DUAL GULL WING 260 40 MCP1402 5 MOSFET Drivers 390mW 18V 1 500mA 500mA TRUE 10μA 390mW PUSH-PULL BASED MOSFET DRIVER TOTEM-POLE 25ns 20 ns Single 4.5V~18V 0.5A NO 19ns 15ns Low-Side IGBT, N-Channel, P-Channel MOSFET 500mA 500mA 0.8V 2.4V
MGC3130T-I/MQ MGC3130T-I/MQ Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 9 Weeks Tape & Reel (TR) 2013 Active 1 (Unlimited) 28 85°C -40°C 5mm ROHS3 Compliant No 28 28-VFQFN Exposed Pad 5mm Surface Mount 1mm 8542.39.00.01 1 e3 Matte Tin (Sn) - annealed QUAD 3.3V MGC3130 INDUSTRIAL YES 0.5mm Tracking and Gesture Controller TELECOM CIRCUIT 2.5V~3.465V
MCP4431T-104E/ML MCP4431T-104E/ML Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 16 Weeks Tape & Reel (TR) 2010 Active 1 (Unlimited) 20 ROHS3 Compliant 20 20-VFQFN Exposed Pad I2C 100kOhm Surface Mount -40°C~125°C CMOS e3 Matte Tin (Sn) - annealed QUAD NO LEAD MCP4431 YES 0.5mm Not Qualified 3/5V Potentiometer Selectable Address ±20% 4 Volatile 1.8V~5.5V Linear 129 75 150ppm/°C
TC1270ARVRCTR TC1270ARVRCTR Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 8 Weeks Surface Mount Tape & Reel (TR) 2011 yes Active 1 (Unlimited) 4 EAR99 2.9mm ROHS3 Compliant Lead Free 4 TO-253-4, TO-253AA 5.5V 1V Surface Mount -40°C~125°C TA 10μA 1 Simple Reset/Power-On Reset e3 Matte Tin (Sn) DUAL GULL WING 260 3V 40 TC1270A 4 1 Power Management Circuits 3V Push-Pull, Totem Pole No 1 NO 2.58V 2.68V 2.58V 2.68V 7μA 2.63V Active Low 140ms Minimum
ZL30362GDG2003X ZL30362GDG2003X Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray Obsolete 3 (168 Hours) ROHS3 Compliant 144-BGA Surface Mount -40°C~85°C 1 LVCMOS, LVPECL 144-LBGA (13x13) Clock 750MHz 11:16 Ethernet, Fibre Channel, SONET/SDH, Stratum Yes Yes/Yes
DS31400GN2 DS31400GN2 Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 8 Weeks Tray Active 3 (168 Hours) ROHS3 Compliant 256-LBGA, CSBGA Surface Mount -40°C~85°C DS31400 1 CML, CMOS, LVDS, LVPECL, TTL 256-CSPBGA (17x17) CMOS, TTL 750MHz 1.8V 8:14 Ethernet, SONET/SDH, Stratum, Telecom Yes Yes/Yes
AT17C65-10SC AT17C65-10SC Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube 2000 Obsolete 1 (Unlimited) Non-RoHS Compliant 20-SOIC (0.295, 7.50mm Width) Surface Mount 0°C~70°C AT17C65 20-SOIC 64kb 4.75V~5.25V Serial EEPROM
SY10H352JZ TR SY10H352JZ TR Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tape & Reel (TR) 2006 10H Obsolete 3 (168 Hours) ROHS3 Compliant 20-LCC (J-Lead) Surface Mount 0°C~85°C TA 10H352 Differential 1 20-PLCC (9x9) Unidirectional PECL CMOS Mixed Signal 4
MIC38C43-1BN MIC38C43-1BN Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube 1998 Obsolete 1 (Unlimited) Non-RoHS Compliant 14-DIP (0.300, 7.62mm) Surface Mount -40°C~85°C TA MIC38C43 Transistor Driver 1 14-DIP Positive, Isolation Capable Step-Up, Step-Down, Step-Up/Step-Down Buck, Boost, Flyback, Forward Converter 7.6V~20V Frequency Control 500kHz Yes 1 96% No
MIC2014-0.5YM5-TR MIC2014-0.5YM5-TR Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 15 Weeks Surface Mount Tape & Reel (TR) Active 1 (Unlimited) 85°C -40°C ROHS3 Compliant Lead Free 500mA 5 SC-74A, SOT-753 On/Off 5.5V 100MOhm Surface Mount -40°C~85°C TA Non-Inverting MIC2014 P-Channel 6V 1 Load Discharge 500mA General Purpose SOT-23-5 High Side Current Limiting (Fixed), Over Temperature Not Required 2.5V~5.5V 70mOhm 500mA 1:1
TC7126CLW713 TC7126CLW713 Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tape & Reel (TR) 2002 yes Obsolete 3 (168 Hours) 44 EAR99 15V 16.5862mm Non-RoHS Compliant 44 44-LCC (J-Lead) 16.5862mm Surface Mount 0°C~70°C CMOS 55μA 4.57mm 8542.39.00.01 1 e3 Matte Tin (Sn) QUAD J BEND 245 9V 40 TC7126 44 1.27mm Not Qualified 1.23W 7 Segment 9V LCD 1 BINARY ADC, DUAL-SLOPE A/D 3.5 Digits
AT6002-4AC AT6002-4AC Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tray 1999 AT6000(LV) Obsolete 3 (168 Hours) 70°C 0°C 5V Non-RoHS Compliant Contains Lead 100 100-TQFP 5.25V 4.75V Surface Mount 0°C~70°C TC AT6002 100-TQFP (14x14) 80 4.75V~5.25V 6000 1024
MCP2003BT-E/SN MCP2003BT-E/SN Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 8 Weeks Surface Mount Tape & Reel (TR) 2016 Active 1 (Unlimited) 8 EAR99 4.9mm ROHS3 Compliant 8-SOIC (0.154, 3.90mm Width) 3.9mm Surface Mount -40°C~125°C 1.75mm 8542.39.00.01 1 Transceiver e3 Matte Tin (Sn) - annealed DUAL GULL WING 12V MCP2003 1.27mm R-PDSO-G8 20kBaud Half Duplex 1 TS 16949 NO 5.5V~30V LINbus SCHMITT TRIGGER ISO 17987; ISO 7637 1 4000 ns 6000 ns 1/1 Half
TC520ACOE TC520ACOE Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 15 Weeks Surface Mount Tube 2002 yes Active 1 (Unlimited) 16 EAR99 70°C 0°C 6V ROHS3 Compliant Lead Free No 16 16-SOIC (0.295, 7.50mm Width) Serial 7.495mm Surface Mount 2.64mm 1 e3 Matte Tin (Sn) DUAL GULL WING 260 5V 40 TC52 16 COMMERCIAL 4.5V 1 5.5V ANALOG CIRCUIT Computer Peripheral Interface, Data Acquisition System Interface, Portable Instruments 2.125 B 18 4.5V~5.5V
AT6003-4AI AT6003-4AI Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 1999 AT6000(LV) Obsolete 3 (168 Hours) Non-RoHS Compliant 100-TQFP Surface Mount -40°C~85°C TC AT6003 80 4.5V~5.5V 9000 1600
TC1304-ZS0EUNTR TC1304-ZS0EUNTR Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 6 Weeks Surface Mount Tape & Reel (TR) 2008 yes Active 1 (Unlimited) 10 EAR99 3mm ROHS3 Compliant Lead Free 10 AUTOMATIC PWM TO PFM MODE 10-TFSOP, 10-MSOP (0.118, 3.00mm Width) 850μm Surface Mount -40°C~85°C 1 e3 Matte Tin (Sn) DUAL GULL WING 260 40 TC1304 10 0.5mm Power Management Circuits 3/5V 2 500mA 500mA 3.6V SWITCHING REGULATOR 0.11mA CURRENT-MODE 5.5V 2.7V~5.5V PULSE WIDTH MODULATION Step-Down (Buck) Synchronous (1), Linear (LDO) (1) 2MHz 1.5V Yes Adj 500mA 1.5V 300mA No
ATA6663-TAQY ATA6663-TAQY Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Surface Mount Tape & Reel (TR) 2011 Obsolete 1 (Unlimited) 8 EAR99 150°C -40°C 4.9mm ROHS3 Compliant No 8 8-SOIC (0.154, 3.90mm Width) 1 Surface Mount 540.001716mg 1.2mA 2mA 1 2mA Transceiver DUAL GULL WING 13.5V ATA6663 500mV 6 μs 5V~27V LINbus 1/1 Half
Settings Need Help?
Top FAQ's

How can I quickly find answers to my questions?

Please visit the Help & Support area of our website to find information regarding ordering, shipping, delivery and more.

What is my Order Status?

Registered users can track orders from their account dropdown, or click here. *Order Status may take 12 hours to update after initial order is placed.

How do I return product?

Users can begin the returns process by starting with our Returns Page.

How do I find price and availability?

Quotes can be created by registered users in myLists.

How do I create a 'HK JDW' Account?

Visit the Registration Page and enter the required information. You will receive an email confirmation when your registration is complete.

United Kingdom/GBP Summary
Fast Shipping Fast Delivery

Orders are typically delivered to United Kingdom within 48 hours depending on location.

Free Shipping Free Shipping

Free delivery to United Kingdom on orders of £33 or more. A delivery charge of £12 will be billed on all orders less than £33.

Incoterms Incoterms

DDP (Duty and customs paid by HK JDW)

Payment Options Payment Types

Credit account for qualified institutions and businesses

Payment in Advance by Wire Transfer

Visa Mastercard American Express PayPal Apple Pay Google Pay

Marketplace Marketplace Product

More Products From Fully Authorized Partners

Average Time to Ship 1-3 Days, extra ship charges may apply. Please see product page, cart, and checkout for actual ship speed.

Incoterms: CPT (Duty, customs, and applicable VAT/Tax due at time of delivery)

For more information visit Help & Support