Linear Technology / Analog Devices(30346)

Compare Image Name Manufacturer Pricing(USD) Quantity Weight(Kg) Size(LxWxH) Part Status Type Series Mount Mounting Type Operating Temperature Packaging Size / Dimension Moisture Sensitivity Level (MSL) Technology Operating Supply Current Input Type Current - Supply Height Seated (Max) RoHS Status Published Datasheet Package / Case Length Height Width Lead Free Number of Terminations Factory Lead Time REACH SVHC Number of Pins Interface Lifecycle Status ECCN Code Additional Feature Max Frequency Reach Compliance Code HTS Code Number of Functions Voltage - Input (Max) Max Input Voltage Evaluation Kit JESD-609 Code Feature Terminal Finish Applications Polarity Surface Mount Voltage - Supply Terminal Position Terminal Form Peak Reflow Temperature (Cel) Supply Voltage Terminal Pitch Base Part Number Pin Count Input Range Supply Voltage-Max (Vsup) Supply Voltage-Min (Vsup) Number of Channels Analog IC - Other Type Time@Peak Reflow Temperature-Max (s) Adjustable Threshold Subcategory Output Polarity Power Supplies Qualification Status JESD-30 Code Data Interface Max Output Current Max Output Voltage Min Input Voltage Min Output Voltage Number of Bits Sampling Rate Output Voltage Output Current Dropout Voltage Output Type Voltage - Input Turn On Delay Time Logic Function Propagation Delay Function Number of Outputs Voltage - Output 1 Threshold Voltage Switching Frequency Number of Timers/Counters Output Configuration Current - Output (Max) Input Voltage-Nom Input Voltage (Min) Input Voltage (Max) Output Voltage-Max Output Voltage-Min Output Current-Max Current - Output High, Low Topology Synchronous Rectifier Max Duty Cycle Clock Sync Number of Output Phases Voltage - Output 2 Number of A/D Converters Independent Circuits Utilized IC / Part Number of Data/Clock Inputs Control Mode Control Technique Switcher Configuration Logic Type Voltage - Output Voltage - Input (Min) Schmitt Trigger Input Internal Switch(s) Dropout Voltage1-Nom Load Regulation-Max(%) Adjustability Voltage - Output 3 Control Features Meter Type Measurement Error Voltage - Supply (Vcc/Vdd) Supplied Contents Frequency - Switching Output Isolation Sampling Rate (Per Second) Duty Cycle (Max) Power (Typ) @ Conditions
LT3758AEDD#PBF LT3758AEDD#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~125°C TJ Tube 1 (Unlimited) 0.8mm ROHS3 Compliant 2011 /files/lineartechnologyanalogdevices-lt3758mpmsepbf-datasheets-9589.pdf 10-WFDFN Exposed Pad 3mm 3mm 10 8 Weeks 10 PRODUCTION (Last Updated: 4 weeks ago) EAR99 1MHz e3 Matte Tin (Sn) YES DUAL 0.5mm LT3758 SWITCHING REGULATOR 7.2V 25A Transistor Driver Step-Up, Step-Up/Step-Down 1 Positive or Negative, Isolation Capable 24V 5.5V Boost, Flyback, SEPIC No Yes CURRENT-MODE PULSE WIDTH MODULATION Enable, Frequency Control, Soft Start 5.5V~100V 100kHz~1MHz
DC816A-R DC816A-R Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Box 1 (Unlimited) ROHS3 Compliant 2005 /files/lineartechnologyanalogdevices-dc816ae-datasheets-0187.pdf 8 Weeks PRODUCTION (Last Updated: 4 weeks ago) Yes 1 ~ 2Vpp Parallel 10 25 Msps 2 LTC2286 Board(s) 25M 150mW @ 25MSPS
LTM8032MPY#PBF LTM8032MPY#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Non-Isolated PoL Module µModule® Surface Mount -55°C~125°C Tray 0.59Lx0.35W x 0.13 H 15.0mmx9.0mmx3.4mm 3 (168 Hours) 25μA ROHS3 Compliant 2012 /files/lineartechnologyanalogdevices-ltm8032iypbf-datasheets-6599.pdf 71-BBGA Module 3.302mm 9mm 71 12 Weeks No SVHC 71 PRODUCTION (Last Updated: 3 weeks ago) EAR99 1 36V ITE (Commercial) YES BOTTOM BALL NOT SPECIFIED LTM8032 71 NOT SPECIFIED Switching Regulator or Controllers Not Qualified 2A 10V 800mV 10V 2A Adjustable 1 0.8V~10V 2.4MHz 10V CURRENT-MODE PULSE WIDTH MODULATION BUCK 3.6V
LT8311EFE#PBF LT8311EFE#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount Surface Mount -40°C~150°C Tube 1 (Unlimited) 4.5mA 1.2mm ROHS3 Compliant 2014 /files/lineartechnologyanalogdevices-lt8311efetrpbf-datasheets-4142.pdf 20-TSSOP (0.173, 4.40mm Width), 16 Leads, Exposed Pad 6.5mm 4.4mm 16 8 Weeks No SVHC 20 PRODUCTION (Last Updated: 2 weeks ago) EAR99 8542.39.00.01 1 e3 Matte Tin (Sn) Secondary-Side Controller 3.7V~30V DUAL GULL WING NOT SPECIFIED 0.65mm LT8311 20 SWITCHING CONTROLLER NOT SPECIFIED R-PDSO-G16 12V 3.7V 30V CURRENT-MODE
LT3758HMSE#PBF LT3758HMSE#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount Surface Mount -40°C~150°C TJ Tube 1 (Unlimited) BIPOLAR ROHS3 Compliant 2010 /files/lineartechnologyanalogdevices-lt3758mpmsepbf-datasheets-9589.pdf 10-TFSOP, 10-MSOP (0.118, 3.00mm Width) Exposed Pad 3mm 3mm Lead Free 10 8 Weeks No SVHC 10 PRODUCTION (Last Updated: 3 months ago) EAR99 1MHz e3 Matte Tin (Sn) DUAL GULL WING 260 0.5mm LT3758 SWITCHING REGULATOR Switching Regulator or Controllers 100V Transistor Driver Step-Up, Step-Up/Step-Down 1 Positive or Negative, Isolation Capable 24V 5.5V Boost, Flyback, SEPIC No Yes CURRENT-MODE PULSE WIDTH MODULATION Enable, Frequency Control, Soft Start 5.5V~100V 100kHz~1MHz
DC1564A-B DC1564A-B Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Bulk 1 (Unlimited) ROHS3 Compliant 2011 /files/lineartechnologyanalogdevices-ltc2155cup14pbf-datasheets-1529.pdf 8 Weeks No SVHC Parallel, SPI, Serial PRODUCTION (Last Updated: 3 weeks ago) Yes LTC2156 1.5Vpp Parallel, Serial, SPI 14 210 Msps 2 LTC2156-14 Board(s) 210M 670mW @ 210MSPS
LTM4643MPY LTM4643MPY Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Non-Isolated PoL Module µModule® Surface Mount -55°C~125°C Tray 0.59Lx0.35W x 0.10 H 15.0mmx9.0mmx2.4mm 3 (168 Hours) Non-RoHS Compliant /files/lineartechnologyanalogdevices-ltm4643eypbf-datasheets-7999.pdf 77-BBGA Module 12 Weeks 77 PRODUCTION (Last Updated: 3 months ago) 20V OCP, OTP, OVP ITE (Commercial) LTM4643 77 4 0.6V~3.3V 3A 3A 3A 3A 0.6V~3.3V 4V 0.6V~3.3V
LT3798IMSE#PBF LT3798IMSE#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~125°C Tube 1 (Unlimited) BIPOLAR ROHS3 Compliant 2012 /files/lineartechnologyanalogdevices-lt3798emsepbf-datasheets-8643.pdf 16-TFSOP (0.118, 3.00mm Width) Exposed Pad 4.039mm 3mm Lead Free 16 8 Weeks 16 PRODUCTION (Last Updated: 2 weeks ago) EAR99 ALSO OPERATES AS LDO REGULATOR 1 e3 Matte Tin (Sn) YES DUAL GULL WING 0.5mm LT3798 16 POWER FACTOR CONTROLLER Switching Regulator or Controllers 1 18V 38V Flyback CURRENT-MODE PULSE WIDTH MODULATION BOOST No 10V~38V 500Hz~150KHz Isolated
LTC7800IUDC#PBF LTC7800IUDC#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~125°C TJ Tube 1 (Unlimited) CMOS 0.8mm RoHS Compliant 2013 /files/lineartechnologyanalogdevices-ltc7800iudcpbf-datasheets-2417.pdf 20-WFQFN Exposed Pad 4mm 3mm 20 8 Weeks compliant e3 Matte Tin (Sn) YES QUAD 260 0.5mm LTC7800 SWITCHING CONTROLLER 30 R-PQCC-N20 Transistor Driver Step-Down 1 Positive 12V 4V 60V 24V 0.8V Buck No CURRENT-MODE PULSE WIDTH MODULATION Current Limit, Power Good, Soft Start, Tracking 4V~60V 320kHz~2.25MHz 98%
DC816A-L DC816A-L Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Box 1 (Unlimited) ROHS3 Compliant 2005 /files/lineartechnologyanalogdevices-dc816ae-datasheets-0187.pdf 8 Weeks PRODUCTION (Last Updated: 4 weeks ago) Yes 1 ~ 2Vpp Parallel 12 10 Msps 2 LTC2290 Board(s) 10M 120mW @ 10MSPS
LTC6993CDCB-4#TRMPBF LTC6993CDCB-4#TRMPBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download LTC®6993 Surface Mount 0°C~70°C Tape & Reel (TR) 1 (Unlimited) CMOS 0.8mm ROHS3 Compliant 2011 /files/lineartechnologyanalogdevices-ltc6993cs61trmpbf-datasheets-5960.pdf 6-WFDFN Exposed Pad 3mm 2mm 6 8 Weeks No SVHC 6 PRODUCTION (Last Updated: 2 weeks ago) EAR99 1 e3 Matte Tin (Sn) YES 2.25V~5.5V DUAL 3.3V 0.5mm LTC6993 6 5.5V 2.25V TRUE 2.5/5V 28 ns Multivibrator 11ns 1 16mA 16mA 1 Monostable No
LT3798IMSE#TRPBF LT3798IMSE#TRPBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~125°C Tape & Reel (TR) 1 (Unlimited) BIPOLAR 1.1mm ROHS3 Compliant 2012 /files/lineartechnologyanalogdevices-lt3798emsepbf-datasheets-8643.pdf 16-TFSOP (0.118, 3.00mm Width) Exposed Pad 4.039mm 3mm 16 8 Weeks EAR99 ALSO OPERATES AS LDO REGULATOR 8542.39.00.01 1 e3 Matte Tin (Sn) YES DUAL GULL WING 0.5mm LT3798 16 POWER FACTOR CONTROLLER Switching Regulator or Controllers R-PDSO-G16 18V 10V 38V Flyback CURRENT-MODE PULSE WIDTH MODULATION BOOST No 10V~38V 500Hz~150KHz Isolated
LTC3727EUH-1#PBF LTC3727EUH-1#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~85°C TA Tube 1 (Unlimited) CMOS ROHS3 Compliant 2007 /files/lineartechnologyanalogdevices-ltc3727egpbf-datasheets-9323.pdf 32-WFQFN Exposed Pad 5mm 750μm 5mm Lead Free 32 26 Weeks 32 PRODUCTION (Last Updated: 2 weeks ago) EAR99 580kHz e3 Matte Tin (Sn) YES QUAD 260 LTC3727 1 SWITCHING CONTROLLER 30 Switching Regulator or Controllers 14V 3A Transistor Driver Step-Down 2 Positive 15V 4V 36V Buck Yes No CURRENT-MODE PULSE WIDTH MODULATION PHASE-SHIFT Enable, Power Good, Soft Start 4V~30V 255kHz~530kHz 99.4%
DC1884A-F DC1884A-F Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Box 1 (Unlimited) ROHS3 Compliant 2012 /files/lineartechnologyanalogdevices-ltm9007iy14pbf-datasheets-1631.pdf 8 Weeks No SVHC LVDS, Serial PRODUCTION (Last Updated: 3 weeks ago) Yes LTM9006 1 ~ 2Vpp Serial LVDS 14 25 Msps 8 LTM9006-14 Board(s) 25M 477mW @ 25MSPS
LTC6993CS6-4#TRPBF LTC6993CS6-4#TRPBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download LTC®6993 Surface Mount 0°C~70°C Tape & Reel (TR) 1 (Unlimited) CMOS ROHS3 Compliant 2012 /files/lineartechnologyanalogdevices-ltc6993cs61trmpbf-datasheets-5960.pdf SOT-23-6 Thin, TSOT-23-6 2.9mm 6 8 Weeks EAR99 1 e3 Matte Tin (Sn) YES 2.25V~5.5V DUAL GULL WING 3.3V 0.95mm LTC6993 6 5.5V 2.25V Prescaler/Multivibrators TRUE 2.5/5V R-PDSO-G6 11ns 16mA 16mA 1 1 Monostable No
LTC3776EUF#PBF LTC3776EUF#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~85°C Tube 1 (Unlimited) CMOS ROHS3 Compliant 2007 /files/lineartechnologyanalogdevices-ltc3776eufpbf-datasheets-8514.pdf 24-WFQFN Exposed Pad 4mm 750μm 4mm Lead Free 24 8 Weeks 24 PRODUCTION (Last Updated: 1 week ago) EAR99 1 e3 Matte Tin (Sn) Controller, DDR, QDR YES QUAD NO LEAD 260 0.5mm LTC3776 24 1 DUAL SWITCHING CONTROLLER 30 Switching Regulator or Controllers Not Qualified 5A 2.75V~9.8V 2 4.2V CURRENT-MODE PUSH-PULL 0.3V~9.8V
LTC7801IUFD#PBF LTC7801IUFD#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~125°C TJ Tube 1 (Unlimited) CMOS 0.8mm RoHS Compliant 2013 /files/lineartechnologyanalogdevices-ltc7801efepbf-datasheets-2539.pdf 24-WFQFN Exposed Pad 5mm 4mm 24 8 Weeks 24 PRODUCTION (Last Updated: 1 month ago) SEATED HT-CALCULATED e3 Matte Tin (Sn) YES QUAD 260 0.5mm LTC7801 SWITCHING CONTROLLER 30 Transistor Driver Step-Down 1 Positive 12V 4V 60V 0.8V Buck No CURRENT-MODE PULSE WIDTH MODULATION Current Limit, Power Good, Soft Start, Tracking 4V~140V 50kHz~900kHz 100%
DC918C-D DC918C-D Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Box 1 (Unlimited) ROHS3 Compliant 2006 /files/analogdevices-dc918cd-datasheets-8731.pdf 8 Weeks Parallel PRODUCTION (Last Updated: 3 months ago) Yes LTC2206 1.5 ~ 2.25Vpp Parallel 16 80 Msps 1 LTC2206 Board(s) 80M 725mW @ 80MSPS
LTC6993IS6-1#TRPBF LTC6993IS6-1#TRPBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download LTC®6993 Surface Mount -40°C~85°C Tape & Reel (TR) 1 (Unlimited) CMOS ROHS3 Compliant 2012 /files/lineartechnologyanalogdevices-ltc6993cs61trmpbf-datasheets-5960.pdf SOT-23-6 Thin, TSOT-23-6 2.9mm 6 10 Weeks EAR99 1 e3 Matte Tin (Sn) YES 2.25V~5.5V DUAL GULL WING 3.3V 0.95mm LTC6993 6 5.5V 2.25V Prescaler/Multivibrators TRUE 2.5/5V R-PDSO-G6 11ns 16mA 16mA 1 1 Monostable No
LT1580IT#PBF LT1580IT#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Through Hole -40°C~125°C Tube 1 (Unlimited) BIPOLAR 10mA ROHS3 Compliant 2003 /files/lineartechnologyanalogdevices-lt1580ir25pbf-datasheets-8759.pdf TO-220-5 Formed Leads Lead Free 5 8 Weeks 5 PRODUCTION (Last Updated: 3 months ago) EAR99 1 6V e3 Matte Tin (Sn) - with Nickel (Ni) barrier Converter, Intel Pentium® Positive NO SINGLE NOT SPECIFIED LT1580 5 NOT SPECIFIED Other Regulators Not Qualified 4.65V 1.79V 1.25V 7A 540mV 1.79V~6V 1 1.25V~4.65V 1.15V 0.4% ADJUSTABLE
LTC3803ES6#TRPBF LTC3803ES6#TRPBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~125°C TJ Tape & Reel (TR) 1 (Unlimited) CMOS ROHS3 Compliant 2010 /files/lineartechnologyanalogdevices-ltc3803es6trmpbf-datasheets-0775.pdf SOT-23-6 Thin, TSOT-23-6 2.9mm Lead Free 6 8 Weeks 6 PRODUCTION (Last Updated: 3 months ago) EAR99 240kHz e3 Matte Tin (Sn) YES DUAL GULL WING 260 0.95mm LTC3803 SWITCHING CONTROLLER 30 Switching Regulator or Controllers 1A Transistor Driver Step-Up/Step-Down 1 Positive, Isolation Capable 8V 9.2V Flyback No CURRENT-MODE PULSE WIDTH MODULATION SINGLE Current Limit, Enable 5.7V~8V 200kHz 80%
DC851A-X DC851A-X Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Box 1 (Unlimited) ROHS3 Compliant 2005 /files/lineartechnologyanalogdevices-dc851au-datasheets-1956.pdf 8 Weeks LTC2280 1 ~ 2Vpp Parallel 10 2 LTC2280 Board(s) 105M 540mW @ 105MSPS
LTC2946HDE LTC2946HDE Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~125°C Tube 1 (Unlimited) CMOS 900μA 0.8mm Non-RoHS Compliant 16-WFDFN Exposed Pad 4mm 3mm 16 1 e3 Matte Tin (Sn) NO 2.7V~100V DUAL NO LEAD 48V 0.45mm LTC2946 16 100V 4V 3 POWER SUPPLY SUPPORT CIRCUIT YES R-PDSO-N16 +1.3V Single Phase 0.5%
LT3513EUHF#PBF LT3513EUHF#PBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~125°C Tube 1 (Unlimited) BIPOLAR 0.8mm ROHS3 Compliant 2011 /files/lineartechnologyanalogdevices-lt3513euhftrpbf-datasheets-0146.pdf 38-WFQFN Exposed Pad 7mm Lead Free 38 8 Weeks 38 PRODUCTION (Last Updated: 2 weeks ago) EAR99 1 30V e3 Matte Tin (Sn) Converter, TFT LCD YES QUAD NO LEAD 260 LT3513 38 SWITCHING REGULATOR 30 Switching Regulator or Controllers Not Qualified 4.5V Adjustable 4.5V~30V 5 2.1MHz 12V CURRENT-MODE BUCK-BOOST 0.8V~40V
LTC3803MPS6-3#TRMPBF LTC3803MPS6-3#TRMPBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -55°C~150°C TJ Tape & Reel (TR) 1 (Unlimited) CMOS ROHS3 Compliant 2010 /files/lineartechnologyanalogdevices-ltc3803es63trpbf-datasheets-3840.pdf SOT-23-6 Thin, TSOT-23-6 2.9mm 6 16 Weeks 6 PRODUCTION (Last Updated: 3 weeks ago) EAR99 330kHz e3 Matte Tin (Sn) YES DUAL GULL WING 0.95mm LTC3803 SWITCHING CONTROLLER Transistor Driver Step-Up/Step-Down Positive, Isolation Capable 8V 7.2V 1A Flyback No 80 % 1 CURRENT-MODE SINGLE Current Limit, Enable 5.7V~8V 300kHz
DC1620A-I DC1620A-I Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Bulk 1 (Unlimited) ROHS3 Compliant 2011 /files/lineartechnologyanalogdevices-ltc2145iup14pbf-datasheets-6507.pdf 8 Weeks LTC2143 1 ~ 2Vpp Parallel 14 2 LTC2143-14 Board(s) 80M 237mW @ 80MSPS
LTC2946IDE-1#TRPBF LTC2946IDE-1#TRPBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~85°C Tape & Reel (TR) 1 (Unlimited) CMOS 900μA 0.8mm ROHS3 Compliant 2015 /files/lineartechnologyanalogdevices-ltc2946cmspbf-datasheets-7680.pdf 16-WFDFN Exposed Pad 4mm 3mm 16 18 Weeks 1 NO 2.7V~100V DUAL NO LEAD 48V 0.45mm LTC2946 16 100V 4V 3 POWER SUPPLY SUPPORT CIRCUIT YES R-PDSO-N16 +1.3V Single Phase 0.4%
LTK001ACJ8 LTK001ACJ8 Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Thermocouple Conditioner LT® Through Hole 0°C~70°C Tube 1 (Unlimited) Voltage 800μA Non-RoHS Compliant 8-CDIP (0.300, 7.62mm) LTK001 Thermocouple
LTC1625IGN#TRPBF LTC1625IGN#TRPBF Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Surface Mount -40°C~85°C TA Tape & Reel (TR) 1 (Unlimited) CMOS ROHS3 Compliant 1998 /files/lineartechnologyanalogdevices-ltc1625cgnpbf-datasheets-9227.pdf 16-SSOP (0.154, 3.90mm Width) 4.9mm Lead Free 16 8 Weeks 16 PRODUCTION (Last Updated: 3 weeks ago) EAR99 165kHz e3 Matte Tin (Sn) YES DUAL GULL WING 250 0.635mm LTC1625 SWITCHING CONTROLLER NOT SPECIFIED Switching Regulator or Controllers Not Qualified 36V 10A Transistor Driver Step-Down, Step-Up/Step-Down 1 Positive or Negative 15V 3.9V Buck, Boost Yes CURRENT-MODE PULSE WIDTH MODULATION Enable, Soft Start 3.9V~36V 150kHz 99%
DC996B-H DC996B-H Linear Technology / Analog Devices
RFQ

Min: 1

Mult: 1

download Bulk 1 (Unlimited) ROHS3 Compliant 2012 /files/lineartechnologyanalogdevices-ltc2216iuppbf-datasheets-1706.pdf 8 Weeks LTC2216 2.25Vpp Parallel 16 1 LTC2216 Board(s) 80M 1.24W @ 80MSPS

In Stock

Please send RFQ , we will respond immediately.