页 46 - Linear Technology 产品 | 深圳黑森尔电子
联系我们
SalesDept@heisener.com +86-0755-87210559 ext.802

Linear Technology 产品

记录 27,050
页  46/902
图片
零件编号
制造商
描述
封装
库存
数量
LT3015EDD-15#TRPBF
Linear Technology

IC REG LINEAR -15V 1.5A 8DFN

  • Output Configuration: Negative
  • Output Type: Fixed
  • Number of Regulators: 1
  • Voltage - Input (Max): -30V
  • Voltage - Output (Min/Fixed): -15V
  • Voltage - Output (Max): -
  • Voltage Dropout (Max): 0.5V @ 1.5A
  • Current - Output: 1.5A
  • Current - Quiescent (Iq): -
  • Current - Supply (Max): 2.4mA ~ 70mA
  • PSRR: 50dB (120Hz)
  • Control Features: Enable
  • Protection Features: Over Current, Over Temperature, Reverse Polarity
  • Operating Temperature: -40°C ~ 125°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-WFDFN Exposed Pad
  • Supplier Device Package: 8-DFN (3x3)
封装: 8-WFDFN Exposed Pad
库存7,248
LT3042EMSE#TRPBF
Linear Technology

IC REG LIN POS ADJ 200MA 10MSOP

  • Output Configuration: Positive
  • Output Type: Adjustable
  • Number of Regulators: 1
  • Voltage - Input (Max): 20V
  • Voltage - Output (Min/Fixed): 0V
  • Voltage - Output (Max): 15V
  • Voltage Dropout (Max): 0.35V @ 200mA (Typ)
  • Current - Output: 200mA
  • Current - Quiescent (Iq): -
  • Current - Supply (Max): -
  • PSRR: 117dB ~ 56dB (120Hz ~ 10MHz)
  • Control Features: Current Limit, Enable, Power Good
  • Protection Features: Over Temperature, Reverse Polarity
  • Operating Temperature: -40°C ~ 125°C
  • Mounting Type: Surface Mount
  • Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
  • Supplier Device Package: 10-MSOP-EP
封装: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
库存7,056
hot LT3150CGN#TRPBF
Linear Technology

IC REG CTRLR SGL POS ADJ 16-SSOP

  • Type: Positive Adjustable
  • Number of Outputs: 1
  • Current - Supply: 12mA
  • Voltage - Input: 1.5 V ~ 10 V, 10 V ~ 20 V
  • Operating Temperature: 0°C ~ 70°C
  • Package / Case: 16-SSOP (0.154", 3.90mm Width)
  • Supplier Device Package: 16-SSOP
封装: 16-SSOP (0.154", 3.90mm Width)
库存63,948
LT1949-1EMS8#PBF
Linear Technology

IC REG BOOST SEPIC ADJ 1A 8MSOP

  • Function: Step-Up, Step-Up/Step-Down
  • Output Configuration: Positive
  • Topology: Boost, SEPIC
  • Output Type: Adjustable
  • Number of Outputs: 1
  • Voltage - Input (Min): 1.7V
  • Voltage - Input (Max): 12V
  • Voltage - Output (Min/Fixed): 1.7V
  • Voltage - Output (Max): 28V
  • Current - Output: 1A (Switch)
  • Frequency - Switching: 1.1MHz
  • Synchronous Rectifier: No
  • Operating Temperature: 0°C ~ 70°C (TA)
  • Mounting Type: Surface Mount
  • Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
  • Supplier Device Package: 8-MSOP
封装: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
库存7,152
LT3976HMSE#PBF
Linear Technology

IC REG BUCK ADJ 5A 16-MSOP

  • Function: Step-Down
  • Output Configuration: Positive
  • Topology: Buck
  • Output Type: Adjustable
  • Number of Outputs: 1
  • Voltage - Input (Min): 4.3V
  • Voltage - Input (Max): 40V
  • Voltage - Output (Min/Fixed): 1.197V
  • Voltage - Output (Max): 38.8V
  • Current - Output: 5A
  • Frequency - Switching: 200kHz ~ 2.25MHz
  • Synchronous Rectifier: No
  • Operating Temperature: -40°C ~ 150°C (TJ)
  • Mounting Type: Surface Mount
  • Package / Case: 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
  • Supplier Device Package: 16-MSOP-EP
封装: 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
库存9,060
LTC3868IGN-1#TRPBF
Linear Technology

IC REG CTRLR BUCK 28SSOP

  • Output Type: Transistor Driver
  • Function: Step-Down
  • Output Configuration: Positive
  • Topology: Buck
  • Number of Outputs: 2
  • Output Phases: 2
  • Voltage - Supply (Vcc/Vdd): 4 V ~ 24 V
  • Frequency - Switching: 105kHz ~ 835kHz, 350kHz ~ 535kHz
  • Duty Cycle (Max): 99.4%
  • Synchronous Rectifier: Yes
  • Clock Sync: No
  • Serial Interfaces: -
  • Control Features: Enable, Frequency Control, Power Good, Soft Start
  • Operating Temperature: -40°C ~ 85°C (TA)
  • Package / Case: 28-SSOP (0.154", 3.90mm Width)
  • Supplier Device Package: 28-SSOP
封装: 28-SSOP (0.154", 3.90mm Width)
库存5,616
LTC3809IMSE-1#PBF
Linear Technology

IC REG CTRLR BUCK 10MSOP

  • Output Type: Transistor Driver
  • Function: Step-Down
  • Output Configuration: Positive
  • Topology: Buck
  • Number of Outputs: 1
  • Output Phases: 1
  • Voltage - Supply (Vcc/Vdd): 2.75 V ~ 9.8 V
  • Frequency - Switching: 550kHz
  • Duty Cycle (Max): 100%
  • Synchronous Rectifier: Yes
  • Clock Sync: No
  • Serial Interfaces: -
  • Control Features: Enable, Soft Start, Tracking
  • Operating Temperature: -40°C ~ 85°C (TA)
  • Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
  • Supplier Device Package: 10-MSOP-EP
封装: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
库存7,424
hot LTC3731CG#PBF
Linear Technology

IC REG CTRLR BUCK 36SSOP

  • Output Type: Transistor Driver
  • Function: Step-Down
  • Output Configuration: Positive
  • Topology: Buck
  • Number of Outputs: 3
  • Output Phases: 3
  • Voltage - Supply (Vcc/Vdd): 3.8 V ~ 7 V
  • Frequency - Switching: 225kHz ~ 680kHz
  • Duty Cycle (Max): 98.5%
  • Synchronous Rectifier: Yes
  • Clock Sync: No
  • Serial Interfaces: -
  • Control Features: Enable, Phase Control, Power Good, Soft Start
  • Operating Temperature: 0°C ~ 70°C (TA)
  • Package / Case: 36-SSOP (0.209", 5.30mm Width)
  • Supplier Device Package: 36-SSOP
封装: 36-SSOP (0.209", 5.30mm Width)
库存5,072
REF01CN8#PBF
Linear Technology

IC VREF SERIES 10V 8DIP

  • Reference Type: Series
  • Output Type: Fixed
  • Voltage - Output (Min/Fixed): 10V
  • Voltage - Output (Max): -
  • Current - Output: 20mA
  • Tolerance: ±1%
  • Temperature Coefficient: 65ppm/°C
  • Noise - 0.1Hz to 10Hz: 30µVp-p
  • Noise - 10Hz to 10kHz: -
  • Voltage - Input: 8 V ~ 30 V
  • Current - Supply: 1.6mA
  • Current - Cathode: -
  • Operating Temperature: 0°C ~ 70°C (TA)
  • Mounting Type: Through Hole
  • Package / Case: 8-DIP (0.300", 7.62mm)
  • Supplier Device Package: 8-PDIP
封装: 8-DIP (0.300", 7.62mm)
库存7,376
LT6654BHS6-3#TRMPBF
Linear Technology

IC VREF SERIES 3V TSOT23-6

  • Reference Type: Series
  • Output Type: Fixed
  • Voltage - Output (Min/Fixed): 3V
  • Voltage - Output (Max): -
  • Current - Output: 10mA
  • Tolerance: ±0.1%
  • Temperature Coefficient: 20ppm/°C
  • Noise - 0.1Hz to 10Hz: 1.6ppmp-p
  • Noise - 10Hz to 10kHz: 2ppmrms
  • Voltage - Input: 3.5 V ~ 36 V
  • Current - Supply: 600µA
  • Current - Cathode: -
  • Operating Temperature: -40°C ~ 125°C (TA)
  • Mounting Type: Surface Mount
  • Package / Case: SOT-23-6 Thin, TSOT-23-6
  • Supplier Device Package: TSOT-23-6
封装: SOT-23-6 Thin, TSOT-23-6
库存3,872
LT1027CCN8-5#PBF
Linear Technology

IC VREF SERIES 5V 8DIP

  • Reference Type: Series
  • Output Type: Fixed
  • Voltage - Output (Min/Fixed): 5V
  • Voltage - Output (Max): -
  • Current - Output: 15mA
  • Tolerance: ±0.05%
  • Temperature Coefficient: 3ppm/°C
  • Noise - 0.1Hz to 10Hz: 3µVp-p
  • Noise - 10Hz to 10kHz: 10µVrms
  • Voltage - Input: 8 V ~ 40 V
  • Current - Supply: 3.5mA
  • Current - Cathode: -
  • Operating Temperature: 0°C ~ 70°C (TA)
  • Mounting Type: Through Hole
  • Package / Case: 8-DIP (0.300", 7.62mm)
  • Supplier Device Package: 8-PDIP
封装: 8-DIP (0.300", 7.62mm)
库存8,484
LTC2974IUP#TRPBF
Linear Technology

IC PWR SUPPLY MGR QUAD 64QFN

  • Applications: Monitor, Sequencer, Supervisor
  • Voltage - Input: 4.5 V ~ 15 V
  • Voltage - Supply: 3.3V, 4.5 V ~ 15 V
  • Current - Supply: 10mA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 64-WFQFN Exposed Pad
  • Supplier Device Package: 64-QFN (9x9)
封装: 64-WFQFN Exposed Pad
库存3,984
hot LTC2954CDDB-1#TRPBF
Linear Technology

IC PUSH BUTTON ON/OFF CTRLR 8DFN

  • Applications: Push Button, On/Off Controller
  • Voltage - Input: -
  • Voltage - Supply: 2.7 V ~ 26.4 V
  • Current - Supply: 6µA
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-WFDFN Exposed Pad
  • Supplier Device Package: 8-DFN (3x2)
封装: 8-WFDFN Exposed Pad
库存4,064
hot LTC4257CS8-1#PBF
Linear Technology

IC POE 802.3AF CONTROLLER 8-SOIC

  • Type: Controller (PD)
  • Number of Channels: 1
  • Power - Max: 12.95W
  • Internal Switch(s): Yes
  • Auxiliary Sense: No
  • Standards: 802.3af (PoE)
  • Voltage - Supply: 57V (Max)
  • Current - Supply: 3mA
  • Operating Temperature: 0°C ~ 70°C
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SOIC
封装: 8-SOIC (0.154", 3.90mm Width)
库存16,452
hot LTC4260IGN#TRPBF
Linear Technology

IC HOT SWAP CNTRL I2C 24-SSOP

  • Type: Hot Swap Controller, Monitor
  • Number of Channels: 1
  • Internal Switch(s): No
  • Applications: General Purpose
  • Features: I2C
  • Programmable Features: Auto Retry, Current Limit, Fault Timeout, Latched Fault, OVP, Slew Rate, UVLO
  • Voltage - Supply: 8.5 V ~ 80 V
  • Current - Output (Max): -
  • Operating Temperature: -40°C ~ 85°C
  • Current - Supply: 2mA
  • Mounting Type: Surface Mount
  • Package / Case: 24-SSOP (0.154", 3.90mm Width)
  • Supplier Device Package: 24-SSOP
封装: 24-SSOP (0.154", 3.90mm Width)
库存4,496
LTC4223IGN-2#TRPBF
Linear Technology

IC CNTRLR HOT SWAP DUAL 16-SSOP

  • Type: Hot Swap Controller
  • Number of Channels: 2
  • Internal Switch(s): Both
  • Applications: ATCA, MicroTCA?
  • Features: Auto Retry, Thermal Limit, UVLO
  • Programmable Features: Current Limit, Fault Timeout
  • Voltage - Supply: 2.7 V ~ 14 V
  • Current - Output (Max): -
  • Operating Temperature: -40°C ~ 85°C
  • Current - Supply: 800µA
  • Mounting Type: Surface Mount
  • Package / Case: 16-SSOP (0.154", 3.90mm Width)
  • Supplier Device Package: 16-SSOP
封装: 16-SSOP (0.154", 3.90mm Width)
库存5,152
hot LT1801IDD#PBF
Linear Technology

IC OPAMP GP 70MHZ RRO 8DFN

  • Amplifier Type: General Purpose
  • Number of Circuits: 2
  • Output Type: Rail-to-Rail
  • Slew Rate: 25 V/µs
  • Gain Bandwidth Product: 80MHz
  • -3db Bandwidth: -
  • Current - Input Bias: 25nA
  • Voltage - Input Offset: 75µV
  • Current - Supply: 1.6mA
  • Current - Output / Channel: 50mA
  • Voltage - Supply, Single/Dual (±): 2.3 V ~ 12.6 V, ±1.15 V ~ 6.3 V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-WFDFN Exposed Pad
  • Supplier Device Package: 8-DFN (3x3)
封装: 8-WFDFN Exposed Pad
库存96,000
LT1039CN#PBF
Linear Technology

IC DRIVR/RCVR TRIPLE-RS232 18DIP

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 3/3
  • Duplex: Full
  • Receiver Hysteresis: 400mV
  • Data Rate: -
  • Voltage - Supply: 5 V ~ 15 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Through Hole
  • Package / Case: 18-DIP (0.300", 7.62mm)
  • Supplier Device Package: 18-DIP
封装: 18-DIP (0.300", 7.62mm)
库存13,560
hot LTC1383CS#PBF
Linear Technology

IC TXRX 5V RS232 LOW PWR 16-SOIC

  • Type: Transceiver
  • Protocol: RS232
  • Number of Drivers/Receivers: 2/2
  • Duplex: Full
  • Receiver Hysteresis: 400mV
  • Data Rate: 120KBd
  • Voltage - Supply: 4.5 V ~ 5 V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 16-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 16-SOIC
封装: 16-SOIC (0.154", 3.90mm Width)
库存12,828
LTC2634HMSE-LZ8#TRPBF
Linear Technology

IC DAC 8BIT QUAD 2.5V 10MSOP

  • Number of Bits: 8
  • Number of D/A Converters: 4
  • Settling Time: 3.3µs (Typ)
  • Output Type: Voltage - Buffered
  • Differential Output: No
  • Data Interface: SPI
  • Reference Type: External, Internal
  • Voltage - Supply, Analog: 2.7 V ~ 5.5 V
  • Voltage - Supply, Digital: 2.7 V ~ 5.5 V
  • INL/DNL (LSB): ±0.05, ±0.5 (Max)
  • Architecture: -
  • Operating Temperature: -40°C ~ 125°C
  • Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
  • Supplier Device Package: 10-MSOP-EP
  • Mounting Type: -
封装: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
库存6,592
LTC2668HUJ-12#PBF
Linear Technology

IC DAC 12BIT 16CH 40QFN

  • Number of Bits: 12
  • Number of D/A Converters: 16
  • Settling Time: 15.5µs (Typ)
  • Output Type: Voltage - Buffered
  • Differential Output: No
  • Data Interface: SPI
  • Reference Type: External, Internal
  • Voltage - Supply, Analog: ±4.5 V ~ 15.75 V
  • Voltage - Supply, Digital: 1.71 V ~ 5.5 V
  • INL/DNL (LSB): ±0.2, ±0.05
  • Architecture: -
  • Operating Temperature: -40°C ~ 125°C
  • Package / Case: 40-WFQFN Exposed Pad
  • Supplier Device Package: 40-QFN (6x6)
  • Mounting Type: -
封装: 40-WFQFN Exposed Pad
库存6,224
LTC2321CUFD-14#TRPBF
Linear Technology

IC ADC 14BIT 2MSPS 28QFN

  • Number of Bits: 14
  • Sampling Rate (Per Second): 2M
  • Number of Inputs: 2
  • Input Type: Differential, Pseudo-Differential
  • Data Interface: LVDS - Serial, Serial
  • Configuration: S/H-ADC
  • Ratio - S/H:ADC: 1:1
  • Number of A/D Converters: 2
  • Architecture: SAR
  • Reference Type: External, Internal
  • Voltage - Supply, Analog: 3.13 V ~ 3.47 V, 5V
  • Voltage - Supply, Digital: 3.13 V ~ 3.47 V, 5V
  • Features: Simultaneous Sampling
  • Operating Temperature: 0°C ~ 70°C
  • Package / Case: 28-WFQFN Exposed Pad
  • Supplier Device Package: 28-QFN (4x5)
  • Mounting Type: -
封装: 28-WFQFN Exposed Pad
库存5,200
LTC2367IDE-16#PBF
Linear Technology

IC ADC 16BIT SPI/SRL 500K 16-DFN

  • Number of Bits: 16
  • Sampling Rate (Per Second): 500k
  • Number of Inputs: 1
  • Input Type: Pseudo-Differential
  • Data Interface: SPI
  • Configuration: S/H-ADC
  • Ratio - S/H:ADC: 1:1
  • Number of A/D Converters: 1
  • Architecture: SAR
  • Reference Type: External
  • Voltage - Supply, Analog: 2.375 V ~ 2.625 V
  • Voltage - Supply, Digital: 2.375 V ~ 2.625 V
  • Features: -
  • Operating Temperature: -40°C ~ 85°C
  • Package / Case: 16-WFDFN Exposed Pad
  • Supplier Device Package: 16-DFN (4x3)
  • Mounting Type: -
封装: 16-WFDFN Exposed Pad
库存6,444
LTC2379CMS-18#PBF
Linear Technology

IC ADC 18BIT SPI/SRL 16MSOP

  • Number of Bits: 18
  • Sampling Rate (Per Second): 1.6M
  • Number of Inputs: 1
  • Input Type: Differential
  • Data Interface: SPI
  • Configuration: S/H-ADC
  • Ratio - S/H:ADC: 1:1
  • Number of A/D Converters: 1
  • Architecture: SAR
  • Reference Type: External
  • Voltage - Supply, Analog: 2.375 V ~ 2.625 V
  • Voltage - Supply, Digital: 2.375 V ~ 2.625 V
  • Features: -
  • Operating Temperature: 0°C ~ 70°C
  • Package / Case: 16-TFSOP (0.118", 3.00mm Width)
  • Supplier Device Package: 16-MSOP
  • Mounting Type: -
封装: 16-TFSOP (0.118", 3.00mm Width)
库存6,996
LTC2451CDDB#TRMPBF
Linear Technology

IC ADC 16BIT DELTA SIGMA 8DFN

  • Number of Bits: 16
  • Sampling Rate (Per Second): 60
  • Number of Inputs: 1
  • Input Type: Single Ended
  • Data Interface: I2C
  • Configuration: ADC
  • Ratio - S/H:ADC: -
  • Number of A/D Converters: 1
  • Architecture: Sigma-Delta
  • Reference Type: External
  • Voltage - Supply, Analog: 2.7 V ~ 5.5 V
  • Voltage - Supply, Digital: 2.7 V ~ 5.5 V
  • Features: -
  • Operating Temperature: 0°C ~ 70°C
  • Package / Case: 8-WFDFN Exposed Pad
  • Supplier Device Package: 8-DFN (3x2)
  • Mounting Type: -
封装: 8-WFDFN Exposed Pad
库存32,394
LTC2207IUK-14
Linear Technology

IC ADC

  • Number of Bits: 14
  • Sampling Rate (Per Second): 105M
  • Number of Inputs: 1
  • Input Type: Differential
  • Data Interface: Parallel
  • Configuration: S/H-ADC
  • Ratio - S/H:ADC: 1:1
  • Number of A/D Converters: 1
  • Architecture: Pipelined
  • Reference Type: External, Internal
  • Voltage - Supply, Analog: 3.135 V ~ 3.465 V
  • Voltage - Supply, Digital: 3.135 V ~ 3.465 V
  • Features: PGA
  • Operating Temperature: -40°C ~ 85°C
  • Package / Case: 48-WFQFN Exposed Pad
  • Supplier Device Package: 48-QFN (7x7)
  • Mounting Type: -
封装: 48-WFQFN Exposed Pad
库存2,960
LT3027IDD#TR
Linear Technology

IC REG LINEAR POS ADJ 10DFN

  • Output Configuration: -
  • Output Type: -
  • Number of Regulators: -
  • Voltage - Input (Max): -
  • Voltage - Output (Min/Fixed): -
  • Voltage - Output (Max): -
  • Voltage Dropout (Max): -
  • Current - Output: -
  • Current - Quiescent (Iq): -
  • Current - Supply (Max): -
  • PSRR: -
  • Control Features: -
  • Protection Features: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
封装: -
库存6,400
LTC4331HUFD#PBF
Linear Technology

I2C SLAVE EXTEND OVER DIFFERENTI

  • Type: Differential Link
  • Applications: Industrial, Lighting
  • Mounting Type: Surface Mount
  • Package / Case: 20-WFQFN Exposed Pad
  • Supplier Device Package: 20-QFN (5x4)
封装: 20-WFQFN Exposed Pad
库存6,912
LT1806IS6#TR
Linear Technology

IC OPAMP GP 1 CIRCUIT TSOT23-6

  • Amplifier Type: General Purpose
  • Number of Circuits: 1
  • Output Type: Rail-to-Rail
  • Slew Rate: 140V/µs
  • Gain Bandwidth Product: 325MHz
  • -3db Bandwidth: -
  • Current - Input Bias: 5µA
  • Voltage - Input Offset: 100µV
  • Current - Supply: 11mA
  • Current - Output / Channel: 85mA
  • Voltage - Supply, Single/Dual (±): 2.5V ~ 12.6V, ±1.25V ~ 6.3V
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: SOT-23-6 Thin, TSOT-23-6
  • Supplier Device Package: TSOT-23-6
封装: SOT-23-6 Thin, TSOT-23-6
库存3,648
LT1124CJ8
Linear Technology

DUAL LOW NOISE OA (AV = 1)

  • Amplifier Type: General Purpose
  • Number of Circuits: 2
  • Output Type: -
  • Slew Rate: 4.5V/µs
  • Gain Bandwidth Product: 12.5MHz
  • -3db Bandwidth: -
  • Current - Input Bias: 8nA
  • Voltage - Input Offset: 25µV
  • Current - Supply: 2.3mA
  • Current - Output / Channel: -
  • Voltage - Supply, Single/Dual (±): ±4V ~ 18V
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Through Hole
  • Package / Case: 8-CDIP (0.300", 7.62mm)
  • Supplier Device Package: 8-CDIP
封装: 8-CDIP (0.300", 7.62mm)
库存3,184