- Manufacturer
- Base Part Number
- Circuit
- Factory Lead Time
- JESD-609 Code
- Length
- Moisture Sensitivity Level (MSL)
- Mounting Type
- Number of Pins
- Number of Terminations
- Package / Case
- Packaging
- Part Status
Attribute column
Categories
Logic - Signal Switches, Multiplexers, Decoders
Product | Inventory | Pricing(USD) | Quantity | Datasheet | RoHS | Factory Lead Time | Lifecycle Status | Contact Plating | Mount | Mounting Type | Package / Case | Surface Mount | Number of Pins | Weight | Number of Elements | Usage Level | Operating Temperature | Packaging | Published | Series | JESD-609 Code | Pbfree Code | Part Status | Moisture Sensitivity Level (MSL) | Number of Terminations | Termination | ECCN Code | Type | Resistance | Terminal Finish | Additional Feature | Packing Method | Max Power Dissipation | Voltage - Supply | Terminal Position | Terminal Form | Peak Reflow Temperature (Cel) | Number of Functions | Supply Voltage | Terminal Pitch | Time@Peak Reflow Temperature-Max (s) | Base Part Number | Output | Pin Count | Number of Outputs | Qualification Status | Operating Supply Voltage | Circuit | Polarity | Supply Voltage-Max (Vsup) | Power Supplies | Supply Voltage-Min (Vsup) | Number of Channels | Number of Circuits | Load Capacitance | Number of Ports | Nominal Supply Current | Power Dissipation | Output Current | Number of Bits | Throw Configuration | Propagation Delay | Quiescent Current | Turn On Delay Time | Family | Logic Function | Data Rate | Number of Inputs | Output Characteristics | Halogen Free | Supply Type | Bandwidth | Output Polarity | Max I(ol) | Power Consumption | Prop. Delay@Nom-Sup | Screening Level | High Level Output Current | Propagation Delay (tpd) | Low Level Output Current | Power Supply Current-Max (ICC) | Number of Input Lines | Voltage Supply Source | Independent Circuits | Number of Output Lines | Switching | Switch-on Time-Max | Count Direction | Switch-off Time-Max | Translation | Input Conditioning | Height | Height Seated (Max) | Length | Width | Thickness | Radiation Hardening | REACH SVHC | RoHS Status | Lead Free |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 SN74AHC158N Texas Instruments | 50000 |
| - | 6 Weeks | ACTIVE (Last Updated: 1 day ago) | - | Through Hole | Through Hole | 16-DIP (0.300, 7.62mm) | - | 16 | 951.693491mg | - | - | -40°C~85°C | Tube | - | 74AHC | e4 | - | Active | 1 (Unlimited) | 16 | Through Hole | - | Multiplexer | - | Nickel/Palladium/Gold (Ni/Pd/Au) | - | - | - | 2V~5.5V | DUAL | - | - | 4 | 3.3V | - | - | 74AHC158 | - | 16 | 1 | - | - | 4 x 2:1 | - | 5.5V | - | 2V | 4 | - | 50pF | - | - | - | - | 2 | - | 8.4 ns | - | - | AHC/VHC/H/U/V | - | - | 8 | - | - | Single | 110MHz | INVERTED | 0.05 A | - | 9.5 ns | - | - | - | - | - | - | Single Supply | 1 | - | - | - | - | - | - | - | 5.08mm | - | 19.3mm | 6.35mm | 3.9mm | No | No SVHC | ROHS3 Compliant | Lead Free | ||
 DS25CP104ATSQX/NOPB Texas Instruments | 6847 |
| - | 6 Weeks | ACTIVE (Last Updated: 4 days ago) | - | Surface Mount | Surface Mount | 40-WFQFN Exposed Pad | - | 40 | - | - | - | -40°C~85°C | Tape & Reel (TR) | - | - | e3 | yes | Active | 3 (168 Hours) | 40 | - | - | Crosspoint Switch | - | Matte Tin (Sn) | - | - | - | 3V~3.6V | QUAD | - | 260 | 1 | 3.3V | 0.5mm | - | 25CP104 | SEPARATE OUTPUT | - | - | - | 3.3V | 1 x 4:4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3.125 Gbps | - | - | - | Single | - | - | - | 518W | - | - | - | - | - | - | - | Single Supply | 1 | - | MAKE-BEFORE-BREAK | 20000ns | - | - | - | - | 800μm | - | 6mm | 6mm | 750μm | No | - | ROHS3 Compliant | Lead Free | ||
 74LVC1G157GM,115 Nexperia USA Inc. | 105000 |
| Datasheet | 13 Weeks | - | - | Surface Mount | Surface Mount | 6-XFDFN | - | 6 | - | - | - | -40°C~125°C | Tape & Reel (TR) | 2010 | 74LVC | e3 | - | Active | 1 (Unlimited) | 6 | - | - | Multiplexer | - | Tin (Sn) | - | - | - | 1.65V~5.5V | DUAL | - | 260 | 1 | 3.3V | 0.5mm | 30 | 74LVC1G157 | - | 6 | 1 | - | - | 1 x 2:1 | - | 5.5V | - | - | - | - | - | - | - | 250mW | - | - | - | 2.2 ns | - | - | LVC/LCX/Z | Multiplexer, Mux | - | - | - | - | Single | - | TRUE | - | - | - | - | - | - | - | - | 2 | Single Supply | - | - | - | - | - | - | - | - | - | 0.5mm | - | - | - | No | - | ROHS3 Compliant | Lead Free | ||
 SN74ALS251D Texas Instruments | 411 |
| Datasheet | 6 Weeks | ACTIVE (Last Updated: 2 days ago) | - | Surface Mount | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | - | 16 | 141.690917mg | - | - | 0°C~70°C | Tube | - | 74ALS | e4 | yes | Active | 1 (Unlimited) | 16 | - | EAR99 | Multiplexer | - | Nickel/Palladium/Gold (Ni/Pd/Au) | - | - | - | 4.5V~5.5V | DUAL | GULL WING | 260 | 1 | 5V | - | - | 74ALS251 | - | 16 | 1 | - | 5V | 1 x 8:1 | - | - | 5V | - | - | - | 50pF | - | - | - | - | 8 | - | 24 ns | - | - | ALS | - | - | 8 | 3-STATE | - | Single | 75MHz | COMPLEMENTARY | 0.024 A | - | - | - | - | - | - | - | - | Single Supply | 1 | - | - | - | - | - | - | - | 1.75mm | - | 9.9mm | 3.91mm | 1.58mm | No | No SVHC | ROHS3 Compliant | Lead Free | ||
 SN74CB3Q16210DLR Texas Instruments | 15 | - | - | 6 Weeks | ACTIVE (Last Updated: 1 week ago) | - | Surface Mount | Surface Mount | 48-BSSOP (0.295, 7.50mm Width) | - | 48 | 600.301152mg | - | Automotive grade | -40°C~85°C | Tape & Reel (TR) | - | 74CB | e4 | yes | Active | 1 (Unlimited) | 48 | - | EAR99 | Bus Switch | 9Ohm | Nickel/Palladium/Gold (Ni/Pd/Au) | ALSO OPERATES AT 3.3V SUPPLY | TR | - | 2.3V~3.6V | DUAL | GULL WING | 260 | 2 | 2.5V | 0.635mm | - | 74CB3Q16210 | - | 48 | - | - | - | 10 x 1:1 | Non-Inverting | 3.6V | - | - | - | - | - | 2 | 1mA | - | 30mA | 20 | SPST | 150 ps | 3mA | 9 ns | - | - | - | - | 3-STATE | - | Single | 500MHz | - | - | - | - | AEC-Q100 | -64mA | - | 64mA | - | - | Single Supply | 2 | - | - | - | BIDIRECTIONAL | - | N/A | - | 2.79mm | - | 15.88mm | 7.49mm | 2.59mm | No | - | ROHS3 Compliant | Lead Free | ||
 PI3CH800QEX Diodes Incorporated | 943 |
| Datasheet | 18 Weeks | - | Tin | Surface Mount | Surface Mount | 20-SSOP (0.154, 3.90mm Width) | - | 20 | - | - | Industrial grade | -40°C~85°C TA | Tape & Reel (TR) | - | - | e3 | - | Active | 1 (Unlimited) | 20 | - | EAR99 | Bus Switch | 7Ohm | - | ALSO OPERATES AT 3.3V SUPPLY | - | - | 1.8V 2.5V 3.3V | DUAL | GULL WING | 260 | 8 | 2.5V | 0.635mm | 40 | PI3CH800 | - | - | - | - | - | 1 x 8:8 | - | 2.75V | 2.5/3.3V | 2.25V | - | - | - | 2 | - | - | - | 1 | - | 300 ps | 800μA | - | 3CH | - | - | - | 3-STATE | - | Single | - | TRUE | - | - | - | - | -120mA | - | 120mA | - | - | Single Supply | 1 | - | - | - | - | - | - | - | - | - | 8.65mm | 3.9mm | - | No | - | ROHS3 Compliant | - | ||
 MC74HC251ADG ON Semiconductor | 50000 |
| Datasheet | 51 Weeks | ACTIVE (Last Updated: 3 days ago) | - | Surface Mount | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | - | 16 | - | - | - | -55°C~125°C | Tube | 2006 | 74HC | e3 | yes | Active | 1 (Unlimited) | 16 | - | - | Multiplexer | - | Tin (Sn) | - | RAIL | - | 2V~6V | DUAL | GULL WING | - | 1 | 5V | - | - | 74HC251 | - | 16 | - | - | - | 1 x 8:1 | - | 6V | - | 2V | - | - | 50pF | - | - | 500mW | - | - | - | - | - | - | HC/UH | Multiplexer, Mux | - | - | 3-STATE | Halogen Free | Single | - | COMPLEMENTARY | 0.004 A | - | 56 ns | - | - | - | - | - | 8 | Single Supply | 1 | 2 | - | - | - | - | - | - | - | - | 9.9mm | 3.9mm | - | No | - | ROHS3 Compliant | Lead Free | ||
SN74ALS151D Texas Instruments | 217 |
| - | 6 Weeks | ACTIVE (Last Updated: 3 days ago) | - | Surface Mount | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | - | 16 | 141.690917mg | - | - | 0°C~70°C | Tube | - | 74ALS | e4 | yes | Active | 1 (Unlimited) | 16 | - | - | Multiplexer | - | Nickel/Palladium/Gold (Ni/Pd/Au) | - | - | - | 4.5V~5.5V | DUAL | GULL WING | 260 | 1 | 5V | - | - | 74ALS151 | - | 16 | 1 | - | 5V | 1 x 8:1 | - | - | 5V | - | - | - | 50pF | - | - | - | - | 8 | - | 15 ns | - | - | ALS | - | - | 8 | - | - | Single | 75MHz | COMPLEMENTARY | 0.024 A | - | 24 ns | - | - | - | - | - | - | Single Supply | 1 | - | - | - | - | - | - | - | 1.75mm | - | 9.9mm | 3.91mm | 1.58mm | No | No SVHC | ROHS3 Compliant | Lead Free | ||
 74AC138PC ON Semiconductor | 1665 |
| Datasheet | - | - | - | Through Hole | Through Hole | 16-DIP (0.300, 7.62mm) | - | 16 | - | 1 | - | -40°C~85°C | Tube | 2008 | 74AC | - | yes | Obsolete | 1 (Unlimited) | 16 | - | - | Decoder/Demultiplexer | - | - | - | - | - | 2V~6V | DUAL | - | - | 1 | 3.3V | 2.54mm | - | 74AC138 | - | - | - | - | - | 1 x 3:8 | Inverting | 6V | - | 2V | - | - | - | - | - | - | - | - | - | 16.5 ns | 4μA | 16.5 ns | AC | Decoder | - | 3 | - | - | Single | - | - | - | - | - | - | - | - | - | - | - | Single Supply | - | 8 | - | - | - | - | - | STANDARD | - | - | - | 7.62mm | - | - | No SVHC | RoHS Compliant | Lead Free | ||
SN74AS138D Texas Instruments | In Stock | - | Datasheet | 6 Weeks | ACTIVE (Last Updated: 4 days ago) | - | Surface Mount | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | - | 16 | 141.690917mg | 1 | - | 0°C~70°C | Tube | - | 74AS | e4 | yes | Active | 1 (Unlimited) | 16 | - | EAR99 | Decoder/Demultiplexer | - | Nickel/Palladium/Gold (Ni/Pd/Au) | - | - | - | 4.5V~5.5V | DUAL | GULL WING | 260 | 1 | 5V | - | - | 74AS138 | - | 16 | 8 | - | 5V | 1 x 3:8 | Inverting | - | 5V | - | - | - | 50pF | - | - | - | - | 8 | - | 22 ns | - | 10 ns | AS | Decoder, Demultiplexer | - | 3 | - | - | Single | - | - | 0.02 A | - | - | - | - | - | - | 20mA | - | Single Supply | - | - | - | - | - | - | - | STANDARD | 1.75mm | - | 9.9mm | 3.91mm | 1.58mm | No | No SVHC | ROHS3 Compliant | Lead Free | ||
 SN74HC138DBRG4 Texas Instruments | In Stock | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
 SN74CBTS16212DGGR Texas Instruments | 49 | - | - | 6 Weeks | ACTIVE (Last Updated: 4 days ago) | - | Surface Mount | Surface Mount | 56-TFSOP (0.240, 6.10mm Width) | - | 56 | 252.792698mg | - | - | -40°C~85°C | Cut Tape (CT) | - | 74CBTS | e4 | yes | Active | 1 (Unlimited) | 56 | - | EAR99 | Bus FET Exchange Switch | 6Ohm | Nickel/Palladium/Gold (Ni/Pd/Au) | TTL COMPATIBLE BUS SWITCH | TR | - | 4.5V~5.5V | DUAL | GULL WING | 260 | 1 | 5V | 0.5mm | NOT SPECIFIED | 74CBTS16212 | - | 56 | - | Not Qualified | 5V | 12 x 2:2 | Non-Inverting | - | 5V | 4V | - | - | 50pF | 4 | 250mA | - | 64mA | 24 | DPDT | 250 ps | 3μA | 10.4 ns | CBT/FST/QS/5C/B | - | - | 24 | 3-STATE | - | Single | 200MHz | - | - | - | 0.25 ns | - | -128mA | - | 128mA | 0.003mA | - | Single Supply | 1 | - | - | - | BIDIRECTIONAL | - | N/A | - | 1.2mm | - | 14mm | 6.1mm | 1.15mm | - | - | ROHS3 Compliant | Lead Free | ||
 NB7V72MMNTXG ON Semiconductor | 45 |
| Datasheet | 4 Weeks | ACTIVE (Last Updated: 1 day ago) | - | Surface Mount | Surface Mount | 16-VFQFN Exposed Pad | - | 16 | - | - | - | -40°C~85°C | Tape & Reel (TR) | 2002 | GigaComm™ | - | yes | Active | 1 (Unlimited) | 16 | - | - | Crosspoint Switch | - | Nickel/Gold/Palladium (Ni/Au/Pd) | - | - | - | 1.71V~2.625V | QUAD | - | - | 1 | 1.8V | 0.5mm | - | 7V72 | SEPARATE OUTPUT | 16 | - | - | 2.5V | 1 x 2:2 | - | 2.625V | - | - | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | 6.5 Gbps | - | - | Halogen Free | Single | - | - | - | - | - | - | - | - | - | - | - | Single Supply | 1 | - | - | - | - | - | - | - | - | - | 3mm | 3mm | - | No | - | ROHS3 Compliant | Lead Free | ||
 SN65LVDS250DBTRG4 Texas Instruments | 45 |
| Datasheet | 6 Weeks | ACTIVE (Last Updated: 4 days ago) | - | - | Surface Mount | 38-TFSOP (0.173, 4.40mm Width) | YES | 38 | 120.003531mg | - | - | -40°C~85°C | Tape & Reel (TR) | - | 65LVDS | e4 | yes | Active | 2 (1 Year) | 38 | - | - | Crosspoint Switch | - | Nickel/Palladium/Gold (Ni/Pd/Au) | - | - | - | 3V~3.6V | DUAL | GULL WING | 260 | 1 | 3.3V | 0.5mm | - | 65LVDS250 | SEPARATE OUTPUT | 38 | - | - | 3.3V | 1 x 4:4 | - | 3.6V | - | 3V | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | 2.5 Gbps | - | - | - | Single | - | - | - | - | - | - | - | - | - | - | - | Single Supply | 1 | - | - | 300ns | - | 6ns | - | - | 1.2mm | - | 9.7mm | 4.4mm | 1mm | No | - | ROHS3 Compliant | Lead Free | ||
 7WBD383USG ON Semiconductor | 4340 |
| Datasheet | 7 Weeks | ACTIVE (Last Updated: 1 day ago) | Tin | - | Surface Mount | 8-VFSOP (0.091, 2.30mm Width) | YES | 8 | - | - | - | -55°C~125°C | Tape & Reel (TR) | 2006 | - | - | yes | Active | 1 (Unlimited) | 8 | - | - | Bus FET Exchange Switch | 70Ohm | Nickel/Gold/Palladium (Ni/Au/Pd) | - | - | 498mW | 4V~5.5V | DUAL | GULL WING | 260 | 1 | 4.5V | 0.5mm | 40 | 7WBD383 | - | 8 | - | - | 5V | 2 x 1:1 | - | - | 5V | 4V | - | - | - | 2 | - | - | - | 2 | - | 250 ps | 1mA | 4.8 ns | CBT/FST/QS/5C/B | - | - | 2 | - | Halogen Free | Single | - | TRUE | - | - | - | - | -128mA | - | 128mA | - | - | Single Supply | 1 | - | - | - | - | - | - | - | - | 0.9mm | - | - | - | No | - | ROHS3 Compliant | Lead Free | ||
 MC100EP56DT ON Semiconductor | 124 | - | Datasheet | - | - | - | Surface Mount | Surface Mount | 20-TSSOP (0.173, 4.40mm Width) | - | 20 | - | - | - | -40°C~85°C | Tube | 2008 | 100EP | e4 | yes | Obsolete | 1 (Unlimited) | 20 | - | - | Differential Digital Multiplexer | - | Nickel/Palladium/Gold (Ni/Pd/Au) | NECL MODE OPERATING RANGE: VCC = 0 V WITH VEE = -3.0 V TO -5.5 V | RAIL | - | ±3V~5.5V | - | GULL WING | 260 | 2 | 3.3V | 0.65mm | 40 | 100EP56 | - | 20 | 1 | - | - | 2 x 2:1 | Non-Inverting | 5.5V | -4.5V | 3V | - | 2 | - | - | - | - | - | - | DPST | 470 ps | 63mA | - | - | Multiplexer | - | - | SERIES-RESISTOR | - | Dual | - | - | - | - | 0.5 ns | - | -50mA | - | 50mA | 80mA | - | Dual Supply | 1 | - | - | - | - | - | - | - | - | - | 6.5mm | 4.4mm | - | No | - | Non-RoHS Compliant | Lead Free | ||
 PI3B3251LE Diodes Incorporated | 1455 |
| Datasheet | 18 Weeks | - | - | - | Surface Mount | 16-TSSOP (0.173, 4.40mm Width) | YES | 16 | - | - | - | -40°C~85°C | Tube | 2009 | - | e3 | - | Active | 1 (Unlimited) | 16 | - | EAR99 | Multiplexer/Demultiplexer | - | MATTE TIN (787) | - | - | - | 3V~3.6V | DUAL | GULL WING | 260 | 1 | 3.3V | 0.65mm | 40 | - | - | - | - | - | 3.3V | 1 x 8:1 | - | 3.63V | - | 2.97V | - | - | - | 2 | - | - | - | 8 | - | - | - | - | CBTLV/3B | Demultiplexer, Multiplexer | - | - | 3-STATE | - | - | - | TRUE | - | - | - | - | -120mA | 0.25 ns | 120mA | - | - | Single Supply | 1 | - | - | - | - | - | - | - | - | - | 5mm | 4.4mm | - | No | - | ROHS3 Compliant | - | ||
 74AUP1G157GW,125 Nexperia USA Inc. | 2997 |
| Datasheet | 4 Weeks | - | Tin | Surface Mount | Surface Mount | 6-TSSOP, SC-88, SOT-363 | - | 6 | - | - | - | -40°C~125°C | Tape & Reel (TR) | - | 74AUP | e3 | - | Active | 1 (Unlimited) | 6 | - | - | Multiplexer | - | - | - | - | - | 0.8V~3.6V | DUAL | GULL WING | 260 | 1 | 1.2V | - | 30 | 74AUP1G157 | - | 6 | 1 | - | - | 1 x 2:1 | - | - | - | 0.8V | - | - | - | - | - | 250mW | - | - | - | 8.9 ns | - | - | AUP/ULP/V | Multiplexer, Mux | - | - | - | - | Single | - | TRUE | - | - | - | - | - | - | - | - | 2 | Single Supply | - | - | - | - | - | - | - | - | - | - | - | - | - | No | - | ROHS3 Compliant | Lead Free | ||
 SN74CBTLV3383PW Texas Instruments | 100 | - | Datasheet | 6 Weeks | ACTIVE (Last Updated: 3 days ago) | - | Surface Mount | Surface Mount | 24-TSSOP (0.173, 4.40mm Width) | - | 24 | 89.499445mg | - | - | -40°C~85°C | Tube | - | 74CBTLV | e4 | yes | Active | 1 (Unlimited) | 24 | - | EAR99 | Bus FET Exchange Switch | 27Ohm | Nickel/Palladium/Gold (Ni/Pd/Au) | TTL COMPATIBLE BUS SWITCH | - | - | 2.3V~3.6V | DUAL | GULL WING | 260 | 1 | 2.5V | 0.65mm | - | 74CBTLV3383 | - | 24 | - | - | - | 5 x 2:2 | - | 3.6V | 2.5/3.3V | 2.3V | - | - | - | 4 | - | - | 64mA | 5 | - | 250 ps | 10μA | 6 ns | CBTLV/3B | - | - | 10 | 3-STATE | - | Single | - | TRUE | - | - | 0.25 ns | - | -128mA | - | 128mA | - | - | Single Supply | 1 | - | - | - | BIDIRECTIONAL | - | N/A | - | 1.2mm | - | 7.8mm | 4.4mm | 1mm | No | No SVHC | ROHS3 Compliant | Lead Free | ||
 MC74ACT157DTR2G ON Semiconductor | 40623 |
| Datasheet | 45 Weeks | ACTIVE (Last Updated: 2 days ago) | - | Surface Mount | Surface Mount | 16-TSSOP (0.173, 4.40mm Width) | - | 16 | - | - | - | -40°C~85°C | Tape & Reel (TR) | 2006 | 74ACT | e4 | yes | Active | 1 (Unlimited) | 16 | - | - | Multiplexer | - | Nickel/Palladium/Gold (Ni/Pd/Au) | TTL COMPATIBLE INPUTS | TAPE AND REEL | - | 4.5V~5.5V | DUAL | GULL WING | 260 | 4 | 5V | 0.65mm | 40 | 74ACT157 | - | 16 | 1 | - | 5V | 4 x 2:1 | - | - | 5V | - | - | - | 50pF | - | - | - | - | 4 | DPST | 7.5 ns | - | - | ACT | Multiplexer, Mux | - | 8 | - | Halogen Free | Single | - | TRUE | - | - | - | - | - | - | - | - | 2 | Single Supply | 1 | - | - | - | - | - | - | - | - | - | 5mm | - | - | No | - | ROHS3 Compliant | Lead Free |