- Number of Functions
- Number of Channels
- Terminal Form
- Terminal Position
- Pin Count
- JESD-609 Code
- Switch-on Time-Max
- Surface Mount
- Qualification Status
- Terminal Pitch
- Terminal Finish
- Neg Supply Voltage-Nom (Vsup)
Attribute column
Manufacturer
Maxim Integrated Interface - Analog Switches, Multiplexers, Demultiplexers
Product | Inventory | Pricing(USD) | Quantity | Datasheet | RoHS | Factory Lead Time | Contact Plating | Mount | Mounting Type | Package / Case | Surface Mount | Number of Pins | Weight | Turn Off Delay Time | Operating Temperature | Packaging | Published | JESD-609 Code | Pbfree Code | Part Status | Moisture Sensitivity Level (MSL) | Number of Terminations | ECCN Code | Resistance | Terminal Finish | Additional Feature | Max Power Dissipation | Terminal Position | Terminal Form | Peak Reflow Temperature (Cel) | Number of Functions | Supply Voltage | Terminal Pitch | Reach Compliance Code | Time@Peak Reflow Temperature-Max (s) | Base Part Number | Output | Pin Count | JESD-30 Code | Qualification Status | Operating Supply Voltage | Polarity | Power Supplies | Number of Channels | Number of Circuits | Max Supply Voltage | Min Supply Voltage | Analog IC - Other Type | Operating Supply Current | Nominal Supply Current | Max Supply Current | Number of Bits | Throw Configuration | Propagation Delay | Turn On Delay Time | Logic Function | Voltage - Supply, Single/Dual (±) | Supply Type | Supply Current-Max (Isup) | Neg Supply Voltage-Nom (Vsup) | Max Dual Supply Voltage | -3db Bandwidth | On-State Resistance (Max) | Min Dual Supply Voltage | High Level Output Current | Dual Supply Voltage | Multiplexer/Demultiplexer Circuit | Off-state Isolation-Nom | Current - Leakage (IS(off)) (Max) | Channel Capacitance (CS(off), CD(off)) | On-state Resistance Match-Nom | Switch Circuit | Switch Time (Ton, Toff) (Max) | Charge Injection | Channel-to-Channel Matching (ΔRon) | Crosstalk | Switching | Switch-on Time-Max | Switch-off Time-Max | Voltage - Supply, Single (V+) | Drain to Source Resistance | Normal Position | Signal Current-Max | Voltage - Supply, Dual (V±) | Height | Height Seated (Max) | Length | Width | Radiation Hardening | REACH SVHC | RoHS Status | Lead Free |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 MAX4617CPE Maxim Integrated | 78956 | - | Datasheet | 6 Weeks | - | - | Through Hole | 16-DIP (0.300, 7.62mm) | - | 16 | - | - | 0°C~70°C TA | Tube | 2012 | e3 | yes | Active | 1 (Unlimited) | - | EAR99 | - | Matte Tin (Sn) | - | - | - | - | NOT SPECIFIED | - | - | - | - | NOT SPECIFIED | MAX4617 | - | 16 | - | - | - | - | - | - | 1 | - | - | SINGLE-ENDED MULTIPLEXER | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 10Ohm | - | - | - | 8:1 | - | 1nA | 5pF 27pF | - | - | 15ns, 10ns | 3pC | 200m Ω | - | - | - | - | 2V~5.5V | - | - | - | - | - | - | - | - | - | - | ROHS3 Compliant | - | ||
 MAX4685EUB Maxim Integrated | 59 |
| Datasheet | 6 Weeks | - | Surface Mount | Surface Mount | 10-TFSOP, 10-MSOP (0.118, 3.00mm Width) | - | 10 | - | 40 ns | -40°C~85°C TA | Tube | 2009 | e3 | yes | Active | 1 (Unlimited) | 10 | EAR99 | 800mOhm | Matte Tin (Sn) | - | 444mW | DUAL | GULL WING | 260 | 2 | 3V | 0.5mm | - | 30 | MAX4685 | SEPARATE OUTPUT | 10 | - | - | - | - | 3V | 2 | - | 5.5V | 1.8V | - | - | 40pA | 200nA | - | - | - | 60 ns | - | - | Single | - | - | - | - | 800mOhm | - | - | - | 2:1 | 64 dB | 1nA | 84pF 37pF | 0.06Ohm | SPDT | 50ns, 30ns | 200pC | 60m Ω | - | BREAK-BEFORE-MAKE | 50ns | 30ns | 1.8V~5.5V | - | - | - | - | 950μm | - | 3.05mm | 3.05mm | No | Unknown | ROHS3 Compliant | Lead Free | ||
 DG408CY Maxim Integrated | 550 | - | Datasheet | 6 Weeks | Tin | Surface Mount | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | - | 16 | - | 300 ns | 0°C~70°C TA | Tube | 2009 | e3 | yes | Active | 1 (Unlimited) | 16 | EAR99 | 175Ohm | - | - | 696mW | - | GULL WING | 260 | 1 | 15V | - | - | 30 | DG408 | - | 16 | - | - | 28V | - | - | 8 | 1 | 30V | 5V | - | 500μA | - | - | - | DPST | 175 ns | 600 ns | Multiplexer | 5V~30V ±5V~20V | Dual, Single | 2mA | -15V | 20V | - | 100Ohm | 5V | 30mA | - | 8:1 | 75 dB | 500pA | 3pF 26pF | 1.5Ohm | - | 150ns, 150ns | 2pC | 1.5 Ω | - | BREAK-BEFORE-MAKE | 225ns | - | - | - | - | 0.02A | - | 1.5mm | - | 10mm | 4mm | No | Unknown | ROHS3 Compliant | Lead Free | ||
DG409DY Maxim Integrated | 16 | - | Datasheet | 6 Weeks | - | - | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | YES | 16 | - | - | -40°C~85°C TA | Tube | 2009 | e3 | yes | Active | 1 (Unlimited) | 16 | EAR99 | 50Ohm | Matte Tin (Sn) | - | - | DUAL | GULL WING | 260 | 2 | 15V | - | - | 30 | DG409 | - | 16 | - | Not Qualified | - | - | - | 4 | 2 | - | - | DIFFERENTIAL MULTIPLEXER | - | - | - | - | - | - | - | - | 5V~30V ±5V~20V | - | - | -15V | - | - | 100Ohm | - | - | - | 4:1 | 75 dB | 500pA | 3pF 14pF | 1.5Ohm | SP4T | 150ns, 150ns | 2pC | 1.5 Ω | - | BREAK-BEFORE-MAKE | 150ns | 150ns | - | - | - | - | - | - | 1.75mm | 9.9mm | 3.9mm | - | - | ROHS3 Compliant | Lead Free | ||
 MAX14758EUE Maxim Integrated | 83 |
| Datasheet | 6 Weeks | - | Surface Mount | Surface Mount | 16-TSSOP (0.173, 4.40mm Width) | - | 16 | 172.98879mg | 3 μs | -40°C~85°C TA | Tube | 2011 | e3 | yes | Active | 1 (Unlimited) | 16 | EAR99 | 10Ohm | Matte Tin (Sn) | - | 889mW | - | GULL WING | - | 4 | - | 0.65mm | - | - | MAX14758 | SEPARATE OUTPUT | 16 | - | - | - | - | - | 2 | 4 | 70V | 10V | - | 500μA | - | 800μA | - | SPST | - | 60 μs | - | 10V~70V ±10V~35V | Dual, Single | - | - | 35V | 145MHz | 10Ohm | 10V | - | - | 1:1 | 65 dB | 2.5nA | 35pF | 0.3Ohm | SPST - NO/NC | 60μs, 3μs | 580pC | 300m Ω | - | BREAK-BEFORE-MAKE | 60000ns | 3000ns | - | - | - | - | - | - | 1.1mm | 5mm | - | No | Unknown | ROHS3 Compliant | - | ||
MAX4509ESE Maxim Integrated | 12 | - | Datasheet | 6 Weeks | - | - | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | YES | 16 | - | - | -40°C~85°C TA | Tube | 2008 | e3 | yes | Active | 1 (Unlimited) | 16 | EAR99 | - | Matte Tin (Sn) | FAULT PROTECTED | - | DUAL | GULL WING | 260 | 2 | 15V | - | - | 30 | MAX4509 | - | 16 | - | Not Qualified | - | - | - | 4 | 2 | - | - | SINGLE-ENDED MULTIPLEXER | - | - | - | - | - | - | - | - | 9V~36V ±4.5V~20V | - | 0.75mA | -15V | - | - | 400Ohm | - | - | - | 4:1 | 70 dB | 500pA | 10pF 14pF | 15Ohm | SP4T | 275ns, 200ns | 2pC | 15 Ω (Max) | - | BREAK-BEFORE-MAKE | - | - | - | - | - | - | - | - | 1.75mm | 9.9mm | 3.9mm | - | - | ROHS3 Compliant | - | ||
MAX308EUE Maxim Integrated | 54 | - | Datasheet | 6 Weeks | - | Surface Mount | Surface Mount | 16-TSSOP (0.173, 4.40mm Width) | - | 16 | - | 300 ns | -40°C~85°C TA | Tube | 2002 | e3 | yes | Active | 1 (Unlimited) | 16 | EAR99 | 175Ohm | Matte Tin (Sn) | - | 457mW | - | GULL WING | 260 | 1 | 15V | 0.65mm | - | 30 | MAX308 | - | 16 | - | - | 28V | - | - | 8 | 1 | 30V | 5V | - | 500μA | - | - | - | DPST | 175 ns | 600 ns | Multiplexer | 5V~30V ±5V~20V | Dual, Single | - | -15V | 20V | - | 100Ohm | 5V | - | - | 8:1 | 75 dB | 750pA | 3pF 26pF | 1.5Ohm | - | 150ns, 150ns | 2pC | 1.5 Ω | - | BREAK-BEFORE-MAKE | - | - | - | - | - | 0.03A | - | 950μm | - | 5.1mm | 4.5mm | No | Unknown | ROHS3 Compliant | Lead Free | ||
MAX327CSE Maxim Integrated | In Stock | - | Datasheet | 6 Weeks | - | - | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | YES | 16 | - | - | 0°C~70°C TA | Tube | 1996 | e3 | yes | Active | 1 (Unlimited) | 16 | EAR99 | - | Tin (Sn) | - | - | DUAL | GULL WING | 260 | 4 | 15V | 1.27mm | - | 30 | MAX327 | SEPARATE OUTPUT | 16 | - | Not Qualified | - | - | +-15V | 1 | 4 | - | - | - | - | - | - | - | - | - | - | - | 10V~30V ±5V~18V | - | - | -15V | - | - | 3.5kOhm | - | - | - | 1:1 | 70 dB | 10pA | 1.7pF 1.7pF | 75Ohm | SPST - NO | 1μs, 500ns | 2pC | 175 Ω | - | BREAK-BEFORE-MAKE | 1000ns | 500ns | - | - | NO | - | - | - | 1.75mm | 9.9mm | 3.9mm | - | - | ROHS3 Compliant | Lead Free | ||
MAX313ESE Maxim Integrated | 25000 | - | Datasheet | 6 Weeks | Tin | Surface Mount | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | - | 16 | - | 185 ns | -40°C~85°C TA | Tube | 2002 | e3 | yes | Active | 1 (Unlimited) | 16 | EAR99 | 10Ohm | - | - | 696mW | - | GULL WING | 260 | 4 | 15V | 1.27mm | - | 30 | MAX313 | - | 16 | - | - | 20V | - | - | 1 | 4 | 30V | 4.5V | - | - | 100pA | 100pA | - | SPST | - | 225 ns | - | 4.5V~30V ±4.5V~20V | Dual, Single | - | -15V | 20V | - | 10Ohm | 4.5V | 100mA | 15V | 1:1 | 65 dB | 500pA | 15pF 15pF | 0.3Ohm | SPST - NO | 225ns, 185ns | 20pC | 300m Ω | - | BREAK-BEFORE-MAKE | 275ns | 235ns | - | 10Ohm | NC | - | - | 1.5mm | - | 10mm | 4mm | No | No SVHC | ROHS3 Compliant | Lead Free | ||
 MAX333AEPP Maxim Integrated | 633 | - | Datasheet | 6 Weeks | Tin | Through Hole | Through Hole | 20-DIP (0.300, 7.62mm) | - | 8 | - | 175 ns | -40°C~85°C TA | Tube | 1999 | e3 | yes | Active | 1 (Unlimited) | 20 | EAR99 | 35Ohm | - | - | 889mW | - | - | 260 | 4 | 15V | - | - | 30 | MAX333 | - | 20 | R-PDIP-T20 | - | 20V | - | - | 1 | 4 | 30V | 10V | - | 1μA | 50μA | 250μA | - | - | - | 145 ns | - | 10V~30V ±4.5V~20V | Dual, Single | - | -15V | 20V | - | 45Ohm | 4.5V | 20mA | - | 2:1 | 72 dB | 250pA | 5pF | 2Ohm | SPDT | 175ns, 145ns | 2pC | 2 Ω (Max) | - | - | - | - | - | - | - | - | - | - | - | 26.16mm | 7.62mm | No | - | ROHS3 Compliant | Contains Lead | ||
 MAX4659ESA Maxim Integrated | 2500 | - | Datasheet | 6 Weeks | - | - | Surface Mount | 8-SOIC (0.154, 3.90mm Width) | YES | 8 | - | - | -40°C~85°C TA | Tube | 2007 | e3 | yes | Active | 1 (Unlimited) | 8 | EAR99 | - | Matte Tin (Sn) | - | - | DUAL | GULL WING | 260 | 1 | 15V | - | - | 30 | MAX4659 | - | 8 | - | Not Qualified | - | - | 9/40/+-4.5/+-20V | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | 9V~40V ±4.5V~20V | - | - | -15V | - | 225MHz | 25Ohm | - | - | - | 2:1 | 70 dB | 1nA | 6pF | 0.4Ohm | SPDT | - | 1.5pC | 400m Ω | - | BREAK-BEFORE-MAKE | - | - | - | - | - | - | - | - | - | 4.9mm | - | - | - | ROHS3 Compliant | - | ||
 MAX333AEWP Maxim Integrated | 1 | - | Datasheet | 6 Weeks | - | Surface Mount | Surface Mount | 20-SOIC (0.295, 7.50mm Width) | - | 20 | 800.987426mg | 145 ns | -40°C~85°C TA | Tube | 1999 | e3 | yes | Active | 1 (Unlimited) | 20 | EAR99 | 35Ohm | Matte Tin (Sn) | - | 800mW | - | GULL WING | 260 | 4 | 15V | 1.27mm | - | 30 | MAX333 | - | 20 | - | - | - | - | - | 4 | - | 30V | 10V | - | 1μA | - | 250μA | - | - | - | 175 ns | - | 10V~30V ±4.5V~20V | Dual, Single | - | -15V | 20V | - | 45Ohm | 4.5V | 20mA | 15V | 2:1 | 72 dB | 250pA | 5pF | 2Ohm | SPDT | 175ns, 145ns | 2pC | 2 Ω (Max) | - | - | - | - | - | - | - | - | - | 2.35mm | - | 13mm | 7.6mm | No | Unknown | ROHS3 Compliant | Lead Free | ||
 MAX4625EUT T Maxim Integrated | 2500 | - | Datasheet | 6 Weeks | Tin | Surface Mount | Surface Mount | SOT-23-6 | - | 6 | 36.003894mg | 50 ns | -40°C~85°C TA | Tape & Reel (TR) | 2001 | e3 | yes | Active | 1 (Unlimited) | 6 | EAR99 | 1Ohm | - | IT CAN ALSO OPERATE WITH 3 V SUPPLY | 571mW | DUAL | GULL WING | 260 | 1 | 5V | 0.95mm | - | 30 | MAX4625 | - | 6 | - | - | 5V | Non-Inverting | - | 1 | 1 | 5.5V | 1.8V | - | - | 10μA | 10μA | 4 | - | - | 50 ns | - | - | Single | - | - | - | - | 1Ohm | - | 200mA | - | 2:1 | 57 dB | 2nA | 32pF | 0.06Ohm | SPDT | 50ns, 50ns | 65pC | 60m Ω | - | MAKE-BEFORE-BREAK | - | - | 1.8V~5.5V | 1Ohm | - | - | - | - | - | 2.9mm | - | No | - | ROHS3 Compliant | Lead Free | ||
 MAX4544EUA T Maxim Integrated | In Stock | - | Datasheet | 6 Weeks | - | Surface Mount | Surface Mount | 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) | - | 8 | - | 75 ns | -40°C~85°C TA | Tape & Reel (TR) | 2002 | e3 | yes | Active | 1 (Unlimited) | 8 | EAR99 | 60Ohm | Matte Tin (Sn) | - | 727mW | DUAL | GULL WING | 260 | 1 | 5V | 0.65mm | - | 30 | MAX4544 | - | 8 | - | - | - | - | 3.3/5V | 1 | 1 | 12V | 2.7V | - | - | 1μA | 1μA | - | - | - | 100 ns | - | - | Single | - | - | - | - | 60Ohm | - | - | - | 2:1 | 76 dB | 100pA | 8pF 8pF | 0.8Ohm | SPDT | 100ns, 75ns | 1pC | 800m Ω | -90dB @ 1MHz | BREAK-BEFORE-MAKE | - | - | 2.7V~12V | - | - | - | - | - | - | 3mm | 3mm | No | - | ROHS3 Compliant | - | ||
MAX4581ESE T Maxim Integrated | In Stock |
| Datasheet | 6 Weeks | Tin | Surface Mount | Surface Mount | 16-SOIC (0.154, 3.90mm Width) | - | 16 | - | 200 ns | -40°C~85°C TA | Tape & Reel (TR) | 2012 | e3 | yes | Active | 1 (Unlimited) | 16 | EAR99 | 80Ohm | - | - | 696mW | - | GULL WING | 260 | 1 | 5V | - | - | 30 | MAX4581 | - | 16 | - | - | 9V | - | 3/5/+-5V | 8 | 1 | 12V | 2V | - | 1μA | - | - | - | - | 200 ns | 300 ns | Multiplexer | 2V~12V ±2V~6V | Dual, Single | - | -5V | 6V | - | 80Ohm | 2V | 20mA | - | 8:1 | 73 dB | 1nA | 4pF 18pF | 1Ohm | - | 200ns, 100ns | 0.5pC | 1 Ω | - | BREAK-BEFORE-MAKE | - | - | - | - | - | 0.02A | - | - | - | 9.9mm | 3.9mm | No | - | ROHS3 Compliant | - | ||
 DG307ACWE Maxim Integrated | 44 | - | Datasheet | - | - | Surface Mount | Surface Mount | 16-SOIC (0.295, 7.50mm Width) | - | - | - | - | 0°C~70°C TA | Tube | 2004 | e0 | no | Obsolete | 1 (Unlimited) | 16 | EAR99 | 50Ohm | Tin/Lead (Sn85Pb15) | - | - | - | GULL WING | 240 | 2 | 15V | - | - | 20 | DG307A | SEPARATE OUTPUT | 16 | R-PDSO-G16 | - | - | - | - | 1 | 2 | 36V | 10V | - | 1nA | - | - | - | - | - | - | - | - | Dual | - | -15V | 18V | - | 50Ohm | 5V | - | - | 2:1 | 62 dB | 5nA | 14pF 14pF | - | SPDT | 250ns, 150ns | 12pC | - | - | BREAK-BEFORE-MAKE | - | 150ns | - | - | - | - | ±5V~18V | - | - | 10.3mm | 7.5mm | No | - | Non-RoHS Compliant | Contains Lead | ||
MAX391CUE Maxim Integrated | In Stock | - | Datasheet | - | - | Surface Mount | Surface Mount | 16-TSSOP (0.173, 4.40mm Width) | - | 16 | - | - | 0°C~70°C TA | Tube | 2007 | e0 | no | Obsolete | 1 (Unlimited) | 16 | EAR99 | 35Ohm | Tin/Lead (Sn85Pb15) | - | - | - | GULL WING | 245 | 4 | 5V | 0.65mm | - | - | MAX391 | SEPARATE OUTPUT | 16 | - | - | - | - | 3.3/5/+-5V | 1 | 4 | 15V | 3V | - | 1μA | - | - | - | SPST | - | - | - | 3V~15V ±3V~8V | Dual, Single | - | -5V | 8V | - | 35Ohm | 3V | - | - | 1:1 | 72 dB | 100pA | 9pF 9pF | 0.3Ohm | SPST - NC | 130ns, 75ns | 2pC | 300m Ω | - | BREAK-BEFORE-MAKE | 130ns | 75ns | - | - | NO | - | - | - | 1.1mm | 5mm | - | No | - | Non-RoHS Compliant | Contains Lead | ||
 MAX4534EPD Maxim Integrated | 500 | - | Datasheet | - | - | Through Hole | Through Hole | 14-DIP (0.300, 7.62mm) | - | - | - | - | -40°C~85°C TA | Tube | 2005 | e0 | no | Obsolete | 1 (Unlimited) | 14 | EAR99 | 400Ohm | - | - | - | - | - | 240 | 1 | 15V | 2.54mm | - | 20 | MAX4534 | - | 14 | - | - | - | - | - | 4 | 1 | 36V | 9V | - | - | - | - | - | 4PST | - | - | Multiplexer | 9V~36V ±4.5V~20V | Dual, Single | 0.375mA | -15V | 20V | - | 400Ohm | 4.5V | - | - | 4:1 | 62 dB | 500pA | 5pF 6.5pF | 2Ohm | SP4T | 275ns, 200ns | 1pC | 2 Ω | - | BREAK-BEFORE-MAKE | 275ns | 200ns | - | - | - | 0.03A | - | - | 4.572mm | - | 7.62mm | No | - | Non-RoHS Compliant | Contains Lead | ||
 MAX4543EPA Maxim Integrated | In Stock | - | Datasheet | - | - | Through Hole | Through Hole | 8-DIP (0.300, 7.62mm) | - | - | - | - | -40°C~85°C TA | Tube | 2007 | e0 | no | Obsolete | 1 (Unlimited) | 8 | - | 60Ohm | Tin/Lead (Sn85Pb15) | - | - | DUAL | - | 240 | 2 | 5V | - | not_compliant | 20 | MAX4543 | SEPARATE OUTPUT | 8 | R-PDIP-T8 | Not Qualified | - | - | 3.3/5V | 1 | 2 | - | - | - | - | - | - | - | SPST | - | - | - | - | Single | - | - | - | - | 60Ohm | - | - | - | 1:1 | 76 dB | 100pA | 8pF 8pF | 0.8Ohm | SPST - NO/NC | 100ns, 75ns | 1pC | 800m Ω | - | BREAK-BEFORE-MAKE | 100ns | 75ns | 2.7V~12V | - | - | - | - | - | - | 9.375mm | - | - | - | Non-RoHS Compliant | Contains Lead | ||
MAX4553CPE Maxim Integrated | 20 | - | Datasheet | - | - | Through Hole | Through Hole | 16-DIP (0.300, 7.62mm) | - | - | - | - | 0°C~70°C TA | Tube | 1999 | e0 | no | Obsolete | 1 (Unlimited) | 16 | EAR99 | 120Ohm | Tin/Lead (Sn85Pb15) | - | - | - | - | 240 | 4 | 5V | - | not_compliant | 20 | MAX4553 | SEPARATE OUTPUT | 16 | R-PDIP-T16 | Not Qualified | - | - | 3/5/+-5V | 1 | 4 | - | - | - | 1μA | - | - | - | SPST | - | - | - | 2V~12V ±2V~6V | Dual, Single | - | -5V | - | - | 120Ohm | - | - | - | 1:1 | 90 dB | 1nA | 3.5pF 3pF | 1Ohm | SPST - NO/NC | 110ns, 90ns | 2pC | 1 Ω | - | BREAK-BEFORE-MAKE | 125ns | 100ns | - | - | - | - | - | - | - | 19.175mm | 7.62mm | - | - | Non-RoHS Compliant | Contains Lead |