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Interface ICs provide complete electronic interface circuit functions in a single chip which increases reliability while providing significant savings in design effort, design size and cost. Interface devices control and manage signal communications between diverse electronic systems. Our wide selection of interface ICs enable robust, reliable and efficient communications which simplify design while providing the highest levels of signal isolation and protection. Our market-leading transceivers, IO-Link devices, USB, high-speed serial link and industrial I/O interface devices support a broad variety of applications, including industrial, automotive, mobile and portable devices.
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Featured Products
MAX2087 8-Channel, High-Performance, Low-Power Fully-Integrated Ultrasound Transceiver with 5-Level Pulser and T/R Switch

MAX22501E 100Mbps Half-Duplex RS-485/RS-422 Transceivers for Long Cables
- High-Speed Operation Over Long Distances
- Up to 100Mbps Data Rate
- Integrated Preemphasis Extends Cable Length (MAX22500E)
- High Receiver Sensitivity
- Wide Receiver Bandwidth
- Symmetrical Receiver Thresholds
- Integrated Protection Increases Robustness
- -15V to +15V Common Mode Range
- ±15kV ESD Protection (Human Body Model)
- ±7kV IEC 61000-4-2 Air-Gap ESD Protection
- ±6kV IEC 61000-4-2 Contact Discharge ESD Protection
- Withstands up to ±4kV EFT
- Driver Outputs are Short-Circuit Protected
- Flexibility for Many Different Applications
- 3V to 5.5V Supply Range
- Low Voltage Logic Supply Down to 1.6V (MAX22500E)
- Low 5µA (max) Shutdown Current
- Available in 8-pin or 10-pin TDFN Package and an 8-pin µMAX Package
- -40°C to +125°C Operating Temperature Range

MAX22500E 100Mbps Half-Duplex RS-485/RS-422 Transceivers for Long Cables
- High-Speed Operation Over Long Distances
- Up to 100Mbps Data Rate
- Integrated Preemphasis Extends Cable Length (MAX22500E)
- High Receiver Sensitivity
- Wide Receiver Bandwidth
- Symmetrical Receiver Thresholds
- Integrated Protection Increases Robustness
- -15V to +15V Common Mode Range
- ±15kV ESD Protection (Human Body Model)
- ±7kV IEC 61000-4-2 Air-Gap ESD Protection
- ±6kV IEC 61000-4-2 Contact Discharge ESD Protection
- Withstands up to ±4kV EFT
- Driver Outputs are Short-Circuit Protected
- Flexibility for Many Different Applications
- 3V to 5.5V Supply Range
- Low Voltage Logic Supply Down to 1.6V (MAX22500E)
- Low 5µA (max) Shutdown Current
- Available in 8-pin or 10-pin TDFN Package and an 8-pin µMAX Package
- -40°C to +125°C Operating Temperature Range

MAX22820 Reinforced, Ultra-Low-Power, Two-Channel Digital Isolators
- Ultra-Low Power Consumption
- 11.4µA per Channel at DC with VDD = 3.3V
- 15.4µA per Channel at 100kbps with VDD = 3.3V
- 54.7µA per Channel at 1Mbps with VDD = 3.3V
- Wide Supply Range Supports from 1.71V to 5.5V
- Reinforced Galvanic Isolation for Digital Signals
- 8-NSOIC with 4mm Creepage and Clearance Withstands 3kVRMS for 60s (VISO) and Continuously Withstands 445VRMS (VIOWM)
- 8-WSOIC with 8mm Creepage and Clearance Withstands 5kVRMS for 60s (VISO) and Continuously Withstands 848VRMS (VIOWM)
- Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
- High CMTI (200kV/µs, min)
- Low Propagation Delay and Low Jitter
- Maximum Data Rate Up to 10Mbps
- Low Propagation Delay 51ns (typ) at VDD = 3.3V
- Clock Jitter RMS 15.4ps (typ)
- Safety Regulatory Approvals
- UL According to UL1577
- cUL According to CSA Bulletin 5A
- VDE 0884-11 Reinforced Insulation (Pending)
- IECEx and ATEX Intrinsic Safety (IS): Sira 0518 II 1G Ex ia IIC Ga (Pending)

MAX22821 Reinforced, Ultra-Low-Power, Two-Channel Digital Isolators
- Ultra-Low Power Consumption
- 11.4µA per Channel at DC with VDD = 3.3V
- 15.4µA per Channel at 100kbps with VDD = 3.3V
- 54.7µA per Channel at 1Mbps with VDD = 3.3V
- Wide Supply Range Supports from 1.71V to 5.5V
- Reinforced Galvanic Isolation for Digital Signals
- 8-NSOIC with 4mm Creepage and Clearance Withstands 3kVRMS for 60s (VISO) and Continuously Withstands 445VRMS (VIOWM)
- 8-WSOIC with 8mm Creepage and Clearance Withstands 5kVRMS for 60s (VISO) and Continuously Withstands 848VRMS (VIOWM)
- Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
- High CMTI (200kV/µs, min)
- Low Propagation Delay and Low Jitter
- Maximum Data Rate Up to 10Mbps
- Low Propagation Delay 51ns (typ) at VDD = 3.3V
- Clock Jitter RMS 15.4ps (typ)
- Safety Regulatory Approvals
- UL According to UL1577
- cUL According to CSA Bulletin 5A
- VDE 0884-11 Reinforced Insulation (Pending)
- IECEx and ATEX Intrinsic Safety (IS): Sira 0518 II 1G Ex ia IIC Ga (Pending)

MAX22421 Reinforced, Ultra-Low-Power, Two-Channel Digital Isolators
- Ultra-Low Power Consumption
- 11.4µA per Channel at DC with VDD = 3.3V
- 15.4µA per Channel at 100kbps with VDD = 3.3V
- 54.7µA per Channel at 1Mbps with VDD = 3.3V
- Wide Supply Range Supports from 1.71V to 5.5V
- Reinforced Galvanic Isolation for Digital Signals
- 8-NSOIC with 4mm Creepage and Clearance Withstands 3kVRMS for 60s (VISO) and Continuously Withstands 445VRMS (VIOWM)
- 8-WSOIC with 8mm Creepage and Clearance Withstands 5kVRMS for 60s (VISO) and Continuously Withstands 848VRMS (VIOWM)
- Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
- High CMTI (200kV/µs, min)
- Low Propagation Delay and Low Jitter
- Maximum Data Rate Up to 10Mbps
- Low Propagation Delay 51ns (typ) at VDD = 3.3V
- Clock Jitter RMS 15.4ps (typ)
- Safety Regulatory Approvals
- UL According to UL1577
- cUL According to CSA Bulletin 5A
- VDE 0884-11 Reinforced Insulation (Pending)
- IECEx and ATEX Intrinsic Safety (IS): Sira 0518 II 1G Ex ia IIC Ga (Pending)

MAX22420 Reinforced, Ultra-Low-Power, Two-Channel Digital Isolators
- Ultra-Low Power Consumption
- 11.4µA per Channel at DC with VDD = 3.3V
- 15.4µA per Channel at 100kbps with VDD = 3.3V
- 54.7µA per Channel at 1Mbps with VDD = 3.3V
- Wide Supply Range Supports from 1.71V to 5.5V
- Reinforced Galvanic Isolation for Digital Signals
- 8-NSOIC with 4mm Creepage and Clearance Withstands 3kVRMS for 60s (VISO) and Continuously Withstands 445VRMS (VIOWM)
- 8-WSOIC with 8mm Creepage and Clearance Withstands 5kVRMS for 60s (VISO) and Continuously Withstands 848VRMS (VIOWM)
- Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
- High CMTI (200kV/µs, min)
- Low Propagation Delay and Low Jitter
- Maximum Data Rate Up to 10Mbps
- Low Propagation Delay 51ns (typ) at VDD = 3.3V
- Clock Jitter RMS 15.4ps (typ)
- Safety Regulatory Approvals
- UL According to UL1577
- cUL According to CSA Bulletin 5A
- VDE 0884-11 Reinforced Insulation (Pending)
- IECEx and ATEX Intrinsic Safety (IS): Sira 0518 II 1G Ex ia IIC Ga (Pending)

MAX22421BSEVKIT Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821
- Ultra-Low-Power Operation
- Data Transfer Rates up to 10Mbps
- MAX22420 with 2:0 Channel Configuration MAX22421 with 1:1 Channel Configuration
- SMA Connectors for Easy Connection to External Equipment
- Wide Power Supply Voltage Range from 1.71V to 5.5V
- Guaranteed up to 3kVRMS Isolation for the 60s
- -40° C to +125° C Temperature Range
- Proven PCB Layout

MAX2242XSEVKIT Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821
- Ultra-Low-Power Operation
- Data Transfer Rates up to 10Mbps
- MAX22420 with 2:0 Channel Configuration MAX22421 with 1:1 Channel Configuration
- SMA Connectors for Easy Connection to External Equipment
- Wide Power Supply Voltage Range from 1.71V to 5.5V
- Guaranteed up to 3kVRMS Isolation for the 60s
- -40° C to +125° C Temperature Range
- Proven PCB Layout

MAX22506E 50Mbps Half-Duplex RS-485/RS-422 Transceiver with High EFT Immunity
- High-Speed Operation over Long Distances
- Up to 50Mbps Data Rate
- High Receiver Sensitivity
- Wide Receiver Bandwidth
- Symmetrical Receiver Thresholds
- Integrated Protection Increases Robustness
- -15V to +15V Common-Mode Range
- ±15kV ESD Protection (Human Body Model)
- ±7kV IEC 61000-4-2 Air-Gap ESD Protection
- ±6kV IEC 61000-4-2 Contact Discharge ESD Protection
- Withstands Over ±4kV EFT
- Driver Outputs are Short-Circuit Protected
- Flexibility for Many Different Applications
- 3V to 5.5V Supply Range
- Low 5μA (max) Shutdown Current
- Available in 8-pin SOIC and μMAX Packages
- -40°C to +125°C Operating Temperature Range
MAX2087 8-Channel, High-Performance, Low-Power Fully-Integrated Ultrasound Transceiver with 5-Level Pulser and T/R Switch

MAX22501E 100Mbps Half-Duplex RS-485/RS-422 Transceivers for Long Cables
- High-Speed Operation Over Long Distances
- Up to 100Mbps Data Rate
- Integrated Preemphasis Extends Cable Length (MAX22500E)
- High Receiver Sensitivity
- Wide Receiver Bandwidth
- Symmetrical Receiver Thresholds
- Integrated Protection Increases Robustness
- -15V to +15V Common Mode Range
- ±15kV ESD Protection (Human Body Model)
- ±7kV IEC 61000-4-2 Air-Gap ESD Protection
- ±6kV IEC 61000-4-2 Contact Discharge ESD Protection
- Withstands up to ±4kV EFT
- Driver Outputs are Short-Circuit Protected
- Flexibility for Many Different Applications
- 3V to 5.5V Supply Range
- Low Voltage Logic Supply Down to 1.6V (MAX22500E)
- Low 5µA (max) Shutdown Current
- Available in 8-pin or 10-pin TDFN Package and an 8-pin µMAX Package
- -40°C to +125°C Operating Temperature Range

MAX22500E 100Mbps Half-Duplex RS-485/RS-422 Transceivers for Long Cables
- High-Speed Operation Over Long Distances
- Up to 100Mbps Data Rate
- Integrated Preemphasis Extends Cable Length (MAX22500E)
- High Receiver Sensitivity
- Wide Receiver Bandwidth
- Symmetrical Receiver Thresholds
- Integrated Protection Increases Robustness
- -15V to +15V Common Mode Range
- ±15kV ESD Protection (Human Body Model)
- ±7kV IEC 61000-4-2 Air-Gap ESD Protection
- ±6kV IEC 61000-4-2 Contact Discharge ESD Protection
- Withstands up to ±4kV EFT
- Driver Outputs are Short-Circuit Protected
- Flexibility for Many Different Applications
- 3V to 5.5V Supply Range
- Low Voltage Logic Supply Down to 1.6V (MAX22500E)
- Low 5µA (max) Shutdown Current
- Available in 8-pin or 10-pin TDFN Package and an 8-pin µMAX Package
- -40°C to +125°C Operating Temperature Range

MAX22820 Reinforced, Ultra-Low-Power, Two-Channel Digital Isolators
- Ultra-Low Power Consumption
- 11.4µA per Channel at DC with VDD = 3.3V
- 15.4µA per Channel at 100kbps with VDD = 3.3V
- 54.7µA per Channel at 1Mbps with VDD = 3.3V
- Wide Supply Range Supports from 1.71V to 5.5V
- Reinforced Galvanic Isolation for Digital Signals
- 8-NSOIC with 4mm Creepage and Clearance Withstands 3kVRMS for 60s (VISO) and Continuously Withstands 445VRMS (VIOWM)
- 8-WSOIC with 8mm Creepage and Clearance Withstands 5kVRMS for 60s (VISO) and Continuously Withstands 848VRMS (VIOWM)
- Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
- High CMTI (200kV/µs, min)
- Low Propagation Delay and Low Jitter
- Maximum Data Rate Up to 10Mbps
- Low Propagation Delay 51ns (typ) at VDD = 3.3V
- Clock Jitter RMS 15.4ps (typ)
- Safety Regulatory Approvals
- UL According to UL1577
- cUL According to CSA Bulletin 5A
- VDE 0884-11 Reinforced Insulation (Pending)
- IECEx and ATEX Intrinsic Safety (IS): Sira 0518 II 1G Ex ia IIC Ga (Pending)

MAX22821 Reinforced, Ultra-Low-Power, Two-Channel Digital Isolators
- Ultra-Low Power Consumption
- 11.4µA per Channel at DC with VDD = 3.3V
- 15.4µA per Channel at 100kbps with VDD = 3.3V
- 54.7µA per Channel at 1Mbps with VDD = 3.3V
- Wide Supply Range Supports from 1.71V to 5.5V
- Reinforced Galvanic Isolation for Digital Signals
- 8-NSOIC with 4mm Creepage and Clearance Withstands 3kVRMS for 60s (VISO) and Continuously Withstands 445VRMS (VIOWM)
- 8-WSOIC with 8mm Creepage and Clearance Withstands 5kVRMS for 60s (VISO) and Continuously Withstands 848VRMS (VIOWM)
- Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
- High CMTI (200kV/µs, min)
- Low Propagation Delay and Low Jitter
- Maximum Data Rate Up to 10Mbps
- Low Propagation Delay 51ns (typ) at VDD = 3.3V
- Clock Jitter RMS 15.4ps (typ)
- Safety Regulatory Approvals
- UL According to UL1577
- cUL According to CSA Bulletin 5A
- VDE 0884-11 Reinforced Insulation (Pending)
- IECEx and ATEX Intrinsic Safety (IS): Sira 0518 II 1G Ex ia IIC Ga (Pending)

MAX22421 Reinforced, Ultra-Low-Power, Two-Channel Digital Isolators
- Ultra-Low Power Consumption
- 11.4µA per Channel at DC with VDD = 3.3V
- 15.4µA per Channel at 100kbps with VDD = 3.3V
- 54.7µA per Channel at 1Mbps with VDD = 3.3V
- Wide Supply Range Supports from 1.71V to 5.5V
- Reinforced Galvanic Isolation for Digital Signals
- 8-NSOIC with 4mm Creepage and Clearance Withstands 3kVRMS for 60s (VISO) and Continuously Withstands 445VRMS (VIOWM)
- 8-WSOIC with 8mm Creepage and Clearance Withstands 5kVRMS for 60s (VISO) and Continuously Withstands 848VRMS (VIOWM)
- Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
- High CMTI (200kV/µs, min)
- Low Propagation Delay and Low Jitter
- Maximum Data Rate Up to 10Mbps
- Low Propagation Delay 51ns (typ) at VDD = 3.3V
- Clock Jitter RMS 15.4ps (typ)
- Safety Regulatory Approvals
- UL According to UL1577
- cUL According to CSA Bulletin 5A
- VDE 0884-11 Reinforced Insulation (Pending)
- IECEx and ATEX Intrinsic Safety (IS): Sira 0518 II 1G Ex ia IIC Ga (Pending)

MAX22420 Reinforced, Ultra-Low-Power, Two-Channel Digital Isolators
- Ultra-Low Power Consumption
- 11.4µA per Channel at DC with VDD = 3.3V
- 15.4µA per Channel at 100kbps with VDD = 3.3V
- 54.7µA per Channel at 1Mbps with VDD = 3.3V
- Wide Supply Range Supports from 1.71V to 5.5V
- Reinforced Galvanic Isolation for Digital Signals
- 8-NSOIC with 4mm Creepage and Clearance Withstands 3kVRMS for 60s (VISO) and Continuously Withstands 445VRMS (VIOWM)
- 8-WSOIC with 8mm Creepage and Clearance Withstands 5kVRMS for 60s (VISO) and Continuously Withstands 848VRMS (VIOWM)
- Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50µs Waveform
- High CMTI (200kV/µs, min)
- Low Propagation Delay and Low Jitter
- Maximum Data Rate Up to 10Mbps
- Low Propagation Delay 51ns (typ) at VDD = 3.3V
- Clock Jitter RMS 15.4ps (typ)
- Safety Regulatory Approvals
- UL According to UL1577
- cUL According to CSA Bulletin 5A
- VDE 0884-11 Reinforced Insulation (Pending)
- IECEx and ATEX Intrinsic Safety (IS): Sira 0518 II 1G Ex ia IIC Ga (Pending)

MAX22421BSEVKIT Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821
- Ultra-Low-Power Operation
- Data Transfer Rates up to 10Mbps
- MAX22420 with 2:0 Channel Configuration MAX22421 with 1:1 Channel Configuration
- SMA Connectors for Easy Connection to External Equipment
- Wide Power Supply Voltage Range from 1.71V to 5.5V
- Guaranteed up to 3kVRMS Isolation for the 60s
- -40° C to +125° C Temperature Range
- Proven PCB Layout

MAX2242XSEVKIT Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821
- Ultra-Low-Power Operation
- Data Transfer Rates up to 10Mbps
- MAX22420 with 2:0 Channel Configuration MAX22421 with 1:1 Channel Configuration
- SMA Connectors for Easy Connection to External Equipment
- Wide Power Supply Voltage Range from 1.71V to 5.5V
- Guaranteed up to 3kVRMS Isolation for the 60s
- -40° C to +125° C Temperature Range
- Proven PCB Layout

MAX22506E 50Mbps Half-Duplex RS-485/RS-422 Transceiver with High EFT Immunity
- High-Speed Operation over Long Distances
- Up to 50Mbps Data Rate
- High Receiver Sensitivity
- Wide Receiver Bandwidth
- Symmetrical Receiver Thresholds
- Integrated Protection Increases Robustness
- -15V to +15V Common-Mode Range
- ±15kV ESD Protection (Human Body Model)
- ±7kV IEC 61000-4-2 Air-Gap ESD Protection
- ±6kV IEC 61000-4-2 Contact Discharge ESD Protection
- Withstands Over ±4kV EFT
- Driver Outputs are Short-Circuit Protected
- Flexibility for Many Different Applications
- 3V to 5.5V Supply Range
- Low 5μA (max) Shutdown Current
- Available in 8-pin SOIC and μMAX Packages
- -40°C to +125°C Operating Temperature Range