MAX22421
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MAX22421

Reinforced, Ultra-Low-Power, Two-Channel Digital Isolators

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Ultra -Low-Power and High CMTI Digital Isolator

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 8
1ku List Price Starting From $1.89
Features
  • 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)
Additional Details
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The MAX22_2_ are a family of 2-channel reinforced ultra-low-power digital isolators. The MAX22_2_ consume ultra-low power not only in DC but also across the entire operating speed range up to 10Mbps. The family offers two unidirectional channel configurations to accommodate any 2-channel design.

The MAX22_20 feature two channels transferring digital signals in one direction. The MAX22_21 have one channel to transmit data in one direction and the other channel to transmit in the opposite direction.

The MAX22420/1 are available in an 8-pin narrow-body SOIC package with 4mm creepage and clearance and are rated up to 3kVRMS. The MAX22820/1 are available in an 8-pin wide-body SOIC package with 8mm creepage and clearance and are rated up to 5kVRMS. This family of digital isolators offers ultra-low-power operation, high electromagnetic interference (EMI) immunity, and stable temperature performance through Analog Devices’ proprietary process technology. The devices isolate different ground domains and block high-voltage/high-current transients from sensitive or human interface circuitry.

The family of devices has a maximum data rate of 10Mbps and can be ordered with two glitch filter options and default-high or default-low outputs. The default is the state the output assumes when the input is open circuit. The B/E versions have 70ns (typ) glitch filter and C/F versions have 29ns (typ) glitch filter. The devices have two supply inputs (VDDA and VDDB) that independently set the logic levels on either side of device. VDDA and VDDB are referenced to GNDA and GNDB, respectively. The family also features a refresh circuit to ensure output accuracy when an input remains in the same state indefinitely.

Applications

  • 4-20mA Loop Process Control
  • Battery Management
  • Compact Micro PLC
  • Parasitically Powered Applications
Part Models 8
1ku List Price Starting From $1.89

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX22421BASA+
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MAX22421BASA+T
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MAX22421CASA+
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MAX22421CASA+T
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MAX22421EASA+
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MAX22421EASA+T
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MAX22421FASA+
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MAX22421FASA+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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MAX2242XSEVKIT

Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821

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MAX2242XSEVKIT

Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821

Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821

Features and Benefits

  • 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

Product Detail

The MAX22420/MAX22421 evaluation kits (EV kits) provide a proven design to evaluate the MAX22420/1 and MAX22820/1, a family of reinforced, ultra-low-power, two-channel digital isolators in an 8-pin NSOIC or 8-pin WSOIC package, respectively. Two types of evaluation boards are available to support all variants in the family in both 1/1 and 2/0 configurations. The MAX22421BSEVKIT# is fully assembled and tested, and it comes populated with the MAX22421BASA+ (Figure 1). The MAX2242XSEVKIT# is a generic board that has U1 unpopulated, allowing the user to select a device from the MAX22420/MAX22421 family (Figure 2). Both the evaluation boards support the 8-pin NSOIC package type only. See Table 1 EV kit options.

The MAX22820/MAX22821 is functionally equivalent to the MAX22420/MAX22421 but in an 8-pin WSOIC package. The EV kits can be used to evaluate the functionality and electrical performance of the MAX22820/ MAX22821.

The EV kits should be powered from two independent isolated power supplies with nominal output voltage in the range of 1.71V to 5.5V. For evaluating the electrical parameters of the device without any isolation between the two sides, a single power supply can also be used.

The MAX2242XSEVKIT# comes with U1 unpopulated and supports the following digital isolators: MAX22420BASA+, MAX22420CASA+, MAX22420EASA+, MAX22420FASA+, MAX22421BASA+, MAX22421CASA+, MAX22421EASA+, and MAX22421FASA+.

Applications

  • 4-20mA Loop Process Control
  • Battery Management
  • Compact Micro PLC
  • Parasitically Powered Applications
reference details image

MAX22421BSEVKIT

Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821

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MAX22421BSEVKIT

Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821

Evaluation Kit for the MAX22420/MAX22421/MAX22820/MAX22821

Features and Benefits

  • 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

Product Detail

The MAX22420/MAX22421 evaluation kits (EV kits) provide a proven design to evaluate the MAX22420/1 and MAX22820/1, a family of reinforced, ultra-low-power, two-channel digital isolators in an 8-pin NSOIC or 8-pin WSOIC package, respectively. Two types of evaluation boards are available to support all variants in the family in both 1/1 and 2/0 configurations. The MAX22421BSEVKIT# is fully assembled and tested, and it comes populated with the MAX22421BASA+ (Figure 1). The MAX2242XSEVKIT# is a generic board that has U1 unpopulated, allowing the user to select a device from the MAX22420/MAX22421 family (Figure 2). Both the evaluation boards support the 8-pin NSOIC package type only. See Table 1 EV kit options.

The MAX22820/MAX22821 is functionally equivalent to the MAX22420/MAX22421 but in an 8-pin WSOIC package. The EV kits can be used to evaluate the functionality and electrical performance of the MAX22820/ MAX22821.

The EV kits should be powered from two independent isolated power supplies with nominal output voltage in the range of 1.71V to 5.5V. For evaluating the electrical parameters of the device without any isolation between the two sides, a single power supply can also be used.

The MAX2242XSEVKIT# comes with U1 unpopulated and supports the following digital isolators: MAX22420BASA+, MAX22420CASA+, MAX22420EASA+, MAX22420FASA+, MAX22421BASA+, MAX22421CASA+, MAX22421EASA+, and MAX22421FASA+.

Applications

  • 4-20mA Loop Process Control
  • Battery Management
  • Compact Micro PLC
  • Parasitically Powered Applications
Tools & Simulations

Tools & Simulations 1

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