MAX22445
Reinforced, Fast, Low-Power, Four-Channel Digital Isolators
Industry's Fastest, Lowest Power Reinforced Digital Isolators
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Overview
Features and Benefits
- Reinforced Galvanic Isolation for Fast Digital Signals
- Up to 200Mbps Maximum Data Rate
- Withstands 5kVRMS for 60s (VISO)
- Continuously Withstands 1500VRMS (VIOWM)
- Withstands ±12.8kV Surge Between GNDA and GNDB with 1.2/50µs waveform
- High CMTI (50kV/µs, Typical)
- Low Power Consumption
- 0.74mW per Channel at 1Mbps with VDD = 1.8V
- 1.4mW per Channel at 1Mbps with VDD = 3.3V
- 3.2mW per Channel at 100Mbps with VDD = 1.8V
- Options to Support a Broad Range of Applications
- 2 Maximum Data Rates (200Mbps, 25Mbps)
- 3 Direction Configurations
- Active-High or Active-Low Enable Inputs
- 2 Fixed Output Default States (High/Low) or Pin-Selectable (M/N Versions)
Product Details
The MAX22444–MAX22446 are reinforced, fast, low-power 4-channel digital galvanic isolators using Maxim’s proprietary process technology. These devices transfer digital signals between circuits with different power domains, using as little as 0.74mW per channel at 1Mbps (1.8V supply). All of the devices in the family feature reinforced isolation for a withstand voltage rating of 5kVRMS for 60 seconds.
The MAX22444–MAX22446 family offers all possible unidirectional channel configurations to accommodate any 4-channel design, including SPI, RS-485, and digital I/O applications. Output enable for the A side of the MAX22445R/S/U/V is active-low, making them ideal for isolating a port on a shared SPI bus since the active-low CS signal can directly enable the MISO signal on the isolator. All other output enables in the MAX22444-MAX22446 family are the traditional active-high.
All channels on the MAX22444–MAX22446M/N are always enabled, however, the default state of the outputs of these devices is selectable.
Devices are available with a maximum data rate of either 25Mbps or 200Mbps, and with outputs that are either default-high or default-low. The default is the state the output assumes when the input is either not powered or is open-circuit. See the Ordering Information and Product Selector Guide for suffixes associated with each option. Independent 1.71V to 5.5V supplies on each side of the isolator also make the devices suitable for use as level translators.
All of the devices in the MAX22444–MAX22446 family are available in a 16-pin wide-body SOIC package with 8mm of creepage and clearance. The package material has a minimum comparative tracking index (CTI) of 400, which gives it a group II rating in creepage tables. All devices are rated for operation at ambient temperatures of -40°C to +125°C.
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Applications
- Battery Management
- Fieldbus Communications for Industrial Automation
- Isolated RS-485/RS-422, CAN
- Isolated SPI Interface
- Medical Systems
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (2)
Documentation & Resources
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MAX22445 Reliability Data10/10/2022
Tools & Simulations
IBIS Models
IBS
MAX22445 IBIS Model
544.63K
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX22445CAWE+ | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| MAX22445CAWE+T | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| MAX22445EAWE+ | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| MAX22445EAWE+T | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| MAX22445FAWE+ | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| MAX22445FAWE+T | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| MAX22445RAWE+ | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| MAX22445RAWE+T | Material Declaration | Reliability Data | Small-Outline IC, Wide (0.3in) | |
| Wafer Fabrication Data | MAX22445 Reliability Data |
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MAX22445 Discussions
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.