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MAX22245, MAX22246
Product Highlights
Reinforced, Fast, Low-Power, Two-
Channel Digital Isolators
• Motor Drive
Simplified Application Diagram
•
•
AEC-Q100 Qualification for /V devices
Reinforced Galvanic Isolation for Digital Signals
• 8-SOIC with 8mm of Creepage and Clearance
3.3V
1.8V
2.5V
0.1µF
0.1µF
0.1µF
0.1µF
• Withstands 5kV
for 60s (V
)
RMS
• Continuously Withstands 848V
ISO
V
CC
V
L
(V
)
MICRO
CONTROLLER
RMS IOWM
MAX22502E
MAX22246C/F
V
DD
V
DDA
V
DDB
RE
B
A
• Withstands ±12.8kV Surge Between GNDA and
GNDB with 1.2/50μs Waveform
RX
OUT1
IN1
RO
2.5V
• High CMTI (50kV/μs, typ)
DE
Y
Z
•
Low Power Consumption
• 0.78mW per Channel at 1Mbps with V
• 1.47mW per Channel at 1Mbps with V
DI
TX
IN2
OUT2
GNDB
= 1.8V
= 3.3V
PSET
GND
GNDA
DD_
DD_
4k ꢀ
GND
• 3.28mW per Channel at 100Mbps with V
=
DD_
1.8V
Pin Description
•
•
Low Propagation Delay and Low Jitter
TOP VIEW
• Maximum Data Rate Up to 200Mbps
• Low Propagation Delay 7ns (typ) at V
= 3.3V
+
+
DD_
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
V
V
V
V
DDB
DDA
DDB
DDA
• Clock Jitter RMS 7.5ps (typ)
IN1
MAX22245
OUT1
OUT2
OUT1
IN2
MAX22246
IN1
Safety Regulatory Approvals
• UL According to UL1577
• cUL According to CSA Bulletin 5A
IN2
OUT2
GNDB
GNDA
GNDB GNDA
• VDE 0884-11 Reinforced Insulation (Pending)
WIDE SOIC
WIDE SOIC
Key Applications
These devices transfer digital signals between circuits
with different power domains, using as little as 0.78mW
per-channel at 1Mbps (1.8V supply). The low-power
feature reduces system dissipation, increases reliability,
and enables compact designs.
•
Automotive
• Hybrid Electric Vehicle
• Chargers
• Battery Management Systems (BMS)
• Inverters
The MAX22245/MAX22246 are a family of 2-channel
reinforced, fast, low-power digital galvanic isolators
using Analog Devices’ proprietary process technology.
All devices feature reinforced isolation for a withstand
Devices are available with a maximum data rate of
25Mbps or 200Mbps, and with outputs that are either
default high or default low. The devices feature low
propagation delay and low clock jitter, which reduces
system latency.
voltage rating of 5kV
for 60 seconds. Both
RMS
Independent 1.71V to 5.5V supplies on each side of the
isolator also make the devices suitable for use as level
translators.
automotive and general-purpose devices are rated for
operation at ambient temperatures of -40°C to +125°C.
Devices with /V suffix are AEC-Q100 qualified. Refer to
the Ordering Information for all automotive grade part
numbers.
The MAX22245 features two channels transferring data
in the same direction. The two channels of the
MAX22246 transfer data in opposite directions, and this
makes the MAX22246 ideal for isolating the Tx and Rx
lines of a transceiver.
•
Industrial
• Isolated SPI
• Isolated RS-232, RS-485/RS-422, CAN
• Fieldbus Communications
Ordering Information appears at end of data sheet.
19-100820; Rev 9; 09/22
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