Datasheet > MAX22445

MAX22445

更新时间： 2024-10-04 02:52:59

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
31页	1635K
描述
Reinforced, Fast, Low-Power, Four-Channel Digital Isolators

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MAX22445 数据手册

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MAX22444–MAX22446

Reinforced, Fast, Low-Power,

Four-Channel Digital Isolators

General Description

Beneﬁts and Features

● Reinforced Galvanic Isolation for Fast Digital Signals

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

• Up to 200Mbps Maximum Data Rate

• Withstands 5kV

for 60s (V

)

RMS

ISO

• Continuously Withstands 1500V

• Withstands ±10kV Surge Between GNDA and

GNDB with 1.2/50μs waveform

)

RMS IOWM

• High CMTI (50kV/μs, Typical)

5kV

for 60 seconds.

RMS

● Low Power Consumption

• 0.74mW per Channel at 1Mbps with V

= 1.8V

= 3.3V

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 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.

• 1.4mW per Channel at 1Mbps with V

• 3.2mW per Channel at 100Mbps with V

= 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)

All channels on the MAX22444–MAX22446M/N are

always enabled, however, the default state of the outputs

of these devices is selectable.

Applications

● Isolated SPI Interface

● Fieldbus Communications for Industrial Automation

● Isolated RS-485/RS-422, CAN

● Battery Management

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.

● Medical Systems

Safety Regulatory Approvals

● UL According to UL1577

● cUL According to CSA Bulletin 5A

● VDE 0884-11 Reinforced Isolation

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 400V, 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.

Ordering Information and Product Selector Guide appear at

end of data sheet.

19-100188; Rev 7; 3/20

12 3 4 5 6 7...31

中文翻译

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与MAX22445相关器件

型号	品牌	获取价格	描述	数据表
MAX22445FAWE+	MAXIM	获取价格	Interface Circuit,
MAX22445FWEVKIT	MAXIM	获取价格	Broad Range of Data Transfer Rates (from DC to 200Mbps)
MAX22446	MAXIM	获取价格	Broad Range of Data Transfer Rates (from DC to 200Mbps)
MAX2244EBL	ROCHESTER	获取价格	2400MHz - 2500MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER, 3 X 3 MM, UCSP-9
MAX2244EBL-T	MAXIM	获取价格	2.5GHz, 22dBm/20dBm Power Amplifiers with Analog Closed-Loop Power Control
MAX2244EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX2244/MAX2245/MAX2246
MAX2244-MAX2246	MAXIM	获取价格	2.5GHz, 22dBm/20dBm Power Amplifiers with Analog Closed-Loop Power Control
MAX2245	MAXIM	获取价格	2.5GHz.22dBm/20dBm Power Amplifiers with Analog Closed-Loop Power Control
MAX2245EBL	ROCHESTER	获取价格	2400MHz - 2500MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER, UCSP-9
MAX2245EBL-T	MAXIM	获取价格	2.5GHz, 22dBm/20dBm Power Amplifiers with Analog Closed-Loop Power Control

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