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MAX22344

增強型、快速、低功耗、四通道、3.75kVRMS數字隔離器; ? 支持快速數字信號的增強電隔離\n? 數據率高達200Mbps\n? 可承受3.75kVRMS達60s (VISO)\n? 連續(xù)承受784VRMS (VIOWM)\n? GNDA和GNDB之間可承受±10kV浪涌，1.2/50μs波形\n? 高CMTI (50kV/μs，典型值)\n\n\n? 低功耗\n? 0.74mW/通道 @ 1Mbps，VDD = 1.8V\n? 1.4mW/通道 @ 1Mbps，VDD = 3.3V\n? 3.2mW/通道 @ 100Mbps，VDD = 1.8V\n\n\n? 多種選項，支持較寬應用范圍\n? 2種最大數據率(200Mbps、25Mbps)\n? 3種方向配置\n? 高電平有效或低電平有效使能輸入\n? 引腳可選默認輸出狀態(tài)(高/低電平);

MAX22344–MAX22346為增強型、快速、低功耗、4通道數字隔離器，采用Maxim專有的工藝技術。這些器件在不同電源域的電路之間傳輸數字信號，在1Mbps數據率(1.8V電源電)下的功耗只有0.74mW每通道。該家族中的所有器件具有增強的隔離性能，可承受額定3.75kVRMS隔離電壓（長達60秒）。 \n\n MAX22344–MAX22346家族提供所有可能的單向通道配置，支持任何形式的4通道設計，包括SPI、RS-485和數字I/O應用。MAX22345R/S的A側輸出使能為低電平有效，由于CS信號可直接使能隔離器上的MISO信號，使其成為在共用SPI總線上進行端口隔離的理想選擇。MAX22344–MAX22346家族中的其他全部輸出使能為傳統(tǒng)的高電平有效。 \n\n 器件可提供25Mbps或200Mbps最大數據率，以及可選默認輸出狀態(tài)。默認狀態(tài)是未施加輸入時或輸入開路時的輸出狀態(tài)。關于每種選項相關的后綴，請參見定購信息和選型指南。隔離器每側具有1.71V至5.5V獨立電源，使器件也適合用作電平轉換器。 \n\n MAX22344–MAX22346家族中的全部器件均采用20引腳SSOP封裝，爬電距離和間隙為5.5mm。所有器件的額定工作環(huán)境溫度為-40°C至+125°C。\n\n \n\n

MAX22344

Reinforced, Fast, Low-Power, Four-Channel 3.75kVRMS Digital Isolators

MAX22344

Broad Range of Data Transfer Rates (from DC to 200Mbps)

MAX22344C

增強型、快速、低功耗、四通道數字隔離器; ? Reinforced Galvanic Isolation for Fast Digital Signals\r\n - Up to 200Mbps Maximum Data Rate\r\n - Withstands 3.75kVRMS for 60s (VISO)\r\n - Continuously Withstands 784VRMS (VIOWM)\r\n - Withstands ±10kV Surge Between GNDA and GNDB with 1.2/50μs Waveform\r\n - High CMTI (50kV/μs, Typical)\r\n? Low Power Consumption\r\n - 0.74mW per Channel at 1Mbps with VDD = 1.8V\r\n - 1.4mW per Channel at 1Mbps with VDD = 3.3V\r\n - 3.2mW per Channel at 100Mbps with VDD = 1.8V\r\n? Options to Support a Broad Range of Applications\r\n - 2 Maximum Data Rates (200Mbps, 25Mbps)\r\n - 3 Direction Configurations\r\n - Active-High or Active-Low Enable Inputs\r\n - Pin-Selectable Output Default States (High/Low);

The MAX22344–MAX22346 are reinforced, fast, low-power, 4-channel digital galvanic isolators using Maxim’s proprietary process technology. These devices transferdigital 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 3.75kVRMS for 60 seconds. \r\n\r\n The MAX22344–MAX22346 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 MAX22345R/S 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 MAX22344–MAX22346 family are the traditional active-high. \r\n\r\n Devices are available with a maximum data rate of either 25Mbps or 200Mbps, and feature a selectable default state for the outputs. 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. \r\n\r\n All of the devices in the MAX22344–MAX22346 family are available in a 20-pin SSOP package with 5.5mm of creepage and clearance. All devices are rated for operation at ambient temperatures of -40°C to +125°C.

MAX22344BAAP

Reinforced, Fast, Low-Power, Four-Channel 3.75kVRMS Digital Isolators

MAX22344CAAP

Reinforced, Fast, Low-Power, Four-Channel 3.75kVRMS Digital Isolators