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I²C and SMBus dual-channel two-way buffer
NCA9617A is a BiCMOS dual bidirectional buffer designed for I²C bus and SMBus systems. The component allows bidirectional voltage level shift (up-conversion and down-conversion modes) between low voltages (as low as 0.8V) and higher voltages (2.2V to 5.5V) in hybrid applications. During level shift, this component extends I²C and similar bus systems without impairing system performance.
Product Features
• Dual-channel Bidirectional I²C Buffer
• Standard mode, fast mode (400kHz) and fast mode+ (1MHz) supported
• I²C operates voltage level shift from 0.8V to 5.5V and 2.5V to 5.5V
• Open-drain I²C I/O
• Clock stretching and multi-master arbitration supported on component
• Latch-up performance is higher than 100mA, compliant with JESD78 Class II
• ESD protection performance higher than what are stated in JESD22
o5500V human body charge-discharge model (A114-A)
o1500V charging component model (C101)
• Operation temperature: -40℃~105℃
• RoHS compliant package: MSOP-8
Application
• Server
• Router (telecom switching equipment)
• Industrial equipment
• Integrated with a number of I²C slave components or products with long PCB wiring
Functional Block Diagram
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