MOSN 场效应管 双向电平转换电路nxp Application note.pdfVIP

APPLICATION NOTE Bi-directional level shifter for I²C-bus and other systems. AN97055 Philips Semiconductors Bi-directional level shifter for I²C-bus and other Application Note systems. AN97055 Abstract With a single MOS-FET a bi-directional level shifter circuit can be realised to connect devices with different supply voltages of e.g. 5 Volt and 3.3 Volt to one I2C-bus system. The level shifter can also isolate a bus section of powered-down devices from the I2C-bus, allowing the powered part of the I2C-bus to operate in a normal way. The level shifter can also be used in other bus systems or point to point connections for level shifting and/or isolation. Purchase of Philips I2C components conveys a license under the I2C patent to use the com- ponents in the I2C system, provided the system conforms to the I2C specifications defined by Philips. © Philips Electronics N.V. 1997 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual prop