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CPC5903

Clare
Part Number CPC5903
Manufacturer Clare
Description Optically Isolated I2C Bus Repeater
Published Mar 10, 2012
Detailed Description www.DataSheet.co.kr Optically Isolated I C Bus Repeater 2 CPC5903 Features • Bidirectionally Buffers I2C SDA Signal ...
Datasheet PDF File CPC5903 PDF File

CPC5903
CPC5903

Overview
www.
DataSheet.
co.
kr Optically Isolated I C Bus Repeater 2 CPC5903 Features • Bidirectionally Buffers I2C SDA Signal • Extends and Isolates I2C Interfaces • Standard-mode and Fast-mode I2C Side B Fast-mode Compatible VDDB > 4.
5V • Operates on 2.
7V to 5.
5V • Voltage Level Translation • Slew-Limited Drivers Reduce EMI • Powerdown to Hi-Z Does Not Load I2C • 3750Vrms Galvanic Isolation • Single 8-pin Surface-Mount Package Description The CPC5903 is a dual, optically isolated, logic-bus repeater.
It isolates two open-drain logic signals while providing 3750Vrms of galvanic isolation.
When the two sides are powered by different supply voltages, it also functions as a logic level translator for levels as low as 2.
7V or as high as 5.
5V.
Because the CPC5903 provides an isolated bidirectional buffer for the I2C data signal and a unidirectional buffer for the I2C clock signal, it is best suited for applications where clock stretching is not required.
This configuration also requires the I2C bus master to be on the Side A bus.
Unlike transformer or capacitive isolators, optical isolation passes DC signals and does not require continuous clocking to ensure the proper state is maintained.
The CPC5903 always returns the buffered signals to their proper state after transient interruptions on either side.
Applications • • • • • Isolated Control and Signal Monitoring Power-over-Ethernet Power Supply High Side Interface I2C Bus Length Extenders I2C Logic Level Translation Approvals • UL 1577 Certified Component: File E76270 • EN/IEC 60950 Certified Component: TUV Certificate: B 11 10 49410 007 Ordering Information Part CPC5903G CPC5903GS CPC5903GSTR Description 8-Pin DIP (50 / Tube) 8-Pin Surface Mount (50 / Tube) 8-Pin Surface Mount (1000 / Reel) Pb RoHS 2002/95/EC e3 VDDA LED B Figure 1.
CPC5903 Functional Block Diagram VDDA IA 1 VDDB 8 B VDDB GNDA 2 A VDDB VDDA A IOA 3 VDDB D VDDA LED VDDA A 4 VDDA B 5 Q CLR VDDB IOB B 6 GNDB LED 7 OB VDDB DS-CPC5903-R01 www.
clare.
co...


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