CPC5903GS

CPC5903 2 Optically Isolated I C Bus Repeater INTEGRATED CIRCUITS DIVISION Features Description 2 Bidirectionally Buffers I C SDA Signal The CPC5903 is a dual, optically isolated, logic-bus 2 Extends and Isolates I C Interfaces repeater. It isolates two open-drain logic signals while 2 Standard-mode and Fast-mode I C providing 3750V of galvanic isolation. When the rms Side B Fast-mode Compatible V > 4.5V two sides are powered by different supply voltages, it DDB Operates on 2.7V to 5.5V also functions as a logic level translator for levels as Voltage Level Translation low as 2.7V or as high as 5.5V. Because the CPC5903 2 Slew-Limited Drivers Reduce EMI provides an isolated bidirectional buffer for the I C 2 2 Powerdown to Hi-Z Does Not Load I C data signal and a unidirectional buffer for the I C clock 3750V Galvanic Isolation signal, it is best suited for applications where clock rms Single 8-pin Surface-Mount Package stretching is not required. This configuration also 2 Flammability Rating UL 95 V-0 requires the I C bus master to be on the Side A bus. Applications Unlike transformer or capacitive isolators, optical Isolated Control and Signal Monitoring isolation passes DC signals and does not require Power-over-Ethernet continuous clocking to ensure the proper state is Power Supply High Side Interface maintained. The CPC5903 always returns the buffered 2 I C Bus Length Extenders signals to their proper state after transient 2 I C Logic Level Translation interruptions on either side. Approvals UL 1577 File E76270 CSA Certified Component: Certificate 70157867 Ordering Information EN/IEC 60950 Certified Component: TUV Certificate available on our website Part Descript io n CPC5903G 8-Pin DIP (50 / Tube) CPC5903GS 8-Pin Surface Mount (50 / Tube) CPC5903GSTR 8-Pin Surface Mount (1000 / Reel) Figure 1. CPC5903 Functional Block Diagram V DDA V DDB 8 V V IA 1 DDB DDA B LED B V DDB GND 2 7 OB A A V DDB V LED DDA A 6 3 GND IOA B V DDB B D Q CLR V DDA V DDB LED V DDA V45 IOB DDA B A DS-CPC5903-R03 www.ixysic.com 1CPC5903 INTEGRATED CIRCUITS DIVISION 1. Specifications 3 1.1 Package Pinout . 3 1.2 Pin Description . 3 1.3 Absolute Maximum Ratings . 3 1.4 ESD Rating . 3 1.5 Thermal Characteristics 3 1.6 General Conditions 4 1.7 Electrical Specifications 4 1.8 Switching Specifications 5 1.9 Side A to Side B Switching Waveforms 6 1.10 IOB to IOA Switching Waveforms 6 2. Performance Data* 7 3. Functional Description . 8 3.1 Introduction 8 3.2 Fast-mode Operation 8 3.3 Logic Input Thresholds and Output Levels 8 3.4 Pull-Up Resistor Selection 8 3.5 Pulse Propagation, Stretching and Delays 9 3.6 Start-Up 10 3.7 Power Supply Decoupling and Noise . 10 4. Design Considerations 11 4.1 Side A Pull-Up Resistors: R . 11 PUA 4.2 Side B Pull-Up Resistors . 11 4.2.1 OB Pull-Up resistor: R . 11 PU-OB 4.2.2 IOB Pull-Up Resistor: R . 12 PUB 5. Manufacturing Information 13 5.1 Moisture Sensitivity . 13 5.2 ESD Sensitivity 13 5.3 Soldering Profile . 13 5.4 Board Wash 13 5.5 Mechanical Dimensions . 14 5.5.1 CPC5903G 8-Pin DIP Package 14 5.5.2 CPC5903GS 8-Pin Surface Mount Package 14 5.5.3 CPC5903GSTR Tape & Reel Information for Surface Mount Package 15 2 www.ixysic.com R03