PCA9513D,118

Signal Buffers, Repeaters, Splitters Overview

The PCA9513D,118 is a hot swappable I2C and SMBus bus buffer manufactured by NXP Semiconductors. It allows I/O card insertion into a live backplane without corrupting data or clock buses. The device features bi-directional buffering for SDA and SCL lines, rise time accelerators with a 0.8 V threshold, and a digital ENABLE input. It includes a 92 μA current source on SCLIN and SDAIN for PICMG backplane applications. Operating voltage ranges from 2.7 V to 5.5 V, supporting frequencies up to 400 kHz. It is housed in an SOIC-8 package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Hot swappable design prevents bus corruption during live board insertion and removal
• Bi-directional buffering isolates backplane and card capacitances while maintaining signal integrity
• Integrated rise time accelerators improve noise margin with a 0.8 V threshold
• Built-in 92 μA current source on SCLIN and SDAIN eliminates external pull-up resistors for specific backplane applications

Signal Buffers, Repeaters, Splitters Applications

• cPCI cards requiring hot swapping capabilities
• VME backplane systems
• AdvancedTCA cards
• Multi-point backplane cards inserted into operating systems

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the component revision level against the latest Philips/NXP product data sheet dated October 5, 2004. Confirm that the SOIC-8 package matches the SOT96-1 drawing number specified in the ordering information. Ensure compatibility with the required I2C standard mode and fast mode specifications before finalizing procurement orders.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring hot swap functionality for I2C or SMBus buses. It is suitable for cPCI, VME, and AdvancedTCA architectures. Ensure the system operates within the 2.7 V to 5.5 V supply range. Verify that the bus capacitance meets minimum requirements for proper operation of the connection circuitry and rise time accelerators.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the PCA9513/PCA9514 series of hot swappable bus buffers. It is functionally similar to the PCA9514 but includes an integrated 92 μA current source on the SCLIN and SDAIN pins, which is unique to the PCA9513 variant for PICMG backplane applications. Both devices share identical pinouts and core buffering logic.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The PCA9514D,118 is a direct functional substitute that lacks the integrated 92 μA current source. Designers must verify if the application requires the internal current source or can rely on external pull-up resistors. Other PCA951x series parts may require significant circuit modifications due to differences in rise time accelerator thresholds and offset voltages.