PCA9514ADP,118

Signal Buffers, Repeaters, Splitters Overview

The PCA9514ADP,118 is a hot swappable I2C-bus and SMBus buffer manufactured by NXP Semiconductors in an SOIC-8 package. It operates within a supply voltage range of 2.7 V to 5.5 V and supports clock frequencies from 0 Hz to 400 kHz. The device features bidirectional buffering for SDA and SCL lines, preventing bus corruption during live board insertion. It includes built-in ∆V/∆t rise time accelerators with a 0.8 V threshold and provides an active HIGH ENABLE input alongside an open-drain READY output.

Signal Buffers, Repeaters, Splitters Feature Summary

• Bidirectional buffering isolates backplane and card capacitances to prevent signal degradation during hot swapping
• Integrated rise time accelerator circuitry ensures compliance with I2C and SMBus standards using a 0.8 V threshold
• Digital control logic manages connection states via ENABLE and READY pins to ensure safe bus initialization

Signal Buffers, Repeaters, Splitters Applications

• cPCI, VME, and AdvancedTCA cards requiring hot-swappable I/O capabilities
• Multipoint backplane systems where live insertion and removal are necessary
• I2C bus expansion in environments demanding high noise immunity and capacitance isolation

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the ordering suffix '118' against official NXP documentation to confirm specific packaging details such as reel size or tape dimensions. Ensure the component matches the required SOIC-8 package variant. Cross-reference the part number with current datasheet revisions to validate availability and manufacturing status before procurement.

Signal Buffers, Repeaters, Splitters Selection Notes

Select the PCA9514ADP when designing multipoint backplane systems that require hot-swappable I2C connectivity without bus contention. This model is appropriate for applications needing bidirectional buffering and robust rise time acceleration. Ensure the system pull-up voltages match the supply voltage to utilize the internal accelerators effectively.

Signal Buffers, Repeaters, Splitters Part Context

This component belongs to the PCA951xA family of hot swappable bus buffers designed for I2C and SMBus protocols. It shares functional similarities with the PCA9513A but lacks the integrated 92 µA current source found on the PCA9513A. The dynamic offset design allows it to be connected in series or parallel with other devices in the same family.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The PCA9513ADP serves as a direct functional substitute, offering identical buffering and control features. The primary distinction is the PCA9513ADP's inclusion of a 92 µA current source on the SCLIN and SDAIN pins, which may be advantageous for specific PICMG backplane applications.