PCA9514D,118

Signal Buffers, Repeaters, Splitters Overview

The PCA9514D,118 is a hot swappable I2C-bus and SMBus buffer manufactured by NXP Semiconductors. It allows I/O card insertion into a live backplane without corrupting data or clock buses. The device provides bidirectional buffering for SDA and SCL lines, increasing fan-out while keeping backplane and card capacitances isolated. It operates within a power supply voltage range of 2.7 V to 5.5 V and supports clock frequencies from 0 Hz to 400 kHz. The component features an active HIGH ENABLE input and an open-drain READY output. It includes rise time accelerator circuitry with a threshold of 0.8 V to improve noise margin. The device is available in an 8-pin plastic SO package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Hot swappable design prevents bus corruption during live board insertion and removal
• Bidirectional buffering isolates backplane and card capacitances
• Integrated rise time accelerators enhance signal integrity and noise margin
• Digital control via ENABLE input and READY status output

Signal Buffers, Repeaters, Splitters Applications

• CompactPCI (cPCI) cards requiring hot swapping capabilities
• VME system interface cards
• AdvancedTCA (ATCA) peripheral cards

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix matches the required package type. Confirm that the component meets all necessary environmental and safety standards for the intended deployment environment before finalizing procurement decisions.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems that require hot-swappable I2C or SMBus connectivity. Ensure the application supports the specified operating voltage range and frequency limits. Consider the package constraints and thermal requirements for the target PCB layout.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the PCA9513/PCA9514 family of bus buffers. While similar to the PCA9513, it lacks the integrated current source on the SCLIN and SDAIN pins, making it suitable for applications where external pull-up resistors are preferred or required.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The PCA9513D serves as a functional alternative if the integrated current source feature is not needed. Verify pin compatibility and electrical specifications before substituting.