PCA9514DP,118

Signal Buffers, Repeaters, Splitters Overview

The PCA9514DP,118 is a hot swappable I2C and SMBus bus buffer manufactured by NXP Semiconductors. It provides bidirectional buffering for SDA and SCL lines to prevent signal corruption during live board insertion in multi-point backplane systems. The device operates within a power supply voltage range of 2.7 V to 5.5 V and supports clock frequencies from 0 kHz to 400 kHz. It features an active HIGH ENABLE input and an open-drain READY output. The component is housed in an 8-pin plastic TSSOP (MSOP) package with an operating temperature range of -40 °C to +85 °C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Bi-directional buffering isolates card capacitance from the backplane to maintain signal integrity during hot swapping.
• Integrated rise time accelerator circuitry with a 0.8 V threshold improves noise margin over previous generations.
• Control logic prevents connection until bus idle or stop conditions are detected on the backplane.

Signal Buffers, Repeaters, Splitters Applications

• CompactPCI (cPCI) cards requiring hot swap capability
• VME system interface cards
• AdvancedTCA peripheral cards

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix

Signal Buffers, Repeaters, Splitters Selection Notes

Select the PCA9514DP when a hot swappable buffer is required without the integrated current source found in the PCA9513. Ensure the design accommodates the dynamic offset voltage characteristics when connecting multiple buffers in series, as recommended limits apply to maintain signal levels.

Signal Buffers, Repeaters, Splitters Part Context

This component belongs to the PCA951x family of I2C bus buffers designed for hot swap applications. Unlike the PCA9513, which includes a 92 μA current source for PICMG backplanes, the PCA9514 relies on external pull-up resistors. Both share identical control logic, rise time accelerators, and pin configurations.

Signal Buffers, Repeaters, Splitters Replacement Considerations

PCA9513DP,118 offers similar functionality but includes an internal 92 μA current source on SCLIN and SDAIN pins suitable for PICMG backplanes.