PCA9510ADP,118

Signal Buffers, Repeaters, Splitters Overview

The PCA9510ADP,118 is a hot swappable I2C-bus and SMBus buffer manufactured by NXP Semiconductors. It allows I/O card insertion into live backplanes without corrupting data or clock buses. The device provides bidirectional buffering for SDA and SCL lines, increasing fan-out while isolating backplane and card capacitances. 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 1 V precharge on SDAIN and SCLIN inputs and high-impedance pins when VCC is 0 V. The package is TSSOP8 with 8 leads.

Signal Buffers, Repeaters, Splitters Feature Summary

• Bidirectional buffering prevents signal corruption during live board insertion and removal
• Compatible with Standard-mode I2C-bus, Fast-mode I2C-bus, and SMBus standards
• Active HIGH ENABLE input and Active HIGH READY open-drain output
• High-impedance SDAn and SCLn pins for VCC = 0 V

Signal Buffers, Repeaters, Splitters Applications

• cPCI cards requiring insertion or removal from an operating system
• VME cards requiring insertion or removal from an operating system
• AdvancedTCA cards requiring insertion or removal from an operating system
• Multipoint backplane cards requiring hot swapping capabilities

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the ordering suffix ,118 corresponds to the TSSOP8 plastic thin shrink small outline package (SOT505-1) variant. Confirm the manufacturer is NXP Semiconductors. Ensure the part number matches PCA9510ADP,118 exactly to avoid confusion with the SO8 variant (PCA9510AD,118). Check datasheet revision Rev. 04 for accurate specifications.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for systems requiring hot-swappable I2C or SMBus buffers without rise time accelerator circuitry. Suitable for cPCI, VME, and AdvancedTCA applications. Verify compatibility with dynamic offset I/Os; it cannot connect to static offset I/Os used on PCA9515/16 series or PCA9517 B side. Consider pull-up resistor values based on bus capacitance and VCC voltage.

Signal Buffers, Repeaters, Splitters Part Context

The PCA9510A series includes variants like PCA9511A which feature rise time accelerators. The PCA9510ADP,118 specifically lacks these accelerators to prevent interference in multi-device systems. It shares the same pinout and general functionality as other PCA9510A variants but differs in internal circuitry regarding edge acceleration. It is designed for multipoint backplane systems.

Signal Buffers, Repeaters, Splitters Replacement Considerations

PCA9510AD,118 offers the same functionality in an SO8 package instead of TSSOP8. Other PCA9510A variants may include rise time accelerators (e.g., PCA9511A) or different features like hardware disable pins (e.g., PCA9513A). Ensure replacement parts match the specific requirement for no rise time acceleration if that is critical for the design.

Signal Buffers, Repeaters, Splitters FAQ

Does the PCA9510ADP,118 have rise time accelerator circuitry?

No, the PCA9510A does not have rise time accelerator circuitry to prevent interference when there are multiple devices in the same system.

What is the function of the ENABLE pin?

The ENABLE pin is an active HIGH digital input that enables the device when asserted HIGH and forces the device into a Low current mode when asserted LOW.

Can the PCA9510A be connected to PCA9515/16 series devices?

No, the PCA9510A cannot connect to the static offset I/Os used on the PCA9515/15A/16/16A/18 or PCA9517 B side.