PCA9510AD,112

Signal Buffers, Repeaters, Splitters Overview

The PCA9510AD,112 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 inputs and high-impedance pins when VCC is 0 V. The package is SO8 (SOT96-1), with an operating temperature range of -40 °C to +85 °C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Hot swappable design prevents bus corruption during live board insertion and removal
• Bidirectional buffering increases fan-out and isolates backplane from card capacitances
• Active HIGH ENABLE input controls connection state and low current mode
• Open-drain READY output indicates physical connection status between sides

Signal Buffers, Repeaters, Splitters Applications

• cPCI cards requiring hot swapping capabilities
• VME backplane systems
• AdvancedTCA cards
• Multipoint backplane systems

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix ',112' corresponds to the tube packaging format as defined in the official datasheet. Confirm that the manufacturer designation matches NXP Semiconductors rather than legacy Philips branding. Ensure the part number aligns with the SO8 plastic small outline package variant. Cross-reference the RoHS compliance status with the latest product discontinuation notices if applicable.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component for applications requiring hot swap functionality without rise time acceleration circuitry. Use the PCA9510A series when multiple devices are present in the same system to prevent interference. Ensure the system pull-up resistors meet the slew rate requirements for the chosen VCC voltage. Verify compatibility with Standard-mode and Fast-mode I2C standards alongside SMBus protocols.

Signal Buffers, Repeaters, Splitters Part Context

The PCA9510AD belongs to the PCA9510A family of hot swappable I2C and SMBus buffers. This family includes variants like the PCA9511A which feature rise time accelerators. The PCA9510A specifically lacks these accelerators to avoid interference in multi-device systems. It shares dynamic offset driver characteristics with other members of the A-series, allowing serial or parallel connections within specific system constraints.

Signal Buffers, Repeaters, Splitters Replacement Considerations

PCA9510ADP serves as a pin-compatible alternative using the TSSOP8 package instead of SO8.