PCA9513D,112

Signal Buffers, Repeaters, Splitters Overview

The PCA9513D,112 is a hot swappable I2C and SMBus bus buffer manufactured by NXP USA Inc. It enables safe insertion of I/O cards into live backplanes without corrupting data or clock buses. The device provides bidirectional buffering for SDA and SCL lines, isolating card capacitance from the backplane. It operates within a supply voltage range of 2.7 V to 5.6 V and supports frequencies up to 400 kHz. Key features include a digital ENABLE input, an open-drain READY output, and integrated rise time accelerators with a 0.8 V threshold. The component is housed 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
• Integrated 92 μA current source on SCLIN and SDAIN for PICMG backplane applications
• Active HIGH ENABLE input and open-drain READY output for system control
• Rise time accelerator circuitry with improved noise margin

Signal Buffers, Repeaters, Splitters Applications

• cPCI, VME, and AdvancedTCA multi-point backplane systems
• I/O cards requiring insertion or removal from operating systems
• PICMG backplane applications utilizing built-in current sources

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm package type and temperature range. Confirm RoHS compliance status as required by project specifications. Ensure the procurement channel provides valid traceability for this discontinued interface component.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems that require hot swapping capabilities for I2C or SMBus peripherals. The PCA9513D is specifically suited for PICMG backplane architectures due to its integrated current source. Verify that the system pull-up resistors meet the minimum slew rate requirements to activate the rise time accelerators effectively.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the PCA951x family of hot swappable bus buffers produced by Philips Semiconductors (now NXP). It shares functional similarities with the PCA9514 but includes unique internal current sources for specific backplane standards. The D suffix indicates the 8-pin plastic small outline package variant.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The PCA9514D serves as a direct functional substitute for general hot swap buffering but lacks the integrated 92 μA current source found in the PCA9513D. Designers must evaluate whether the external pull-up resistor configuration can replace the missing current source functionality.