PI6ULS5V9511AWEX

Specialized Overview

The PI6ULS5V9511AWEX is a hot-swappable I2C bus and SMBus buffer manufactured by Diodes Incorporated. It supports bidirectional buffering for SDA and SCL lines, enabling fan-out expansion while isolating input and output capacitances. The device operates within a supply voltage range of 2.7 V to 5.5 V and supports clock frequencies up to 400 kHz. Key electrical parameters include a propagation delay of 70 ns, an operating supply current of 2.8 mA, and an output current capability of 50 mA. It features built-in rise-time accelerators and pre-charge circuitry set at 1.1 V to minimize insertion disturbances. The component is housed in an SOIC-8 package.

Specialized Feature Summary

• Prevents data and clock corruption during live board insertion and removal from backplanes
• Incorporates digital ENABLE input and open-drain READY output for connection status indication
• Provides high-impedance SDA and SCL pins when the power supply is at 0 V

Specialized Applications

• Hot-swapping I/O cards into live backplanes in cPCI, VME, and Advanced TCA systems
• PCI system hot-swapping applications
• I2C bus repeater or extender configurations

Specialized Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the package type. The W suffix indicates an 8-pin wide SOIC package. Confirm compliance with RoHS directives and lead-free requirements as specified by the manufacturer. Ensure the procurement channel is authorized to maintain product integrity and warranty coverage.

Specialized Selection Notes

Select this component when designing systems requiring hot-swappable I/O capabilities on I2C or SMBus networks. The device isolates card capacitance from the backplane, simplifying rise-time requirements. Verify that the system pull-up resistors meet the minimum slew rate requirements to activate the internal rise-time accelerators effectively.

Specialized Part Context

This part belongs to the PI6ULS5V9511A series of hot-swappable buffers. The AWEX designation specifically identifies the 8-pin Wide SOIC (SOIC-8) package variant. Other variants in the series include MSOP-8 and UDFN-8 packages, offering flexibility for different PCB layout constraints.

Specialized Replacement Considerations

Direct replacements must match the SOIC-8 package and support hot-swappable I2C/SMBus buffering. Verify pinout compatibility and ensure the substitute component meets the 2.7 V to 5.5 V supply voltage range and 400 kHz frequency specifications.