PI6ULS5V9627AZYEX

Overview

The PI6ULS5V9627A is a CMOS integrated circuit designed for Fast-mode Plus (Fm+) I2C-bus or SMBus applications. It provides bidirectional buffering and level translation between Port A (0.6V to 5.5V) and Port B (2.2V to 5.5V). The device supports up to 1 MHz clock frequency, isolates bus capacitance (up to 4000 pF at lower speeds), and features powered-off high-impedance pins. It accommodates Standard, Fast, and Fast-mode Plus devices with ESD protection exceeding 8000V HBM.

Feature Summary

• Bidirectional buffer isolates capacitance and enables voltage level translation from 0.6V to 5.5V
• Supports arbitration and clock stretching across the repeater without latching issues
• Powered-off high-impedance I2C-bus pins ensure safety during unpowered states

Applications

• Fast-mode Plus (Fm+) I2C-bus systems requiring voltage translation
• SMBus applications including standard and high power modes
• Mixed-mode systems connecting low voltage logic (down to 0.6V) to higher voltage buses

Procurement Notes

Verify the ordering suffix against the manufacturer's datasheet to confirm package type and reel specifications. The ZY suffix indicates a TQFN-16L package in tape and reel format, while QEX denotes QSOP-16L. Ensure compatibility with RoHS3 standards and check for any specific environmental compliance requirements relevant to your manufacturing process before finalizing orders.

Selection Notes

Select this component when interfacing I2C buses with significantly different supply voltages, specifically where one side operates below 2.2V. Ensure the system design accounts for the static offset on Port B drivers and the requirement for external pull-up resistors on both sides of the repeater. Verify that the maximum bus speed requirements align with the propagation delays introduced by the device.

Part Context

This part belongs to the PI6ULS5 series of signal buffers and repeaters manufactured by Diodes Incorporated. It is specifically engineered for I2C and SMBus protocols, offering isolation capabilities that allow for extended trace lengths and increased device counts on a single bus segment compared to standard direct connections.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.