PI6ULS5V9627AQEX

Overview

The PI6ULS5V9627AQEX is a CMOS integrated circuit designed for Fast-mode Plus (Fm+) I2C-bus or SMBus applications. It provides bidirectional buffering and voltage level translation between Port A (0.6V to 5.5V) and Port B (2.2V to 5.5V). The device supports up to 4000 pF bus capacitance at lower speeds and isolates two halves of a bus for both voltage and capacitance. It features open-drain inputs/outputs, powered-off high-impedance pins, and ESD protection exceeding 8000V HBM. Operating temperatures range from -40°C to +85°C.

Feature Summary

• Bidirectional buffer isolates capacitance and allows 540pF on either side of the device at 1 MHz and up to 4000 pF at lower speeds
• Voltage level translation from 0.6V to 5.5V and from 2.2V to 5.5V
• Port A operating supply voltage range of 0.6V to 5.5V with normal levels( 0.4VCC(A) + 0.8 V ≤ VCC(B) )
• Port B operating supply voltage range of 2.2V to 5.5V with static offset level

Applications

• Fast-mode Plus (Fm+) I2C-bus applications
• SMBus applications
• Mixed-mode applications requiring level shifting between low voltage and higher voltage buses

Procurement Notes

Verify the ordering suffix 'Q' corresponds to the QSOP-16L package configuration as specified in the manufacturer's documentation. Confirm that the component meets RoHS3 compliance requirements if applicable to your manufacturing process. Ensure proper handling procedures are followed due to the sensitivity of the CMOS technology used in this interface IC.

Selection Notes

Select this component when designing systems that require isolation between different voltage domains on an I2C or SMBus network. Consider the specific capacitance limits and propagation delays when determining the maximum allowable bus speed. Evaluate the need for active HIGH repeater enable inputs to manage bus arbitration and clock stretching effectively across multiple masters.

Part Context

This part belongs to the PI6ULS5 series of signal buffers and repeaters manufactured by Diodes Incorporated. It is specifically engineered for interface ICs requiring robust voltage translation capabilities. The device complements other components in mixed-voltage environments where standard logic levels cannot directly communicate without potential damage or data corruption.

Replacement Considerations

PI6ULS5V9627AZYEX

FAQ

What is the difference between Port A and Port B voltage ranges?

Port A operates from 0.6V to 5.5V, accommodating lower voltage logic swings, while Port B operates from 2.2V to 5.5V and includes a static offset level.

How does the device handle powered-off states?

The I2C-bus pins remain in a high-impedance state when the PI6ULS5V9627A is unpowered, preventing interference with other devices on the bus.

Can multiple PI6ULS5V9627A devices be connected in series?

Yes, multiple devices can be connected in series provided that Port A is connected to Port B, though the number of devices is limited by repeater delay considerations.