PI6ULS5V9617AUE

Signal Buffers, Repeaters, Splitters Overview

The PI6ULS5V9617A is a CMOS integrated circuit designed for Fast-mode Plus (Fm+) I2C-bus or SMBus applications. It provides bidirectional buffering and level translation between low voltage (0.6V to 5.5V) and higher voltage (2.2V to 5.5V) domains. The device isolates two halves of a bus, accommodating up to 540pF capacitance at 1 MHz or 4000 pF at lower speeds. It supports Standard, Fast, and Fast-mode Plus I2C devices, as well as SMBus and PMBus. Key electrical parameters include VCC(A) range of 0.6V to 5.5V and VCC(B) range of 2.2V to 5.5V. Propagation delays are typically 52ns (B-to-A) and 45ns (A-to-B). ESD protection exceeds 8000V HBM.

Signal Buffers, Repeaters, Splitters Feature Summary

• Bidirectional buffer isolates capacitance and enables voltage level translation from 0.6V to 5.5V and 2.2V to 5.5V.
• Supports arbitration and clock stretching across the repeater while accommodating multiple masters.
• Powered-off high-impedance I2C-bus pins prevent interference when the device is unpowered.
• Active HIGH enable input referenced to VCC(B) allows system control over the repeater operation.

Signal Buffers, Repeaters, Splitters Applications

• Level shifting between low voltage (down to 0.6V) and higher voltage (2.2V to 5.5V) in mixed-mode I2C systems.
• Extending I2C bus length by providing bidirectional buffering for SDA and SCL lines.
• Connecting multiple I2C devices or longer trace lengths by isolating bus capacitance.

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific package variant required, such as MSOP-8, SOIC-8, or TDFN-8, as ordering suffixes determine the physical form factor. Confirm that the application environment remains within the specified operating temperature range of -40°C to +85°C. Ensure supply voltages adhere to the defined limits for Port A and Port B to maintain functional integrity and avoid exceeding absolute maximum ratings during procurement planning.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring translation between very low voltage logic (0.6V) and standard 3.3V or 5V buses. It is suitable for applications needing bus isolation to manage high capacitance loads. Ensure the design accommodates the static offset on Port B drivers if connecting directly to other similar repeaters. Verify that pull-up resistor values align with the desired bus speed and drive strength requirements for the specific I2C mode.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the PI6ULS series of signal buffers and repeaters manufactured by Diodes Incorporated. It serves as a footprint and functional replacement for the PI6ULS5V9617A at Fast-mode speeds. The device is part of the Interface ICs category, specifically addressing I2C and SMBus connectivity challenges in complex embedded systems.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The datasheet identifies the PI6ULS5V9617A as a footprint and functional replacement for itself at Fast-mode speeds. No alternative substitute part numbers are documented in the provided source material.

Signal Buffers, Repeaters, Splitters FAQ

How does the device handle power-up sequences?

The PI6ULS5V9617A includes a power-up circuit that keeps output drivers off until VCC(B) exceeds 2.2V and internal references settle. VCC(B) and VCC(A) can be applied in any sequence.

What is the behavior of Port B drivers regarding low levels?

Port B drivers have a static level offset, resulting in a LOW output of approximately 0.55V. This buffered low prevents lockup but means Port B cannot be connected in series with another Port B side of a similar device.

Can multiple PI6ULS5V9617A devices be connected together?

Yes, multiple devices can be connected in a star topology by linking their Port A sides. They can also be connected in series by linking Port A to Port B, limited only by delay considerations.