TPT29336-VS3R

Translators, Level Shifters Overview

The TPT29336-VS3R is a dual bidirectional I2C, SMBus, and I3C voltage-level translator manufactured by 3PEAK. It operates with VREF1 ranging from 0.9 V to 3.6 V and VREF2 from 1.65 V to 5.5 V. The device supports Standard-mode (SM), Fast-mode (FM), and Fast-mode Plus (FM+) I2C-bus protocols, as well as I3C at up to 12.5 MHz. It features an enable (EN) input for switching between active translation and high-impedance isolation. Propagation delay is less than 1.5 ns maximum. The component is characterized for operation from -40°C to +125°C and is supplied in the VSSOP8 package.

Translators, Level Shifters Feature Summary

• Dual bidirectional translation for SDA and SCL lines without requiring a direction pin
• Supports multi-mode I2C-bus including Standard, Fast, and Fast-mode Plus, plus I3C compatibility
• Provides voltage-level translation between various low-voltage and high-voltage reference pairs
• Features an enable input to isolate ports via high-impedance state when disabled

Translators, Level Shifters Applications

• I2C, I3C, SMBus, PMBus, MDIO, UART, Low-Speed SDIO, and GPIO interfaces
• Servers and storage systems
• Telecom switching equipment and routers
• Personal computers and consumer handsets
• Industrial automation systems

Translators, Level Shifters Procurement Notes

Verify that the ordering suffix VS3R corresponds specifically to the VSSOP8 package variant. Confirm the required tape and reel quantity matches the standard packaging specification of 3000 units per reel. Ensure the selected component meets the RoHS compatible and halogen-free requirements defined by the manufacturer for environmental compliance.

Translators, Level Shifters Selection Notes

Select this component when designing systems requiring bidirectional level shifting between disparate voltage domains on I2C or I3C buses. The device is suitable for applications needing bus isolation capabilities via the EN pin. Consider the total bus capacitance limits, which are stricter for I3C compared to I2C, when determining the number of devices and trace lengths.

Translators, Level Shifters Part Context

The TPT29336 is part of 3PEAK's interface product portfolio, designed for versatile communication bus applications. It serves as a replacement for discrete transistor solutions by offering symmetric design and accurate manufacturing. The device integrates ESD protection and latch-up resistance exceeding industry standards, ensuring reliability in harsh environments.

Translators, Level Shifters Replacement Considerations

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

Translators, Level Shifters FAQ

How does the TPT29336 handle voltage translation without a direction pin?

The device uses a bidirectional clamping configuration where low levels are propagated from one side to another while high levels are blocked, allowing passive pull-up resistors to drive the line high independently on each side.

What is the recommended connection for the VREF2 and EN pins?

For normal operation, the EN pin and VREF2 pin should be shorted together and connected to the VCC2 power supply through a 200-kΩ resistor to establish the correct reference voltage for translation.

What are the bus capacitance limits for I2C and I3C applications using this device?

In I2C applications, the total bus capacitance on both sides must remain under 400 pF. In I3C applications, the limit is stricter, requiring the sum of capacitance on both sides to be under 50 pF.