TPT29306-VS1R

Translators, Level Shifters Overview

The TPT29306-VS1R is a dual bidirectional I2C and SMBus voltage-level translator manufactured by 3PEAK. It operates with VREF1 from 1.0 V to 3.6 V and VREF2 from 1.65 V to 5.5 V, supporting Standard-mode (SM), Fast-mode (FM), and Fast-mode Plus (FM+) protocols. The device features an enable (EN) input for switching isolation and provides propagation delays of less than 1.5 ns. It includes ESD protection exceeding ±4 kV HBM and ±1 kV CDM. The component is housed in an MSOP-8 package and functions within an ambient temperature range of -40°C to +85°C.

Translators, Level Shifters Feature Summary

• Bidirectional voltage translation between low-voltage and high-voltage domains without requiring a direction control pin
• Integrated enable (EN) input allows switching the translator on or off to isolate bus segments
• High electrostatic discharge (ESD) protection ratings for robust signal integrity
• Low on-state resistance ensures minimal propagation delay for high-speed data transmission

Translators, Level Shifters Applications

• I2C, SMBus, PMBus, MDIO, UART, and Low-Speed SDIO 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 specific part number suffix matches the required package type, as the TPT29306 family includes multiple options such as MSOP-8, VSSOP-8, DFN1.4x1.0-8, and DFN3x4-8. Confirm the operating temperature range aligns with system requirements, noting that the standard version supports -40°C to +85°C. Ensure design implementation accounts for the mandatory 200-kΩ pull-up resistor on the VREF2 pin to prevent excessive current draw and ensure reliable operation.

Translators, Level Shifters Selection Notes

Select this component when interfacing I2C devices operating at different supply voltages, such as translating between 1.8 V and 3.3 V or 5 V. The absence of a direction pin simplifies circuit design compared to discrete transistor solutions. Consider the total bus capacitance on both sides, which must remain under 400 pF to maintain signal integrity. Verify that the EN pin configuration meets the system's need for continuous operation or dynamic bus isolation.

Translators, Level Shifters Part Context

The TPT29306 belongs to 3PEAK's analog signal chain product line, specifically designed for level shifting applications. It serves as a direct replacement for similar dual-channel translators in mixed-voltage environments. The device integrates symmetric electrical characteristics for SCL and SDA channels, ensuring consistent performance across both data lines. It is characterized for industrial and commercial applications requiring reliable communication between master and slave devices.

Translators, Level Shifters Replacement Considerations

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

Translators, Level Shifters FAQ

How should the VREF2 and EN pins be connected?

The EN pin and VREF2 pin must be shorted together and then connected to the VCC2 power supply through a 200-kΩ pull-up resistor.

What is the maximum allowable bus capacitance?

The sum of the capacitive load on both sides of the TPT29306 device must be kept under 400 pF to comply with standard I2C bus limits.

Can the device operate with push-pull outputs?

If either output is push-pull, data signals must be unidirectional, or the outputs must be 3-state capable with direction control to prevent contention.