TCA9517DR

Translators, Level Shifters Overview

The TCA9517DR is a dual bidirectional voltage-level translating I2C bus repeater manufactured by Texas Instruments. It operates within a supply voltage range of 900 mV to 5.5 V and supports clock frequencies up to 400 kHz. The device features a propagation delay of 141 ns and an input capacitance of 8 pF. It draws 1 mA of operating current and functions reliably between -40°C and +85°C. Packaged in an SOIC-8 surface-mount format, it facilitates signal buffering and level translation for I2C and SMBus interfaces.

Translators, Level Shifters Feature Summary

• Provides dual bidirectional voltage-level translation for I2C and SMBus communication lines
• Functions as a signal buffer and repeater to extend bus distance and increase drive capability
• Supports operation across a wide supply voltage range from 900 mV to 5.5 V

Translators, Level Shifters Applications

• Interfacing I2C buses with different voltage domains
• Extending I2C bus length in embedded systems
• Increasing the number of nodes on an I2C bus

Translators, Level Shifters Procurement Notes

Verify the specific datasheet revision and package marking codes against the manufacturer's official documentation before integration. Confirm that the SOIC-8 footprint matches your PCB layout requirements. Ensure the operating temperature range meets your system's environmental specifications. Cross-reference the part number suffix with the manufacturer's ordering information to confirm availability and manufacturing status.

Translators, Level Shifters Selection Notes

Select this component when designing systems requiring voltage translation between low-voltage logic and higher-voltage I2C peripherals. Consider its 400 kHz speed limit for standard mode applications. Evaluate the 141 ns propagation delay against your timing constraints. Compare its power consumption and package size against alternative repeaters if space or energy efficiency is critical.

Translators, Level Shifters Part Context

This device belongs to the TCA9517 series of I2C bus repeaters. It is designed to overcome limitations of standard I2C buses regarding node count and cable length. The DR suffix indicates a tape-and-reel packaging option suitable for automated assembly processes. It serves as a solution for complex multi-voltage embedded architectures.

Translators, Level Shifters Replacement Considerations

The PCA9517 is a related device offering similar functionality with a faster propagation delay of 67 ns. Verify compatibility if upgrading for speed. Check for pin-to-pin equivalence and ensure voltage levels remain within specified limits for both source and destination buses.