PCA9517DGKR

Signal Buffers, Repeaters, Splitters Overview

The PCA9517DGKR is a dual bidirectional voltage-level translator manufactured by Texas Instruments, housed in an 8-pin TSSOP package. It functions as a level-translating I2C bus repeater compatible with SMBus protocols. The device supports a supply voltage range from 0.9 V to 5.5 V for the A side and 2.7 V to 5.5 V for the B side. It operates at frequencies up to 400 kHz with a propagation delay of 67 ns. The component is rated for industrial temperatures between -40°C and +85°C and draws 1.5 mA of quiescent current.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides bidirectional translation between different voltage domains on I2C and SMBus lines
• Acts as a bus repeater to extend communication distance and isolate faults
• Supports high-speed data transfer rates up to 400 kHz

Signal Buffers, Repeaters, Splitters Applications

• Interfacing microcontrollers operating at lower voltages with sensors or peripherals at higher voltages
• Extending I2C bus length in complex embedded systems
• Isolating faulty downstream devices to protect upstream controllers

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix 'DGKR' against the manufacturer's official datasheet to confirm the TSSOP-8 package and reel packaging specifications. Ensure the component meets RoHS compliance requirements for your target market. Confirm that the device status is active for new designs, as older variants may be obsolete.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when interfacing mixed-voltage I2C buses requiring bidirectional translation. Verify that the voltage levels on both sides fall within the specified 0.9V to 5.5V operational range. Consider the 67 ns propagation delay for timing-sensitive applications and ensure the 400 kHz speed requirement is met.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the PCA9517 family of level-shifting bus repeaters. It serves as a bridge between low-voltage logic and higher-voltage peripheral devices. The DGKR suffix specifically denotes the TSSOP surface-mount package variant offered by Texas Instruments.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The TCA9517 series offers automotive-grade alternatives with similar functionality. Other compatible parts include the PCA9515B for single-supply applications and the PCA9306 for simpler two-wire translation needs.