PCA9617ADPJ

Signal Buffers, Repeaters, Splitters Overview

The PCA9617ADPJ is a CMOS integrated circuit providing level shifting between low voltage (0.8 V to 5.5 V) and higher voltage (2.2 V to 5.5 V) Fast-mode Plus I2C-bus or SMBus applications. It features two bidirectional buffers for data and clock lines, enabling bus extension with up to 540 pF capacitance at 1 MHz. The device supports Standard, Fast, and Fast-mode Plus speeds, includes an active HIGH enable pin referenced to VCC(B), and offers overvoltage tolerant pins. It operates within a temperature range of -40 °C to +85 °C and is housed in an 8-lead TSSOP package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides bidirectional buffering for SDA and SCL lines to isolate voltage levels and extend bus capacitance
• Supports voltage translation from 0.8 V to 5.5 V on Port A and 2.2 V to 5.5 V on Port B
• Features powered-off high-impedance I/O pins and overvoltage tolerance up to 5.5 V
• Includes an active HIGH enable input referenced to VCC(B) for system control

Signal Buffers, Repeaters, Splitters Applications

• Level translating between low voltage and higher voltage I2C-bus systems
• SMBus and PMBus applications requiring voltage isolation
• Systems supporting multiple controllers and arbitration across the repeater

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix 'J' corresponds to the standard reel packing method as documented in the manufacturer's ordering information table. Confirm that the component meets the required RoHS compliance standards and environmental declarations specified for the PCA9617ADP series before finalizing procurement specifications.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring translation between adjustable low voltages down to 0.8 V and fixed higher voltages like 3.3 V or 5 V. Ensure the application utilizes open-drain configurations with appropriate pull-up resistors on both ports. Verify that the operating frequency requirements align with the device's Fast-mode Plus capabilities and propagation delay characteristics.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the PCA9617A family of Level Translating Fm+ I2C-bus Repeaters manufactured by NXP Semiconductors. It serves as a functional replacement for the PCA9517A at Fast-mode speeds while offering expanded voltage support. The device is designed to maintain all I2C-bus operating modes during level shifts without degrading system performance.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The TCA9617ADGKR from Texas Instruments is listed as a direct substitute for this component.