PCA9615DPZ

Signal Buffers, Repeaters, Splitters Overview

The PCA9615DPZ is a two-channel multipoint Fast-mode Plus differential I2C-bus buffer manufactured by NXP Semiconductors. It extends standard single-ended SMBus/I2C-bus connections through electrically noisy environments using a differential dI2C physical layer. The device operates with supply voltages VDD(A) ranging from 2.3 V to 5.5 V and VDD(B) ranging from 3.0 V to 5.5 V. It supports bus speeds up to 1 MHz, features hot-swap logic for module insertion without disruption, and provides ESD protection exceeding 2000 V HBM. The component is housed in a TSSOP10 package.

Signal Buffers, Repeaters, Splitters Feature Summary

• Converts between single-ended I2C/SMBus and differential dI2C transmission lines to reject common-mode noise and ground offsets.
• Supports hot-swap operations allowing card or module insertion/removal without disrupting existing bus data.
• Features automatic signal direction control and bus idle detection to prevent latch-up during connection.
• Provides high-impedance states on powered-off pins and supports multi-drop bus configurations.

Signal Buffers, Repeaters, Splitters Applications

• Monitoring remote temperature or leak detectors in harsh industrial environments
• Controlling power supplies in high-noise settings
• Transmitting I2C-bus signals between equipment cabinets
• Commercial lighting and industrial heating/cooling control systems

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix Z indicates Static Shielding Bag (SSB) packing when sourcing this component. Confirm that the TSSOP10 package version aligns with your PCB footprint requirements. Ensure the design accommodates the dual supply voltage constraints of VDD(A) and VDD(B) as specified in the datasheet.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when extending I2C buses over long distances or through electrically noisy environments where standard single-ended signaling fails. It is suitable for applications requiring ground offset tolerance up to half the supply voltage. Consider the 3-meter cable limit at maximum speed when designing the differential transmission line.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the PCA9615 family of differential I2C-bus buffers. It serves as a bridge between standard wired-OR I2C buses and differential twisted-pair cables. The DPZ variant specifically denotes the TSSOP10 plastic thin shrink small outline package with SSB packing method.

Signal Buffers, Repeaters, Splitters Replacement Considerations

PCA9615DPJ is a drop-in replacement according to PCN 202104008A. Verify pinout compatibility if substituting with other differential I2C buffers from different manufacturers.