PCA9515ADP/DG,118

Signal Buffers, Repeaters, Splitters Overview

The PCA9515ADP/DG,118 is a CMOS integrated circuit designed for I2C-bus and SMBus systems. It functions as a dual-channel bidirectional buffer that extends bus length by buffering both SDA and SCL lines, supporting two buses of 400 pF capacitance. The device operates within a supply voltage range of 2.3 V to 3.6 V and features 5.5 V tolerant I/O pins. It accommodates Standard-mode and Fast-mode devices up to 400 kHz, supports arbitration and clock stretching, and includes an active HIGH enable input with an internal pull-up.

Signal Buffers, Repeaters, Splitters Feature Summary

• Dual-channel bidirectional buffering for I2C and SMBus extension
• Lock-up free operation with static offset design
• Supports mixed-voltage bus architectures (e.g., 3.3 V and 5 V)
• Active HIGH repeater enable input with internal pull-up

Signal Buffers, Repeaters, Splitters Applications

• Extending I2C bus length beyond standard capacitance limits
• Isolating high-speed master buses from slower slave peripherals
• Connecting multiple masters across different voltage domains

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the package designation matches the required footprint, specifically TSSOP8 or MSOP8 variants. Confirm the ordering suffix indicates the correct tape and reel quantity if applicable. Ensure the component date code aligns with manufacturing requirements. Cross-reference the manufacturer part number against the latest NXP datasheet revision to confirm pinout consistency.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when system design requires extending I2C bus capacitance beyond 400 pF or isolating distinct voltage domains. It is suitable for applications needing lock-up-free operation without direction control pins. Verify that the operating frequency does not exceed the repeater's propagation delay limitations at the target supply voltage.

Signal Buffers, Repeaters, Splitters Part Context

This component belongs to the PCA9515A family of I2C bus repeaters manufactured by NXP Semiconductors. It is functionally identical to other suffixes like PCA9515ADP-T but differs in packaging format. The device is part of a broader portfolio including PCA9513A and PCA9516A, distinguished by its specific static offset mechanism preventing lock-up conditions in series configurations.

Signal Buffers, Repeaters, Splitters Replacement Considerations

PCA9515ADP, PCA9515AD, PCA9515ATP.