PCA9515APWT

Signal Buffers, Repeaters, Splitters Overview

The PCA9515APWT is a dual bidirectional I2C bus and SMBus repeater manufactured by Texas Instruments. It utilizes BiCMOS technology to extend I2C and similar bus systems without degrading performance. The device features two identical open-drain buffer circuits, enabling mixed-mode signal operation and supporting multiple masters. It operates within a supply voltage range of 2.3 V to 5.5 V and supports standard mode (100 kHz) and fast mode (400 kHz) I2C devices. The component is housed in an 8-pin VSSOP package and functions reliably across a temperature range of -40°C to +85°C.

Signal Buffers, Repeaters, Splitters Feature Summary

• Dual-channel bidirectional buffering for I2C and SMBus compatibility
• Supports mixed-mode signal operation with active-high enable input
• Lockup-free operation accommodating clock stretching and arbitration

Signal Buffers, Repeaters, Splitters Applications

• Extending I2C bus distance in embedded systems
• Connecting multiple masters on a single I2C bus
• Buffering high-capacitance loads on SMBus networks

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix 'PWT' against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure the revision level matches the design requirements, as older revisions may have different electrical characteristics or pinout configurations compared to newer production batches.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when dual-channel isolation or extension of I2C/SMBus lines is required. It is suitable for designs needing support for multiple masters and clock stretching. Compare power consumption and package size against alternatives if space or energy efficiency is critical. Confirm voltage tolerance levels match the system's logic levels.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the PCA95xx family of interface ICs from Texas Instruments, which includes repeaters, switches, and expanders. The PCA9515 series specifically addresses the need for robust I2C bus extension and buffering in complex multi-master environments.

Signal Buffers, Repeaters, Splitters Replacement Considerations

The PCA9515ADT is a documented alternative variant within the same family, offering similar functionality in a different package configuration. Verify pin compatibility and electrical parameters before substitution.