PCA9306DCUTG4

Translators, Level Shifters Overview

The PCA9306DCUTG4 is a dual bidirectional I2C-bus and SMBus voltage-level translator manufactured by Texas Instruments. It operates with VCCA from 1.0V to 3.6V and VCCB from 1.8V to 5.5V, enabling translation between 1.0V and 5V without a direction pin. The device features an enable input, low on-state resistance, and propagation delays of approximately 1.2ns to 1.5ns. It supports standard, fast, and fast-mode plus I2C devices in an 8-pin VSSOP package.

Translators, Level Shifters Feature Summary

• Dual bidirectional voltage translation for I2C and SMBus interfaces
• Automatic direction detection eliminating the need for a control pin
• Low on-state resistance for minimal signal propagation delay
• Enable input to isolate ports when disabled

Translators, Level Shifters Applications

• Connecting 1.0V logic controllers to 5V I2C peripherals
• Interfacing Fast-Mode Plus (400kHz) buses with Standard-Mode (100kHz) devices
• SMBus system level shifting applications

Translators, Level Shifters Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's current product status, as some listings indicate the base model may be discontinued or subject to change. Confirm RoHS compliance details directly with the supplier. Ensure the VSSOP-8 package dimensions match your PCB footprint requirements before finalizing procurement.

Translators, Level Shifters Selection Notes

Select this component when bidirectional translation between dissimilar voltage domains is required without complex control logic. It is suitable for systems needing automatic bus direction handling. Note that it does not physically isolate bus capacitance like a buffer; use separate pull-up resistors for each side of the translator to ensure proper operation across different voltage levels.

Translators, Level Shifters Part Context

This part belongs to the PCA9306 family of voltage translators. It is distinct from bus buffers like the PCA9509 because it only isolates capacitance when disabled. The device allows running two buses at different frequencies, provided the lower frequency bus is isolated during high-speed operations to prevent timing conflicts caused by propagation delays.

Translators, Level Shifters Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.