SN74CBTD3306DRG4

Overview

The SN74CBTD3306DRG4 is a dual FET bus switch from Texas Instruments, featuring level shifting and -2 V undershoot protection. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -40 °C to +85 °C. The device provides two independent channels in an 8-pin SOIC package with a maximum on-resistance of 35 Ω. It delivers high output currents of up to 128 mA at both logic high and low states. Propagation delay is specified at 0.25 ns under 5 V conditions with a 50 pF load.

Feature Summary

• Integrates dual FET bus switches with built-in level shifting capabilities for signal translation between different voltage domains.
• Includes -2 V undershoot protection to ensure reliable operation during power-up or power-down sequences without external clamping diodes.
• Offers low on-resistance to minimize signal attenuation and maintain signal integrity across the bus lines.

Applications

• Level shifting interfaces between 5V and 3.3V logic systems
• Bidirectional data bus switching in communication protocols
• Signal routing in embedded system architectures

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free packaging compliant with RoHS standards as per manufacturer documentation. Confirm that the SOIC-8 package dimensions match the target PCB footprint requirements. Ensure the supply voltage constraints are strictly adhered to within the 4.5 V to 5.5 V range to prevent device damage. Check for any recent Product Change Notifications regarding manufacturing site updates or material substitutions.

Selection Notes

Select this component when bidirectional level shifting is required between 5V and lower voltage domains. The integrated undershoot protection simplifies design by removing the need for external protection diodes. Consider the 35 Ω on-resistance for impedance matching requirements. Verify that the 128 mA drive capability meets the load requirements of the connected circuitry.

Part Context

This part belongs to the SN74CBT series of bus switches designed for high-speed applications. It complements other variants like the SN74CBTD3306D by offering a tape-and-reel option (suffix DR) for automated assembly. The G4 suffix typically denotes environmental compliance features consistent with Texas Instruments' product labeling conventions.

Replacement Considerations

SN74CBTD3306DRE4 is a confirmed equivalent variant with identical electrical specifications and functional characteristics. Both parts share the same core architecture and pinout configuration suitable for direct replacement in existing designs.