SN74CBTD3306CPWRG4

Overview

The SN74CBTD3306CPWRG4 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. The device provides two independent channels in an 8-pin TSSOP package. Key electrical characteristics include a maximum on-resistance of 16.5 ohms and a propagation delay of 1.4 ns at 5 V with a 50 pF load. It supports high output currents of up to 128 mA and functions reliably across an industrial temperature range of -40 °C to +85 °C.

Feature Summary

• Integrates level shifting capability for seamless signal translation between different voltage domains.
• Includes built-in -2 V undershoot protection to safeguard against transient voltage spikes.
• Utilizes low on-resistance FET technology to minimize signal attenuation and power loss.

Applications

• High-speed data bus switching in consumer electronics
• Signal routing in portable computing devices
• Interface bridging in industrial control systems

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the 'C' designator corresponds to the specified operating temperature range and package variant. Cross-reference the full part number with official Texas Instruments databases to ensure availability and current manufacturing status before finalizing procurement plans.

Selection Notes

Select this component when designing circuits requiring bidirectional bus switching with integrated level shifting. Ensure the system voltage remains within the 4.5 V to 5.5 V operational window. Consider the 16.5 ohm on-resistance for signal integrity requirements. Verify that the TSSOP-8 package dimensions fit the PCB layout constraints and thermal management needs of the application.

Part Context

This device belongs to the SN74CBT series of digital bus switches. It shares functional similarities with other members like the SN74CBTD3306CDR but differs in packaging and specific environmental ratings. The CBTD series is designed for applications demanding low power consumption and high-speed performance in compact form factors.

Replacement Considerations

The SN74CBTD3306CDR is a documented alternative offering similar functionality in an SOIC package. Verify pin compatibility and thermal performance differences when substituting. Ensure the replacement meets the same voltage and temperature specifications required by the original design.

FAQ

Does the SN74CBTD3306CPWRG4 support bidirectional signal flow?

Yes, as a dual FET bus switch, it allows signals to pass in either direction between the input and output pins when enabled.

What is the purpose of the -2 V undershoot protection?

It protects the internal circuitry from damage caused by negative voltage transients or undershoot events that may occur during signal transitions.