SN74CBT3245CPW

Overview

The SN74CBT3245CPW is an octal FET bus switch manufactured by Texas Instruments. It features a single 8-bit bidirectional configuration within a 20-pin TSSOP package. The device supports a supply voltage range of 2.3V to 3.6V and operates across temperatures from -40°C to +85°C. Key electrical parameters include a maximum on-resistance of 12 ohms, a propagation delay of 150 ps, and a maximum power supply current of 3 µA. It provides powered-off protection and signal path translation capabilities.

Feature Summary

• Octal FET bus switch architecture providing eight independent bidirectional channels
• Powered-off protection prevents leakage currents when the device is unpowered
• Signal path translation capability allows operation between different voltage domains
• Low quiescent current design minimizes power consumption during standby

Applications

• Portable equipment requiring low-voltage bus switching
• Consumer electronics utilizing multiple voltage levels
• Computing modules needing high-speed data transfer
• Telecommunications infrastructure with mixed-signal interfaces

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout compatibility and electrical characteristics. Ensure the ordering part number matches the required package style and temperature rating. Cross-reference manufacturer datasheets for any recent product change notices that may affect specifications or availability.

Selection Notes

Select this component for designs requiring bidirectional data flow control in low-voltage environments. The 2.3V to 3.6V operating range suits applications where standard 5V logic is not feasible. Consider the 12-ohm on-resistance for signal integrity requirements and the 150 ps delay for timing-sensitive buses. Verify thermal performance within the specified industrial temperature range.

Part Context

This component belongs to the SN74CBT3245C series of digital bus switches. It is designed as a low-voltage solution for managing data paths in compact electronic systems. The TSSOP-20 package facilitates surface-mount assembly for space-constrained printed circuit boards.

Replacement Considerations

SN74CBT3245CPWR

FAQ

Does the SN74CBT3245CPW support powered-off protection?

Yes, the device includes powered-off protection to prevent leakage currents when the supply voltage is absent.

What is the maximum propagation delay for this bus switch?

The maximum propagation delay is specified as 150 picoseconds.