SN74CBT3245CRGYR

Overview

The SN74CBT3245CRGYR is an octal FET bus switch manufactured by Texas Instruments, designed for high-speed data transmission in 5-V systems. It features a single output-enable (OE) input to control the connection between Port A and Port B. The device supports bidirectional data flow with low on-resistance of 12 ohms maximum and propagation delay of 150 ps. It operates within a voltage range of 4 V to 5.5 V and includes -2-V undershoot protection. Packaged in a 20-VQFN (3.5x4.5 mm) format, it functions across temperatures from -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent 1:1 SPST channels for parallel data switching
• -2-V undershoot protection capability ensuring reliable operation during signal transitions
• Powered-off protection mechanism preventing current leakage when the device is unpowered
• Single OE control input simplifies interface logic for enabling or disabling all channels simultaneously

Applications

• High-speed data buses requiring low capacitance and fast switching speeds
• Portable applications utilizing battery power where low standby current is critical
• Consumer electronics involving multiple voltage domains and signal routing
• Computing peripherals needing efficient bidirectional data transfer between components

Procurement Notes

Verify the specific package marking and revision status against the official Texas Instruments datasheet before integration. Confirm that the -2-V undershoot protection aligns with system signal integrity requirements. Ensure the 20-VQFN footprint matches the PCB layout design rules. Check RoHS compliance documentation for environmental regulations. Validate thermal performance under maximum operating conditions.

Selection Notes

Choose this component for applications demanding high bandwidth up to 200 MHz and minimal signal distortion. The low on-resistance ensures efficient power delivery across the bus. Consider the 20-VQFN package size for space-constrained designs. Evaluate the ESD rating of 1 kV for robustness in sensitive environments. Compare against other series members if different pin counts or voltage ranges are needed.

Part Context

This part belongs to the SN74CBT3245C family of digital bus switches. It shares functional similarities with variants like SN74CBT3245CPWR but differs in packaging. The CRGYR suffix indicates the specific 20-VQFN reel-packaged version. It complements other Texas Instruments logic devices in mixed-signal systems.

Replacement Considerations

SN74CBT3245CRGYRG4 is a verified equivalent variant within the same product line. Both parts share identical electrical specifications and functionality. Verify pin compatibility and package dimensions before substitution. Ensure the replacement meets the same temperature and voltage ratings.