SN74CBT3251RGYR

Overview

The SN74CBT3251RGYR is a single 8-to-1 multiplexer/demultiplexer manufactured by Texas Instruments. It operates on a single power supply ranging from 4.5V to 5.5V. The device is housed in a 16-VQFN package with dimensions of 4x3.5mm and features a bare pad for thermal dissipation. It supports surface mount installation and functions within an operating temperature range of -40°C to +85°C. The component is RoHS3 compliant, classified under EAR99, and has a moisture sensitivity level of 2 (1 year).

Feature Summary

• Configured as a single 8:1 multiplexer or demultiplexer circuit.
• Designed for operation with a single power supply voltage source.
• Utilizes a compact 16-pin VQFN package with exposed thermal pad.

Applications

• Data routing in digital signal processing systems
• Address decoding in memory architectures
• Signal selection in communication interfaces

Procurement Notes

Verify the specific ordering suffix to confirm the tape and reel quantity matches project requirements. Confirm that the 16-VQFN footprint aligns with the PCB layout design. Ensure the 4.5V to 5.5V supply voltage range is compatible with the system power rails. Check RoHS3 compliance status if required by environmental regulations. Validate the Moisture Sensitivity Level 2 handling procedures during assembly.

Selection Notes

Select this component when a single 8-channel switching path is required at standard 5V logic levels. The VQFN package is suitable for space-constrained surface-mount designs. Verify that the input voltage levels are compatible with the 5V supply domain. Consider the thermal performance of the exposed pad if high current switching is anticipated. Compare against other 74CBT series devices if different channel counts or voltage ranges are needed.

Part Context

This part belongs to the Texas Instruments 74CBT series of bus switches and multiplexers. These components are designed for low-voltage applications requiring fast switching speeds. The RGYR suffix indicates the specific VQFN packaging and reel configuration. The base model SN74CBT3251 defines the 8:1 mux functionality.

Replacement Considerations

SN74CBT3251RGYRG4 is a verified equivalent variant with identical electrical specifications and pinout.