SN74CB3Q3251RGYR

Overview

The SN74CB3Q3251RGYR is a single-pole double-throw analog switch manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 3.6 V and features an 8-channel, 1 x 8:1 configuration. The device utilizes a 16-VQFN package with dimensions of 4x3.5 mm. Key electrical specifications include a maximum on-resistance of 7 Ohms, a bandwidth of 200 MHz, and a maximum power supply current of 10 uA. Propagation delays are specified at a maximum of 6.4 ns for turn-on and 6.8 ns for turn-off. The component supports surface mount installation and functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides high-speed signal routing through an 8-channel multiplexer architecture optimized for low-voltage operation.
• Ensures signal integrity with low on-resistance and high bandwidth capabilities suitable for precision applications.
• Incorporates robust protection mechanisms including powered-off isolation to prevent leakage currents during power-down states.

Applications

• Portable consumer electronics requiring efficient signal path management in space-constrained designs.
• Battery-powered devices utilizing low-voltage logic interfaces for data acquisition systems.
• Automotive infotainment and instrument clusters operating under strict thermal and voltage constraints.

Procurement Notes

Verify the specific suffix RGYR corresponds to the 16-VQFN package variant when sourcing. Confirm RoHS compliance status and moisture sensitivity level (MSL 2) requirements against your assembly process standards. Ensure the design accounts for the 2.3 V to 3.6 V supply voltage window to maintain guaranteed electrical performance parameters.

Selection Notes

Select this component for applications demanding low power consumption and high-speed switching within a compact footprint. The 16-VQFN package offers thermal efficiency and board space savings compared to larger packages. Consider the 7 Ohm on-resistance limit when designing for minimal signal attenuation in sensitive analog paths.

Part Context

This part belongs to the SN74CB3Q series, which focuses on automotive-grade reliability and low-voltage compatibility. It serves as a specialized solution for modern embedded systems where traditional 5V components are unsuitable due to shrinking supply voltages and increased integration density requirements in portable hardware.

Replacement Considerations

Cross-reference with SN74CBTLV3251RGYR for similar functionality but verify voltage tolerance differences. Check SN74CBT3251RGYR for standard voltage variants if higher supply rails are acceptable in the target design.