SN74CBTLV3251RGYR

Overview

The SN74CBTLV3251RGYR is a single-pole double-throw analog switch manufactured by Texas Instruments, housed in a 16-VQFN package. It operates on a single power supply ranging from 2.3 V to 3.6 V. The device features an 8-channel configuration with a maximum on-resistance of 7 Ohms and a bandwidth of 200 MHz. Propagation delays are specified at a maximum of 6.4 ns for turn-on and 6.8 ns for turn-off. It supports rail-to-rail data I/O ports and includes Ioff functionality to prevent backflow current when powered down. The component functions within a temperature range of -40°C to +85°C.

Feature Summary

• Supports rail-to-rail data I/O port switching for versatile signal routing
• Includes Ioff protection to maintain high-impedance output states during power-down
• Utilizes FET switch architecture for low on-resistance and minimal signal attenuation

Applications

• Signal channel switching in communication equipment such as base stations and routers
• Signal routing in industrial control systems including PLCs and multi-channel data acquisition
• Audio and video signal switching in consumer electronics
• I2C/SPI bus multiplexing in server and storage devices

Procurement Notes

Verify the specific suffix RGYR to confirm the 16-VQFN package and reel packaging format. Ensure the design accommodates the 2.3 V to 3.6 V operating voltage range. Confirm moisture sensitivity level (MSL) handling requirements for surface-mount assembly processes. Check for RoHS compliance status if required by local regulations.

Selection Notes

Select this component for designs requiring low-voltage operation between 2.3 V and 3.6 V. The 16-VQFN package suits space-constrained applications. Consider the 200 MHz bandwidth and low propagation delay for high-speed signal integrity. Verify that the 7 Ohm on-resistance meets the signal loss requirements of the application circuit.

Part Context

This part belongs to the SN74CBTLV3251 series of low-voltage multiplexer switches. It shares functional similarities with other members of the CBTLV family but is distinguished by its specific 1x8:1 configuration and VQFN packaging. It serves as a digital alternative to mechanical relays in compact electronic systems.

Replacement Considerations

SN74CBTLV3251PWR offers identical functionality in a TSSOP-16 package. SN74CBTLV3251D/DR provides the same performance in a SOIC-16 package. For 5V systems, the SN74CBT3251 series is functionally compatible but requires a different supply voltage range.