TMUX6219DGKRQ1

Overview

The TMUX6219DGKRQ1 is a single-channel, 2:1 (SPDT) analog switch manufactured by Texas Instruments. It operates on a single supply voltage ranging from 4.5 V to 36 V, or dual supplies of ±4.5 V to ±18 V. The device supports bidirectional analog and digital signals across source and drain pins within the supply range. Key electrical parameters include a maximum on-resistance of 2.9 Ohms, a maximum propagation delay of 170 ns, and a maximum power dissipation of 460 mW. It functions reliably within an operating temperature range of -40°C to +125°C and is housed in an 8-pin VSSOP package.

Feature Summary

• Supports flexible power configurations including single, dual, and asymmetric supply voltages for broad system integration.
• Features low on-resistance to minimize signal attenuation and maintain high signal integrity during transmission.
• Includes integrated pull-down resistors on logic inputs to prevent floating states and reduce external component requirements.
• Provides fault-safe logic control allowing input voltage application even when power rails are unpowered.

Applications

• Automotive sensor signal routing
• Industrial data acquisition systems
• Test and measurement equipment

Procurement Notes

Verify the specific suffix DGKRQ1 against official Texas Instruments documentation to confirm automotive qualification status and package type. Ensure the ordering information matches the required RoHS compliance and tape-and-reel specifications. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current availability status before procurement.

Selection Notes

Select this component when designing circuits requiring a single SPDT switch capable of handling wide voltage swings up to 36 V. Consider its low on-resistance and fast switching speeds for applications demanding minimal signal distortion. Verify that the 1.8 V logic compatibility aligns with the controlling microcontroller or processor interface levels used in the design.

Part Context

This device belongs to the TMUX621x family of CMOS analog switches, which includes variants like the TMUX6219RQXR. While sharing core architectural features such as wide supply ranges and low leakage, specific suffixes indicate differences in packaging, automotive qualification, or manufacturing lot. The DGKRQ1 variant specifically denotes the VSSOP-8 package configuration tailored for space-constrained automotive applications.

Replacement Considerations

The TMUX6219RQXR serves as a functional alternative within the same series. Engineers should verify pinout compatibility and ensure that any substitute maintains the required 36 V supply rating and SPDT configuration. Confirm that the replacement part meets the same AEC-Q100 automotive reliability standards if used in qualified automotive environments.