TMUX7234RRQR

Overview

The TMUX7234RRQR is a four-channel, 2:1 single-pole double-throw (SPDT) analog switch manufactured by Texas Instruments. It operates on a single supply voltage ranging from 4.5 V to 44 V or dual supplies from ±4.5 V to ±22 V. The device features latch-up immunity and supports bidirectional analog and digital signals across the full supply range. Key electrical parameters include a maximum on-resistance of 5.8 Ω at 44 V single supply, 3 pC charge injection, and a maximum continuous current of 400 mA in the WQFN package. Logic inputs are compatible with 1.8 V thresholds, and it includes an active-low enable pin.

Feature Summary

• Latch-up immune design prevents high-current events caused by overvoltage conditions.
• Fail-safe logic allows control voltages to be applied before power rails to prevent damage.
• Bidirectional signal paths support rail-to-rail operation for both analog and digital signals.
• Break-before-make switching ensures channels disconnect before connecting to prevent short circuits.

Applications

• Factory automation and control systems
• Programmable logic controllers (PLC)
• Data acquisition systems (DAQ)
• Semiconductor test equipment
• Patient monitoring and diagnostics

Procurement Notes

Verify the specific RRQR suffix indicates the WQFN-20 package configuration when sourcing. Confirm that the component meets RoHS standards as specified in the manufacturer documentation. Ensure compatibility with standard surface-mount assembly processes for the 4 mm x 4 mm footprint. Check for moisture sensitivity levels if storage conditions exceed recommended limits prior to soldering.

Selection Notes

Select this component for applications requiring high-voltage signal routing up to 44 V with low distortion. The four independent SPDT channels allow flexible multiplexing configurations. Consider the thermal performance of the WQFN package for high-power dissipation scenarios. Verify that the 1.8 V logic compatibility matches the system's microcontroller or FPGA output levels.

Part Context

This part belongs to the TMUX72xx family of precision switches designed for harsh environments. The RRQR suffix specifically denotes the 20-pin Wettable Flanks Quad Flat No-leads (WQFN) package. This family emphasizes reliability through latch-up immunity and robust protection against electrostatic discharge events during manufacturing and operation.

Replacement Considerations

The TMUX7234PWR serves as a pin-compatible alternative using a TSSOP-20 package. Both parts share identical electrical characteristics and functionality within the same series. Selection between them depends primarily on board space constraints and thermal management requirements rather than performance differences.