TMUX7211PWR

Overview

The TMUX7211PWR is a four-channel, low-leakage-current precision analog switch with 1:1 (SPST) configuration in a 16-pin TSSOP package. It operates on single supplies from 4.5 V to 44 V or dual supplies from ±4.5 V to ±22 V. The device features an on-resistance of 2 Ω at 25°C and supports bidirectional signal flow. Logic inputs are compatible with 1.8-V logic levels and include integrated pull-down resistors. It provides latch-up immunity and functions across an ambient temperature range of -40°C to +125°C.

Feature Summary

• Latch-up immune design prevents high current events caused by overvoltage
• Integrated pull-down resistors on logic pins ensure fail-safe operation
• Bidirectional signal path supports rail-to-rail voltage ranges
• Compatible with 1.8-V logic control inputs

Applications

• EV charging station power modules
• Advanced driver assistance systems (ADAS)
• Automotive gateway and body control modules
• Analog and digital multiplexing or demultiplexing
• Battery management systems (BMS)

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and tape-and-reel specifications. Confirm that the component meets all required environmental and electrical standards for the intended deployment environment before finalizing procurement orders.

Selection Notes

Select the TMUX7211PWR when logic-low activation is required for the SPST channels. Compare the continuous current ratings against the thermal dissipation limits of the TSSOP-16 package under expected operating temperatures. Ensure the supply voltage differential remains within the specified 4.5 V to 44 V range for reliable performance.

Part Context

This component belongs to the TMUX721x family of precision switches manufactured by Texas Instruments. The family includes variants with different logic activation requirements, such as the TMUX7212 for logic-high activation and the TMUX7213 for combined logic support. All members share similar electrical characteristics and latch-up immunity features.

Replacement Considerations

The TMUX7212RUMR serves as a functional substitute if logic-high activation is acceptable. Verify pin compatibility and on-resistance specifications before replacing the original part in existing circuit designs.

FAQ

What is the maximum continuous current supported by the TMUX7211PWR?

The device supports up to 220 mA per channel at a +44 V dual supply and 25°C ambient temperature.

How does the TMUX7211PWR handle overvoltage conditions?

It features latch-up immunity, which prevents undesirable high current events between parasitic structures typically caused by overvoltage.

What logic level is required to activate the switches?

The TMUX7211 requires a logic-low signal on the SEL pins to activate the switches, and it is compatible with 1.8-V logic levels.