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Product Detailed Parameters
- Description：44-V LATCH-UP IMMUN 1:1 (SPST
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：SPST - NO
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：1.6Ohm
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：4.5V ~ 44V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：140ns, 150ns
- -3db Bandwidth：22MHz
- Charge Injection：-20pC
- Channel Capacitance (CS(off), CD(off))：45pF, 66pF
- Current - Leakage (IS(off)) (Max)：1nA
- Crosstalk：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-WSON (3x2)
- Number of Circuits：1
- Grade：-
- Qualification：-
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Overview
The TMUX7201RQXR is a single-channel, 1:1 (SPST) CMOS analog switch from Texas Instruments. It operates with a single supply voltage range of 4.5V to 44V or dual supplies ranging from ±4.5V to ±22V. The device features latch-up immunity and supports bidirectional signal paths on the source and drain pins. Key electrical parameters include a maximum on-resistance of 1.2Ω at 25°C, low charge injection of -10pC, and an operating temperature range from -40°C to +125°C. It utilizes 1.8V logic compatible control inputs with integrated pull-down resistors.
Feature Summary
- Latch-up immune design prevents high current events caused by overvoltage.
- Bidirectional signal path supports analog and digital signals across the full supply range.
- Fail-safe logic allows control pin voltages to be applied before power rails.
- Integrated pull-down resistor on logic pins ensures defined states.
Applications
- Optical networking
- Wired networking
- Factory automation and industrial controls
- Semiconductor test equipment
- Ultrasound scanners
Procurement Notes
Verify the specific RQX package variant against the target PCB footprint. Confirm that the 8-pin WSON dimensions match the layout requirements. Ensure the logic level compatibility aligns with the system's control interface. Validate thermal dissipation capabilities for the intended operating environment.
Selection Notes
Select this component when a single SPST switch with high voltage tolerance is required. The 1.2Ω on-resistance suits precision applications. Verify that the 44V maximum rating covers the signal swing. Consider the WSON-8 package size constraints during board design.
Part Context
This part belongs to the TMUX720x family of precision switches. The TMUX7201 specifically provides one channel with active-low logic control. It shares core specifications with the TMUX7202 but differs in logic polarity. The family targets robust performance in harsh industrial environments.
Replacement Considerations
Check for direct substitutes within the TMUX720x series such as the TMUX7202 for logic inversion differences. Verify pinout compatibility if replacing with other TI high-voltage switches like the TMUXHS series. Ensure equivalent on-resistance and voltage ratings are met.
FAQ
What is the logic control input configuration?
The TMUX7201 uses active-low logic on the SEL pin. An internal pull-down resistor is integrated on the logic pin.
Can the signal path be bidirectional?
Yes, the source (S) and drain (D) pins support bidirectional analog and digital signals ranging from VSS to VDD.
How does the fail-safe logic feature work?
It allows voltages on the control pins to be applied before the supply pins are powered, protecting the device from potential damage.
