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Product Detailed Parameters
- Description：IC SW SPST-NCX4 3.1OHM 16WQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Switch Circuit：SPST - NC
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：3.1Ohm
- Channel-to-Channel Matching (ΔRon)：100mOhm
- Voltage - Supply, Single (V+)：4.5V ~ 36V
- Voltage - Supply, Dual (V±)：±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max)：180ns, 200ns
- -3db Bandwidth：50MHz
- Charge Injection：78pC
- Channel Capacitance (CS(off), CD(off))：28pF, 45pF
- Current - Leakage (IS(off)) (Max)：1nA
- Crosstalk：-93dB @ 1MHz
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-WQFN Exposed Pad
- Supplier Device Package：16-WQFN (4x4)
- Number of Circuits：4
- Grade：-
- Qualification：-
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Overview
The TMUX6212RUMR is a precision analog switch IC featuring four independent 1:1 single-pole, single-throw (SPST) channels. It operates on a single supply from 4.5 V to 36 V or dual supplies from ±4.5 V to ±18 V. The device supports bidirectional signal flow with rail-to-rail operation and low on-resistance of 2 Ω typical at 25°C. Logic control inputs are compatible with 1.8 V logic levels and include integrated pull-down resistors. It functions within an ambient temperature range of -40°C to +125°C and utilizes a 16-pin WQFN package.
Feature Summary
- Four independently selectable SPST channels with bidirectional signal support
- Wide power supply compatibility for single and dual configurations
- Integrated pull-down resistors on logic pins for fail-safe operation
- Low on-resistance and leakage currents suitable for precision applications
Applications
- Sample-and-hold circuits
- Feedback gain switching
- Signal isolation
- Data acquisition systems (DAQ)
- Patient monitoring and diagnostics
Procurement Notes
Verify the specific ordering suffix RUMR corresponds to the WQFN-16 package and reel packaging configuration before procurement. Confirm that the logic high control requirement aligns with system design, as this variant activates switches upon receiving a high logic level. Ensure ESD precautions are maintained during handling due to the CMOS construction.
Selection Notes
Select the TMUX6212RUMR when a logic-high active control scheme is required for the SPST channels. Compare against TMUX6211 for logic-low activation or TMUX6213 for mixed logic requirements. Evaluate thermal dissipation limits in the WQFN package if operating near maximum current ratings or elevated temperatures.
Part Context
This component belongs to the TMUX621x family of precision switches manufactured by Texas Instruments. The family includes variants with different logic activation schemes but shares similar electrical characteristics regarding voltage ranges and on-resistance. The RUMR suffix specifically denotes the WQFN-16 surface-mount package with reel packaging.
Replacement Considerations
TMUX6211RUMR requires logic-low activation instead of logic-high. TMUX6213RUMR supports both logic states. Verify pinout compatibility and ensure the replacement part matches the required logic polarity for SELx pins.
