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Product Detailed Parameters
- Description：IC SW SPST-NOX4 2.5OHM 16WQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Switch Circuit：SPST - NO
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：2.5Ohm
- Channel-to-Channel Matching (ΔRon)：100mOhm
- Voltage - Supply, Single (V+)：4.5V ~ 44V
- Voltage - Supply, Dual (V±)：±4.5V ~ 22V
- Switch Time (Ton, Toff) (Max)：185ns, 210ns
- -3db Bandwidth：48MHz
- Charge Injection：92pC
- 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 TMUX7211RUMR is a four-channel, single-pole, single-throw (SPST) precision analog switch manufactured by Texas Instruments. It operates with 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 a low on-resistance of 2 Ω and supports bidirectional signal flow between source and drain pins. It includes latch-up immunity and 1.8-V logic compatibility with integrated pull-down resistors on control inputs. Packaged in a 16-pin WQFN (RUM), it functions within an ambient temperature range of -40°C to +125°C.
Feature Summary
- Latch-up immune design prevents high current events caused by overvoltage.
- 1.8-V logic compatible with fail-safe logic and internal pull-down resistors.
- Rail-to-rail operation allows bidirectional analog and digital signal transmission.
Applications
- EV charging station power modules
- Advanced driver assistance systems (ADAS)
- Automotive gateway and head unit systems
- Analog and digital multiplexing or demultiplexing
- Battery management systems (BMS)
Procurement Notes
Verify the specific RUM package variant against the official datasheet to ensure correct pinout and thermal characteristics. Confirm that the logic control requirements align with the Logic Low specification of the TMUX7211 series. Ensure environmental ratings meet the required operating temperature range for the target application.
Selection Notes
Select the TMUX7211RUMR when low leakage current and high precision are required for signal routing. Choose this part over TMUX7212 if the system utilizes Logic Low control signals. Consider the WQFN package for its thermal performance and compact footprint compared to TSSOP options in space-constrained designs.
Part Context
The TMUX7211 belongs to the TMUX721x family of precision switches, which also includes the TMUX7212 and TMUX7213. These devices share similar electrical characteristics but differ in their logic control input requirements. The TMUX7211 specifically requires Logic Low inputs to activate channels, distinguishing it from the Logic High variants within the same product line.
Replacement Considerations
TMUX7212RUMR requires Logic High control inputs instead of Logic Low. TMUX7213RUMR supports both Logic Low and Logic High control inputs. Verify logic level compatibility before substituting these parts to ensure proper channel activation.
