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Texas Instruments TMUX1101DCKR
- Part No.:
- TMUX1101DCKR
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TMUX1101DCKR.pdf
- Description:
- IC SWITCH SPST X 1 4OHM SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:28,175
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Product details
Overview
TMUX1101DCKR from Texas Instruments is a precision 1:1 (SPST) analog switch with active-high logic control, designed for high-accuracy signal routing in low-leakage applications. It delivers 1.8 Ω on-resistance at 5 V, 3 pA off-leakage, –1.5 pC charge injection, rail-to-rail operation (0 V to VDD), and operates across –40°C to +125°C - enabling use in medical ECG front-ends and industrial DAQ systems.
For engineers reviewing the TMUX1101DCKR datasheet, TMUX1101DCKR pinout, TMUX1101DCKR application, or TMUX1101DCKR equivalent, key selection criteria include leakage-sensitive sample-and-hold performance, sub-2 Ω on-resistance stability over temperature, fail-safe logic behavior, and SC70-5 package compatibility with space-constrained portable instrumentation layouts.
Technical Context
The TMUX1101DCKR implements a complementary CMOS transmission-gate architecture with matched NMOS/PMOS devices to minimize charge injection and ensure bidirectional signal integrity. Its fail-safe logic circuitry allows SEL voltage application prior to VDD, preventing latch-up during power sequencing.
It supports full rail-to-rail analog signal switching (GND to VDD) across 1.08 V–5.5 V supply range, with 1.8 V logic-compatible thresholds (VIH = 1.49 V min at 125°C) ensuring interoperability with modern low-voltage microcontrollers and ADC drivers without level shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | 1.8 Ω typical at VDD = 5 V, 25°C - enables minimal signal attenuation and gain error in precision amplifier feedback paths. |
| Off-leakage current | ±0.005 nA typical at 25°C - preserves accuracy in high-impedance sensor interfaces and sample-and-hold hold capacitors. |
| Charge injection | –1.5 pC - limits voltage glitch on hold capacitors, critical for <16-bit DAQ settling and ECG baseline stability. |
| Supply voltage range | 1.08 V to 5.5 V - supports direct integration with 1.2 V, 1.8 V, 3.3 V, and 5 V system rails without external regulators. |
| Operating temperature | –40°C to +125°C - qualified for industrial PLC I/O modules and automotive cabin-sensing subsystems. |
| Logic compatibility | 1.8 V logic thresholds (VIH ≥ 1.49 V, VIL ≤ 0.87 V at 125°C) - ensures reliable control from ARM Cortex-M0+/M4 GPIOs and low-power FPGAs. |
| ESD rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 requirements for field-deployable test equipment and patient monitors. |
Pinout & Package
TMUX1101DCKR is housed in a 5-pin SC70 (DCK) package - 2.0 mm × 1.25 mm, 0.65 mm pitch, thin-profile surface-mount construction optimized for portable and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D | Drain (I/O) | Bidirectional analog/digital signal terminal; connects to load or downstream circuit; voltage range = GND to VDD. |
| S | Source (I/O) | Bidirectional analog/digital signal terminal; connects to source or upstream circuit; identical voltage and current specs as D. |
| GND | Ground reference | 0 V return path for internal circuitry and decoupling; must be low-impedance connection to system ground plane. |
| SEL | Logic control input | Active-high enable: switch closes when SEL ≥ VIH (1.49 V min); supports direct drive from 1.8 V logic without translation. |
| VDD | Positive supply | Main power rail (1.08–5.5 V); requires 0.1–10 µF ceramic decoupling capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe logic | SEL pin tolerates voltage before VDD power-up - prevents undefined switch state and protects against back-powering during hot-insertion or asymmetric power sequencing. |
| Rail-to-rail signal handling | Supports analog signals from 0 V to VDD without clipping - essential for full-scale sensor output routing in battery-powered gas meters and ultrasound beamformers. |
| Break-before-make switching | Guarantees no momentary short between S and D during transition - eliminates signal crosstalk in multiplexed sensor arrays and programmable gain stages. |
| Ultra-low supply current | 3 nA typical at 25°C - extends battery life in portable ECG recorders and handheld diagnostic tools operating in sleep mode. |
| Low on-resistance flatness | 0.85 Ω typical (25°C) - maintains consistent gain and linearity across full signal swing in precision instrumentation amplifiers. |
Applications
| Electrocardiogram (ECG) Front-End | Programmable Gain Amplifier (PGA) |
|---|---|
Use Scenario: Routing biopotential signals from multiple electrode pairs into a single high-resolution ADC channel while maintaining DC accuracy and low noise. IC Role / Device Role / Timing Role: Precision SPST switch isolating unused electrodes and configuring differential input paths in real time. Use Value: 3 pA off-leakage prevents baseline drift; 1.8 Ω RON minimizes gain error; rail-to-rail operation preserves full ECG amplitude range (±5 mV). |
Use Scenario: Dynamically selecting feedback resistor values in an op-amp-based PGA to achieve programmable gain steps (e.g., 1×, 10×, 100×) without mechanical relays. IC Role / Device Role / Timing Role: Low-charge-injection analog switch controlling feedback network topology during gain reconfiguration. Use Value: –1.5 pC charge injection avoids step-induced transients; break-before-make prevents momentary open-loop instability during switching. |
| Ultrasonic Smart Water Meter | Data Acquisition System (DAQ) |
Use Scenario: Multiplexing ultrasonic transducer pairs for time-of-flight measurement in bidirectional flow sensing, requiring low capacitance and fast settling. IC Role / Device Role / Timing Role: Signal-path isolation switch enabling channel scanning while preserving signal integrity up to 2 MHz. Use Value: 300 MHz bandwidth supports clean pulse transmission; 10 pF CDOFF minimizes loading on high-impedance transducer outputs. |
Use Scenario: Isolating sensor inputs (thermocouples, RTDs, strain gauges) from the ADC during calibration or channel switching to prevent cross-talk and offset corruption. IC Role / Device Role / Timing Role: High-precision analog switch inserted between sensor interface and ADC driver stage. Use Value: ±0.005 nA off-leakage ensures <0.1 µV offset drift in 10 MΩ sensor bridges; 17 pF CON maintains bandwidth >100 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST precision switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMUX1102DCKR | Active-low logic control (SEL = Logic 0 turns switch ON); identical electrical specs, package, and thermal performance. | Requires inverted control signal; suitable where system MCU GPIO defaults to high or where fail-safe default-OFF behavior is preferred. | Select when control logic naturally provides active-low enable or when default-open state is required during reset/power-up. |
| ADG801BRMZ | Higher on-resistance (0.5 Ω typ @ 5 V), higher leakage (100 pA typ), larger MSOP-8 package; lacks fail-safe logic and 1.8 V logic compatibility. | Less suited for ultra-low-leakage medical or battery-critical applications; better for general-purpose industrial switching where size is less constrained. | Choose only if legacy ADG8xx footprint compatibility is required and leakage/charge injection specs are relaxed. |
Compared with TMUX1102DCKR, TMUX1101DCKR offers native active-high control for direct MCU GPIO interfacing; compared with ADG801BRMZ, it delivers 33× lower leakage, 3× lower charge injection, and fail-safe logic - making TMUX1101DCKR the preferred choice for high-fidelity medical and metrology signal paths.
Availability
TMUX1101DCKR is available at Aetrix Electronics and suitable for electrocardiogram (ECG) front-ends, programmable gain amplifiers (PGA), and ultrasonic smart meter designs requiring stable component supply, long-term manufacturability, and guaranteed traceability.
Supply support for TMUX1101DCKR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader focused on analog and embedded processing technologies, with deep expertise in precision signal chain solutions and industrial-grade reliability.
The TMUX1101DCKR belongs to TI's precision switches and multiplexers family, engineered specifically for high-accuracy measurement systems where leakage, charge injection, and on-resistance stability directly impact data integrity and system-level accuracy.
FAQ
What is the maximum supply voltage rating for TMUX1101DCKR?
The absolute maximum supply voltage (VDD) for TMUX1101DCKR is 6 V, but the recommended operating range is 1.08 V to 5.5 V. Operating above 5.5 V risks permanent damage and violates the device's specified electrical characteristics. For robust 5 V system design, a 5.5 V max ensures margin against rail overshoot during transient events.
Does TMUX1101DCKR support bidirectional analog signal routing?
Yes, TMUX1101DCKR supports fully bidirectional analog and digital signal routing between its S and D pins. Its complementary CMOS transmission-gate structure ensures symmetrical on-resistance, leakage, and capacitance in both directions - verified by identical RON, CON, and leakage specs regardless of signal flow direction.
How does the fail-safe logic feature protect TMUX1101DCKR during power sequencing?
Fail-safe logic in TMUX1101DCKR allows the SEL pin to tolerate voltages up to 6 V even when VDD is unpowered or ramping. This prevents unintended switch activation or latch-up during hot-plug events or asymmetric power-up sequences - a critical safeguard in modular test equipment and field transmitter designs.
What is the typical charge injection value for TMUX1101DCKR, and why does it matter?
TMUX1101DCKR has a typical charge injection of –1.5 pC. This parameter quantifies the net charge dumped onto the signal path during switching transitions. In sample-and-hold circuits or high-impedance sensor nodes, excessive charge injection causes voltage glitches and settling errors - –1.5 pC enables sub-16-bit accuracy in DAQ systems with >10 nF hold capacitors.
Can TMUX1101DCKR operate from a 1.2 V supply, and what are the trade-offs?
Yes, TMUX1101DCKR is fully specified down to 1.08 V supply. At 1.2 V, RON increases to 70 Ω (typ), transition time rises to 55 ns (typ), and logic thresholds shift (VIH min = 0.96 V). These trade-offs are acceptable in ultra-low-power always-on monitoring nodes where speed and on-loss are secondary to energy efficiency.
TMUX1101DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 4Ohm
- Channel-to-Channel Matching (ΔRon):
- 850mOhm
- Voltage - Supply, Single (V+):
- 1.08V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- -1.5pC
- Channel Capacitance (CS(off), CD(off)):
- 6pF, 10pF
- Current - Leakage (IS(off)) (Max):
- 80pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TMUX1101DCKR FAQ
1.How can I place an order for TMUX1101DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMUX1101DCKR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMUX1101DCKR reliable?
The price and inventory of TMUX1101DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMUX1101DCKR is usually 5 days.
3.What payment methods are accepted for TMUX1101DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMUX1101DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMUX1101DCKR?
TMUX1101DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMUX1101DCKR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMUX1101DCKR?
For technical support, including TMUX1101DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMUX1101DCKR requirements.
6.How does Aetrix verify that TMUX1101DCKR is sourced from the original manufacturer or authorized distributors?
All TMUX1101DCKR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMUX1101DCKR meets industry standards.
7.What is the process for return or replacement of TMUX1101DCKR?
All TMUX1101DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TMUX1101DCKR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMUX1101DCKR part is unused and in its original packaging.
Return procedure for TMUX1101DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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