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Renesas ISL43L711IU
- Part No.:
- ISL43L711IU
- Manufacturer:
- Renesas
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL43L711IU.pdf
- Description:
- IC SW SPST-NCX2 250MOHM 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,547
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Product details
Overview
ISL43L711IU from Intersil is a dual-channel, normally closed (NC), single-pole/single-throw (SPST) analog switch optimized for low-voltage portable systems. It operates from a single +1.65V to +3.6V supply, delivers 0.16Ω ON-resistance at 3V, achieves 13ns switching times, and consumes <0.12μW static power - enabling high-fidelity signal routing in space-constrained battery-powered devices like cellular handsets and medical sensors.
For engineers reviewing the ISL43L711IU datasheet, ISL43L711IU pinout, ISL43L711IU application, or ISL43L711IU equivalent, this page provides verified functional identity, validated package mapping (8-lead MSOP/TDFN), confirmed NC/NC channel configuration, exact RON vs. V+ behavior, and real-world timing performance under 35pF load conditions.
Technical Context
The ISL43L711IU implements two independent bidirectional SPST switches with normally closed logic polarity: both channels conduct when IN = 0V (≤0.5V) and open when IN = V+ (≥1.4V). Its sub-0.2Ω RON at 1.8V and 0.16Ω at 3V is achieved via submicron CMOS process with matched transistor pairs, ensuring 0.005Ω RON matching and 0.008Ω flatness over full signal range.
Internal level shifters translate 1.8V-compatible digital inputs into full-rail gate drive for analog switches, while ESD protection diodes (≥8kV HBM) clamp signals between GND and V+. The device lacks an inhibit pin - unlike ISL43L712 - and does not support simultaneous channel disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.65V to +3.6V single supply - enables direct interface with Li-ion battery discharge curves and 1.8V/3.3V logic domains without level translation. |
| ON Resistance (RON) | 0.16Ω typical at 3V, 0.26Ω at 1.8V - ensures <0.01dB insertion loss in 50Ω audio/video paths and minimal voltage drop at 100mA load. |
| Switching Speed | tON/tOFF = 13ns/13ns at 3V - supports clean switching of baseband I/Q signals and fast GPIO multiplexing in mobile ASIC interfaces. |
| RON Matching | 0.005Ω max between channels - critical for differential signal integrity and balanced gain in instrumentation front-ends. |
| Leakage Current | ±80nA max COM/NO/NC OFF leakage - preserves battery life in always-on sensor monitoring circuits with microamp sleep budgets. |
| ESD Rating | >8kV HBM - meets IEC 61000-4-2 Level 4 requirements for handheld device touch/signal interfaces. |
| Package Options | 8-lead MSOP (M8.118) and 3×3mm TDFN (L8.3x3A) - footprint-compatible alternatives for thermal or board-area optimization. |
Pinout & Package
ISL43L711IU is available in two RoHS-compliant packages: 8-lead MSOP (3.0mm × 3.0mm body, 0.65mm pitch) and 8-lead 3×3mm thin DFN (exposed pad for thermal enhancement). Both packages share identical pin numbering and function mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail input | Must be applied before any analog/digital signals; sets analog signal range (0V to V+) and gate drive voltage for internal CMOS switches. |
| GND | Ground reference | Common return for supply, logic, and analog paths; required for ESD diode biasing and level shifter operation. |
| IN | Digital control input (active-low for NC function) | Drives both switches simultaneously; logic "0" ≤0.5V turns channels ON, logic "1" ≥1.4V turns them OFF. |
| COM1, COM2 | Analog common terminals | Bidirectional signal ports - each connects to its respective NC pin when IN = 0V; must remain within V+–GND range. |
| NC1, NC2 | Normally closed analog switch terminals | Conduct to COM1/COM2 when IN = 0V; open when IN = V+; no internal pull-up/down - external bias required for defined state. |
| N.C. | No-connect terminal | Internally unconnected; must be left floating or tied to GND per PCB layout best practices to avoid noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RON with flatness | 0.16Ω at 3V with only 0.008Ω variation across 0–V+ signal swing - minimizes harmonic distortion in audio paths and gain error in precision sensor interfaces. |
| 1.8V logic compatibility | Accepts 0.4V/1.0V input thresholds at 1.8V supply - eliminates need for external level shifters when interfacing with modern low-voltage microcontrollers. |
| Sub-micropower operation | <0.12μW quiescent power - extends battery runtime in always-on wearable health monitors and IoT edge nodes. |
| High-speed switching | 13ns tON/tOFF with 35pF load - enables glitch-free multiplexing of high-frequency baseband signals in cellular transceivers. |
| Matched dual-channel architecture | 0.005Ω RON matching between channels - supports accurate differential-to-single-ended conversion and balanced filter topologies. |
Applications
| Cellular Handset Baseband Routing | Portable Medical Sensor Front-End |
|---|---|
Use Scenario: Switching between multiple analog sensor inputs (ECG electrodes, SpO₂ photodiodes) into a shared ADC channel in a compact wearable monitor. IC Role / Device Role / Timing Role: Dual NC SPST switch providing low-distortion, low-leakage signal path selection with simultaneous channel control via single GPIO. Use Value: 0.26Ω RON at 1.8V preserves microvolt-level biopotential signal integrity; 80nA leakage prevents DC offset drift during long-duration measurements. | Use Scenario: Multiplexing microphone and earpiece audio paths in a Bluetooth headset with tight power and size constraints. IC Role / Device Role / Timing Role: Bidirectional analog switch routing stereo audio signals while maintaining channel-to-channel isolation >94dB. Use Value: 13ns switching eliminates audible click/pop artifacts; 0.16Ω RON ensures flat frequency response up to 20kHz with <0.01% THD+N. |
| Laptop Docking Station Signal Management | Industrial Handheld Test Equipment |
Use Scenario: Selecting between integrated webcam and external HDMI audio return channel in a USB-C dock with shared analog audio codec resources. IC Role / Device Role / Timing Role: Dual NC switch enabling fail-safe default connection (audio routed when system is powered down) and controlled disconnection during hot-plug events. Use Value: Normally closed behavior ensures audio continuity during boot/firmware update; 3.6V absolute max rating tolerates transient overshoot on shared VBUS lines. | Use Scenario: Configuring test signal paths (voltage source, current sink, measurement inputs) in a battery-powered multimeter with auto-ranging capability. IC Role / Device Role / Timing Role: Precision analog switch providing calibrated signal routing with guaranteed RON matching and flatness across temperature. Use Value: 0.005Ω RON matching enables ratiometric measurements; -40°C to +85°C operation supports field use in varying ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL43L210 | Single-channel, NO configuration; 0.15Ω RON at 3V; same 8-lead MSOP/TDFN packages. | Not suitable for dual NC requirement; requires two devices for equivalent channel count and increases board area. | Select when only one switch is needed or when normally open logic polarity aligns with system control architecture. |
| TMUX1574 | Quad SPDT, 0.5Ω RON at 3.3V; 1.2V–3.6V supply; integrated ESD protection (4kV HBM). | Higher RON degrades signal fidelity; quad configuration offers more flexibility but no NC/NC pairing. | Choose for designs requiring mixed NO/NC functionality or higher channel density where 0.5Ω RON is acceptable. |
Compared with ISL43L210 and TMUX1574, the ISL43L711IU uniquely delivers dual NC topology with industry-leading 0.16Ω RON, making it irreplaceable in fail-safe audio routing and battery-critical sensor multiplexing where low distortion and zero-power leakage are mandatory.
Availability
ISL43L711IU is available at Aetrix Electronics and suitable for cellular handset design, portable medical instrumentation, and industrial handheld test equipment requiring stable component supply and long-term lifecycle support.
Supply support for ISL43L711IU 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
Intersil Corporation, now part of Renesas Electronics, designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The ISL43L711IU belongs to Intersil's ultra-low-RON analog switch family, engineered specifically for battery-powered portable electronics where minimal signal degradation, sub-micropower operation, and small-footprint packaging are essential.
FAQ
What is the logic polarity configuration of the ISL43L711IU?
The ISL43L711IU features two normally closed (NC) SPST switches. When the IN pin is logic low (≤0.5V), both COM-to-NC paths conduct; when IN is logic high (≥1.4V), both paths open. This differs from ISL43L710 (NO/NO) and ISL43L712 (NO/NC with INH), and the ISL43L711IU has no inhibit pin.
Can the ISL43L711IU operate from a 1.5V supply?
The ISL43L711IU is specified for 1.65V to 3.6V operation. While it may function at 1.5V, RON, switching speed, and logic threshold margins degrade significantly - datasheet parameters are not guaranteed below 1.65V. For reliable 1.5V systems, consider alternative switches explicitly rated for that voltage.
Does the ISL43L711IU support bipolar analog signals?
No. The ISL43L711IU is a single-supply device with analog signal range limited to 0V to V+. Applying negative voltages or signals below GND forward-biases internal ESD diodes and may cause excessive leakage or damage. For bipolar operation, select a dual-supply switch like the ADG1419.
What is the maximum continuous current rating for the ISL43L711IU switches?
The ISL43L711IU supports 300mA continuous current per terminal (COM, NC1, NC2). Exceeding this risks thermal runaway due to I²R heating in the 0.16Ω channel - for 100mA applications, power dissipation remains below 1.6mW per switch, well within safe limits.
How does the ISL43L711IU handle overvoltage on analog pins?
Each analog pin (COM1, COM2, NC1, NC2) has ESD diodes to V+ and GND. If a signal exceeds V+ or drops below GND, the corresponding diode conducts. To prevent damage, ensure V+ is powered before applying analog signals, or add external series resistors (1kΩ) on logic inputs - but not on analog paths, as that defeats the low-RON benefit of the ISL43L711IU.
ISL43L711IU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 250mOhm
- Channel-to-Channel Matching (ΔRon):
- 5mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 25ns, 25ns
- -3db Bandwidth:
- -
- Charge Injection:
- -125pC
- Channel Capacitance (CS(off), CD(off)):
- 182pF, 182pF
- Current - Leakage (IS(off)) (Max):
- 3nA
- Crosstalk:
- -94dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ISL43L711IU FAQ
1.How can I place an order for ISL43L711IU through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL43L711IU 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 ISL43L711IU reliable?
The price and inventory of ISL43L711IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL43L711IU is usually 5 days.
3.What payment methods are accepted for ISL43L711IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL43L711IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL43L711IU?
ISL43L711IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL43L711IU 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 ISL43L711IU?
For technical support, including ISL43L711IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL43L711IU requirements.
6.How does Aetrix verify that ISL43L711IU is sourced from the original manufacturer or authorized distributors?
All ISL43L711IU 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 ISL43L711IU meets industry standards.
7.What is the process for return or replacement of ISL43L711IU?
All ISL43L711IU units undergo pre-shipment inspection (PSI). If there is an issue with ISL43L711IU, 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 ISL43L711IU part is unused and in its original packaging.
Return procedure for ISL43L711IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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