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Renesas ISL43L712IR-T
- Part No.:
- ISL43L712IR-T
- Manufacturer:
- Renesas
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
ISL43L712IR-T.pdf
- Description:
- IC SW SPST-NO/NCX2 250MOHM 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,667
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Product details
Overview
ISL43L712IR-T from Intersil is a dual-channel, differential SPST analog switch with one normally open (NO) and one normally closed (NC) switch, enabling SPDT functionality with integrated inhibit control. It operates from a single +1.65V to +3.6V supply, delivers 0.16Ω typical ON-resistance at 3V, 13ns turn-on/turn-off times, and <0.12μW power consumption - optimized for signal routing in battery-powered mobile audio and sensor interfaces.
For engineers reviewing the ISL43L712IR-T datasheet, ISL43L712IR-T pinout, ISL43L712IR-T application, or ISL43L712IR-T equivalent, key selection criteria include its dual-logic-mode switching (NO/NC), simultaneous path disable via INH pin, ultra-low RON flatness (0.008Ω), 1.8V logic compatibility, and 8-lead TDFN package footprint for space-constrained portable designs.
Technical Context
The ISL43L712IR-T implements a submicron CMOS process with bidirectional analog signal paths and integrated level shifters that translate 1.8V-compatible digital inputs (VINH ≥1.4V, VINL ≤0.5V at 3V supply) into full-rail gate drive for the internal transmission gates. Its architecture supports simultaneous control of two independent SPST switches with opposite default states and a dedicated inhibit input that forces both channels OFF regardless of IN logic state.
It features ESD protection diodes on all analog pins (±8kV HBM), operates across –40°C to +85°C, and maintains RON matching ≤0.005Ω between channels - critical for balanced differential signaling and precision multiplexing where channel-to-channel gain/phase tracking matters.
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 and low-voltage ASIC I/O without level translation. |
| ON Resistance (3V) | 0.16Ω typical - minimizes insertion loss and voltage drop in high-current analog paths (e.g., audio line drivers, sensor front-ends). |
| RON Matching | ≤0.005Ω - ensures matched gain and timing between differential or parallel signal paths, reducing skew and distortion. |
| Switching Speed | tON/tOFF = 13ns (3V) - supports high-speed signal routing in digital audio, USB accessory detection, and fast GPIO expansion. |
| Power Consumption | <0.12μW - extends battery life in always-on monitoring circuits and sleep-mode peripheral switching. |
| ESD Rating | >8kV HBM - provides robust handling margin for handheld device assembly and field-replaceable modules. |
| Analog Signal Range | 0V to V+ - allows rail-to-rail signal passage without clipping when powered from 1.8V or 3.3V systems. |
Pinout & Package
ISL43L712IR-T is housed in an 8-lead 3×3 mm thin DFN (TDFN) package (pkg drawing L8.3x3A) with exposed thermal pad, offering low thermal resistance (θJA = 110°C/W) and compact board area for portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input | Drives NO1/NC2 switching logic; compatible with 1.8V CMOS levels (0.5V low / 1.4V high at 3V supply). |
| 2 (NC2) | Normally closed analog terminal | Connected to COM2 when IN = 0; breaks connection when IN = 1 - used for fail-safe or default-path routing. |
| 3 (COM2) | Common analog node for channel 2 | Signal path shared between NC2 and NO1; bidirectional conduction with sub-0.16Ω RON. |
| 4 (GND) | Ground reference | Return path for supply and logic; must be low-impedance to minimize noise coupling into analog channels. |
| 5 (V+) | Positive supply input | Single rail powering analog switches and internal level shifters; absolute max 4.7V accommodates 10% supply overshoot. |
| 6 (COM1) | Common analog node for channel 1 | Signal path shared between NO1 and NC2; electrically isolated from COM2 except through load. |
| 7 (NO1) | Normally open analog terminal | Connected to COM1 only when IN = 1 - enables active signal injection or dynamic function reconfiguration. |
| 8 (INH) | Inhibit control input | When pulled high to V+, forces both NO1 and NC2 into OFF state regardless of IN state - provides system-level safety shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode SPST configuration (NO/NC) | Enables true SPDT behavior using one control pin (IN), eliminating need for external logic inversion in signal path selection. |
| Simultaneous inhibit (INH) function | Guarantees zero signal leakage across both channels during power-up, reset, or fault conditions - critical for medical and safety-critical routing. |
| RON flatness ≤0.008Ω | Maintains consistent gain and phase response over full analog signal range (0–V+), minimizing harmonic distortion in audio and precision sensor signals. |
| 1.8V logic compatibility | Accepts standard low-voltage GPIO outputs without pull-ups or translators - simplifies integration with modern application processors and microcontrollers. |
| Ultra-low charge injection (–125pC) | Reduces transient glitches and settling time in sampled-data systems like ADC front-ends and automatic test equipment multiplexers. |
Applications
| Mobile Audio Routing | ASIC GPIO Expansion |
|---|---|
|
Use Scenario: Switching stereo headphone outputs between baseband processor and auxiliary codec in smartphones. IC Role / Device Role / Timing Role: Dual-channel analog switch providing SPDT-like routing with independent NO/NC paths and hardware inhibit for mute-on-call. Use Value: 0.16Ω RON preserves SNR and output power; 13ns switching enables glitch-free jack detection and fast audio path reconfiguration. |
Use Scenario: Adding analog sensor inputs or microphone bias paths to SoCs with limited dedicated analog I/O pins. IC Role / Device Role / Timing Role: Precision analog multiplexer extending ASIC capability while maintaining signal integrity and low leakage (<80nA). Use Value: RON matching ≤0.005Ω ensures consistent calibration across channels; 1.65V operation supports deep-sleep sensor monitoring. |
| Portable Medical Sensors | USB-C Accessory Detection |
|
Use Scenario: Multiplexing ECG electrode signals into a low-noise instrumentation amplifier in wearable monitors. IC Role / Device Role / Timing Role: Low-distortion, rail-to-rail analog switch isolating patient-connected inputs during measurement cycles. Use Value: Charge injection ≤125pC prevents baseline shift in DC-coupled biopotential amplifiers; 8kV ESD protects against user-handling events. |
Use Scenario: Detecting and routing USB-C CC line configurations (source/sink/orientation) in portable docks and adapters. IC Role / Device Role / Timing Role: Fast, low-RON switch enabling dynamic reconfiguration of CC pull-up/pull-down networks per USB PD spec. Use Value: 13ns tON/tOFF supports rapid orientation detection; INH pin allows coordinated CC line isolation during state transitions. |
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 SPST, no INH pin, same RON (0.16Ω) and supply range; smaller 6-lead TDFN package. | Lacks dual-mode (NO/NC) and inhibit functionality - suitable only for simple on/off routing without fail-safe control. | Select ISL43L210 when space is constrained and SPDT behavior or system-level inhibit is unnecessary. |
| TMUX1574 | 4-channel SPDT, 0.5Ω RON, 1.08V–4.5V supply, no INH pin, higher leakage (100nA), 10-pin WQFN. | Higher channel count but higher RON and no hardware inhibit - better for multi-signal routing where ultra-low resistance is secondary. | Choose TMUX1574 for applications needing >2 switched paths and wider supply flexibility, accepting higher RON and no INH. |
Compared with ISL43L210 and TMUX1574, the ISL43L712IR-T uniquely combines dual-mode NO/NC switching, hardware inhibit, and sub-0.2Ω RON in a compact 8-lead TDFN - making it optimal for space-limited, safety-aware portable systems requiring precise, configurable analog signal control.
Availability
ISL43L712IR-T is available at Aetrix Electronics and suitable for mobile audio routing, ASIC GPIO expansion, portable medical sensors, and USB-C accessory detection requiring stable component supply and long-term design continuity.
Supply support for ISL43L712IR-T 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 focused on power management, precision analog, and interface solutions for industrial, computing, and consumer markets.
The ISL43L712IR-T belongs to Intersil's ultra-low-RON analog switch family engineered specifically for battery-powered portable equipment where minimal power loss, fast switching, and small footprint are essential design constraints.
FAQ
What is the function of the INH pin on the ISL43L712IR-T?
The INH (inhibit) pin on the ISL43L712IR-T provides hardware-level override: when driven high to V+, it forces both the NO1 and NC2 switches into the OFF state regardless of the logic level applied to the IN pin. This feature enables safe power-up sequencing, system reset isolation, or emergency signal blocking - ensuring zero current flow through either analog path during critical fault or initialization conditions. The ISL43L712IR-T relies on this pin for deterministic fail-safe behavior not achievable via software alone.
Can the ISL43L712IR-T operate from a 1.8V supply?
Yes, the ISL43L712IR-T is fully specified to operate from +1.65V to +3.6V, including 1.8V nominal supplies. At 1.8V, it delivers 0.26Ω typical RON, 30ns/25ns tON/tOFF, and maintains 1.8V logic compatibility (VINH ≥1.0V, VINL ≤0.4V). Its submicron CMOS process ensures functional stability down to 1.65V, though RON and speed degrade predictably - verified in the datasheet's 1.8V electrical specifications table. The ISL43L712IR-T thus supports direct integration with 1.8V I/O domains without level shifters.
How does the ISL43L712IR-T achieve SPDT functionality with only two switches?
The ISL43L712IR-T achieves SPDT-like behavior by integrating one normally open (NO1) and one normally closed (NC2) switch sharing a common node (COM1/COM2), controlled by a single IN pin. When IN = 0, NC2 conducts and NO1 is open; when IN = 1, NO1 conducts and NC2 opens - creating complementary signal paths. Unlike discrete SPDTs, this architecture avoids internal shorts and eliminates need for external logic, while the dedicated INH pin adds a third state (both OFF). This dual-mode topology is intrinsic to the ISL43L712IR-T's pinout and truth table.
What is the maximum analog signal voltage the ISL43L712IR-T can handle?
The ISL43L712IR-T supports analog signal voltages from 0V to V+ (rail-to-rail), with absolute maximum ratings allowing signals up to (V+ + 0.3V) or –0.3V due to internal ESD diode clamping. For reliable operation, signals must remain within the supply rails - e.g., 0–3.3V when V+ = 3.3V. Exceeding V+ risks forward-biasing protection diodes, increasing leakage and potentially damaging the device. The ISL43L712IR-T's design assumes proper supply sequencing (V+ applied before analog signals), as detailed in its overvoltage protection guidelines.
Is the ISL43L712IR-T pin-compatible with other devices in the ISL43L71X family?
Yes, the ISL43L712IR-T shares identical 8-lead TDFN (L8.3x3A) and MSOP (M8.118) footprints with ISL43L710 and ISL43L711, and uses the same pinout numbering and functions - including V+, GND, IN, COM1, COM2, NO1, NC2, and INH. However, internal switch configuration differs: ISL43L710 has two NO switches, ISL43L711 has two NC switches, while ISL43L712IR-T integrates one NO and one NC with INH. Thus, PCB layout is interchangeable, but firmware logic must match the specific NO/NC behavior of the ISL43L712IR-T.
ISL43L712IR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO/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-TDFN (3x3)
ISL43L712IR-T FAQ
1.How can I place an order for ISL43L712IR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL43L712IR-T 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 ISL43L712IR-T reliable?
The price and inventory of ISL43L712IR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL43L712IR-T is usually 5 days.
3.What payment methods are accepted for ISL43L712IR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL43L712IR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL43L712IR-T?
ISL43L712IR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL43L712IR-T 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 ISL43L712IR-T?
For technical support, including ISL43L712IR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL43L712IR-T requirements.
6.How does Aetrix verify that ISL43L712IR-T is sourced from the original manufacturer or authorized distributors?
All ISL43L712IR-T 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 ISL43L712IR-T meets industry standards.
7.What is the process for return or replacement of ISL43L712IR-T?
All ISL43L712IR-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL43L712IR-T, 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 ISL43L712IR-T part is unused and in its original packaging.
Return procedure for ISL43L712IR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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