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Renesas ISL43L111IHZ-T
- Part No.:
- ISL43L111IHZ-T
- Manufacturer:
- Renesas
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
ISL43L111IHZ-T.pdf
- Description:
- IC SW SPST-NCX1 220MOHM SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,913
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Product details
Overview
ISL43L111IHZ-T from Intersil is a single-pole/single-throw (SPST) analog switch with normally closed (NC) configuration, operating from a single +1.1V to +4.5V supply. It delivers ultra-low 0.21 Ω ON-resistance at 4.3V, 8ns turn-on time, and 0.03 Ω RON flatness-enabling high-fidelity signal routing in space-constrained portable audio and sensor interfaces.
For engineers reviewing the ISL43L111IHZ-T datasheet, ISL43L111IHZ-T pinout, ISL43L111IHZ-T application, or ISL43L111IHZ-T equivalent, this device supports low-voltage battery-powered designs requiring sub-1V logic compatibility, <200nA leakage across –40°C to +85°C, and SC70-5 footprint compatibility with MAX4715/4716 drop-in alternatives.
Technical Context
The ISL43L111IHZ-T implements a CMOS transmission-gate architecture with integrated level-shifting logic, enabling 1.8V CMOS-compatible control (VINH ≥1.4V at 3V supply) while maintaining bidirectional analog signal integrity. Its substrate is tied to GND, and ESD protection diodes are placed between each analog pin and both V+ and GND.
Operation below 1.8V degrades RON (2.4 Ω typical at 1.1V) and increases tON (41ns), but retains functional switching down to 1.1V. The device cannot operate with bipolar supplies due to negative logic threshold shift, and analog signal range is strictly limited to 0V–V+.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +1.1V to +4.5V single supply - enables direct integration into Li-ion, coin-cell, and low-power MCU I/O domains without level translation. |
| RON (Typical) | 0.21 Ω at V+ = 4.3V - minimizes voltage drop and power loss in high-current analog paths (e.g., audio line drivers, sensor multiplexing). |
| RON Flatness | 0.03 Ω over full signal range - ensures consistent gain and THD performance across varying input amplitudes in precision signal chains. |
| tON/tOFF | 8ns / 5ns at V+ = 3.9V - supports high-speed multiplexing in data acquisition and RF front-end switching up to ~100MHz bandwidth. |
| Leakage Current | <200nA max (NO/NC OFF) - preserves signal integrity in high-impedance sensor nodes and medical electrode interfaces. |
| ESD Rating | >4kV HBM - provides robust handling margin for handheld assembly and field-replaceable modules without external protection. |
| Package | 5-lead SC70 (2.1 × 1.35 × 0.9 mm) - reduces PCB area by >50% vs. SOT-23, critical for ultra-thin mobile and wearable form factors. |
Pinout & Package
ISL43L111IHZ-T uses a 5-lead SC70 plastic package (JEDEC MO-203AA, EIAJ SC70 compliant) with 0.65mm lead pitch and exposed pad not present. Thermal resistance θJA is 660°C/W on standard FR-4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail input | Must be applied before any logic or analog signals; sets analog signal range (0V to V+) and internal gate drive strength. |
| GND | Ground reference | Substrate connection point; all ESD diodes and internal logic return here - requires low-impedance layout tie to system ground plane. |
| IN | Digital control input | CMOS-compatible logic pin; "0" ≤0.5V, "1" ≥1.4V at 3V supply - drives internal level shifter to toggle NC path state. |
| COM | Analog common terminal | Bidirectional signal port; connects to NC pin when IN = 0, disconnects when IN = 1 - must remain within V+/GND bounds. |
| NC | Normally closed analog terminal | Remains conductive to COM at logic low; breaks connection at logic high - used for default-path signal routing (e.g., standby audio channel). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RON at 1.8V | 0.45 Ω typical - maintains usable analog path resistance even in 1.8V I/O domains, avoiding signal attenuation in mixed-voltage SoC interfaces. |
| RON flatness | 0.03 Ω over full analog range - eliminates amplitude-dependent distortion in audio, medical, and measurement applications requiring flat frequency response. |
| Charge injection | 52pC typical at 1.8V - limits voltage glitch on high-impedance nodes (e.g., SAR ADC sample capacitors), reducing need for blanking or calibration. |
| Off isolation | –65dB at 100kHz - suppresses crosstalk between adjacent channels in multi-signal portable equipment like smartphone camera modules. |
| 1.1V minimum operation | Functional switching at 1.1V supply - supports emerging ultra-low-power microcontrollers and energy-harvesting systems where 1.2V LDOs are marginal. |
Applications
| Portable Audio Routing | Medical Sensor Multiplexing |
|---|---|
|
Use Scenario: Switching between multiple microphone inputs or headphone outputs in smartphones and wireless earbuds. IC Role / Device Role / Timing Role: NC-configured analog switch providing default audio path continuity during boot or fault states. Use Value: 0.21 Ω RON prevents insertion loss in 16Ω headphone loads; 8ns switching enables seamless channel handover without audible pop. |
Use Scenario: Selecting among ECG, SpO₂, and temperature sensor front-ends in wearable health monitors. IC Role / Device Role / Timing Role: Low-leakage (≤200nA) NC switch isolating unused sensor paths to preserve bias stability and reduce noise coupling. Use Value: Sub-1μA total supply current and 0.03 Ω RON flatness ensure accurate DC-coupled biopotential measurements across temperature ranges. |
| Low-Voltage Test Equipment | ASIC I/O Expansion |
|
Use Scenario: Signal path selection in handheld multimeters and portable oscilloscope probes operating from single-cell batteries. IC Role / Device Role / Timing Role: SPST NC switch enabling automatic range switching and calibration loop closure without mechanical relays. Use Value: 1.1V operation allows direct interface to 1.2V LDO outputs; 68pF COFF minimizes loading on high-Z probe inputs. |
Use Scenario: Adding analog GPIO capability to ASICs with limited pin count or unsuitable process geometry for analog switches. IC Role / Device Role / Timing Role: External NC switch extending ASIC functionality while preserving die size and yield. Use Value: Drop-in compatibility with MAX4715/4716 simplifies legacy design reuse; SC70 footprint avoids board re-spin in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4716EUT+T | Same NC function, 0.22 Ω RON at 4.5V, but 12ns/8ns tON/tOFF; no 1.1V operation support. | Requires ≥1.8V supply - unsuitable for sub-1.2V energy harvesting or deep-sleep wake-up circuits. | Select MAX4716EUT+T only when higher speed is unnecessary and existing 3V/5V infrastructure dominates. |
| ISL43L210IHZ-T | Intersil-recommended replacement; dual SPST (1 NO + 1 NC), identical RON, tON/tOFF, and SC70-5 package - pinout differs due to extra channel. | Provides redundancy or complementary switching in same footprint - requires PCB layout change for second channel use. | Choose ISL43L210IHZ-T when future design scalability or dual-path routing is anticipated; otherwise retain ISL43L111IHZ-T for minimal BOM and layout impact. |
Compared with MAX4716EUT+T, ISL43L111IHZ-T offers wider supply range and faster switching; compared with ISL43L210IHZ-T, it provides simpler single-channel control and direct pinout compatibility for legacy ISL43L111 layouts.
Availability
ISL43L111IHZ-T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered test equipment, and ultra-thin consumer electronics requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for ISL43L111IHZ-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 is a precision analog and power management solutions provider, acquired by Renesas Electronics in 2017. Its products target industrial, infrastructure, and high-end consumer markets with emphasis on reliability and low-power innovation.
The ISL43L111IHZ-T belongs to the ISL43L11X ultra-low-RON analog switch family, designed specifically for space- and power-constrained portable electronics where signal fidelity, supply flexibility, and small footprint are critical.
FAQ
What is the minimum supply voltage required for functional operation of the ISL43L111IHZ-T?
The ISL43L111IHZ-T operates down to +1.1V, with verified switching functionality and specified RON (2.4 Ω typical), tON (41ns), and leakage (<7nA) at that rail. Below 1.1V, performance is not characterized and may fail to meet datasheet limits. This makes ISL43L111IHZ-T suitable for direct connection to single-cell Li-ion or NiMH battery systems under discharge conditions.
How does the ISL43L111IHZ-T behave during power-up sequencing?
The ISL43L111IHZ-T requires V+ to be established before applying logic or analog signals. Its internal ESD diodes connect each pin to V+ and GND; violating this sequence risks forward-biasing those diodes and causing excessive current. For robust operation, apply V+ first, then digital control (IN), then analog signals (COM/NC). A 1kΩ series resistor on IN adds protection if sequencing cannot be guaranteed.
Is the ISL43L111IHZ-T pin-compatible with the MAX4715 or MAX4716?
Yes - the ISL43L111IHZ-T is explicitly documented as a drop-in replacement for the MAX4716 (NC version), sharing identical SC70-5 pinout, electrical behavior, and footprint. It is not pin-compatible with the MAX4715 (NO version), which shares the same package but swaps NC for NO functionality. Layouts designed for MAX4716 require no changes to accommodate ISL43L111IHZ-T.
What is the maximum continuous current rating for the ISL43L111IHZ-T analog path?
The ISL43L111IHZ-T supports ±300mA continuous current through COM, NC, or both pins simultaneously. This rating applies across the full operating temperature range (–40°C to +85°C) and supply range (+1.1V to +4.5V). Peak pulsed current is ±600mA (1ms, 10% duty cycle), useful for short-duration sensor excitation or LED driving in portable systems.
Does the ISL43L111IHZ-T support bipolar analog signal swings?
No - the ISL43L111IHZ-T is a single-supply device with analog signal range strictly limited to 0V to V+. Signals exceeding either rail forward-bias internal ESD diodes, risking latch-up or damage. It cannot handle AC-coupled or true bipolar signals (e.g., ±2.5V) without external level-shifting circuitry. For such applications, consider dual-supply switches or external bias networks.
ISL43L111IHZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 220mOhm (Typ)
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 1.1V ~ 4.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 15ns, 10ns
- -3db Bandwidth:
- -
- Charge Injection:
- 89pC
- Channel Capacitance (CS(off), CD(off)):
- 68pF
- Current - Leakage (IS(off)) (Max):
- 30nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
ISL43L111IHZ-T FAQ
1.How can I place an order for ISL43L111IHZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL43L111IHZ-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 ISL43L111IHZ-T reliable?
The price and inventory of ISL43L111IHZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL43L111IHZ-T is usually 5 days.
3.What payment methods are accepted for ISL43L111IHZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL43L111IHZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL43L111IHZ-T?
ISL43L111IHZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL43L111IHZ-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 ISL43L111IHZ-T?
For technical support, including ISL43L111IHZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL43L111IHZ-T requirements.
6.How does Aetrix verify that ISL43L111IHZ-T is sourced from the original manufacturer or authorized distributors?
All ISL43L111IHZ-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 ISL43L111IHZ-T meets industry standards.
7.What is the process for return or replacement of ISL43L111IHZ-T?
All ISL43L111IHZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL43L111IHZ-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 ISL43L111IHZ-T part is unused and in its original packaging.
Return procedure for ISL43L111IHZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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