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Renesas ISL43144IR
- Part No.:
- ISL43144IR
- Manufacturer:
- Renesas
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
ISL43144IR.pdf
- Description:
- IC SWITCH SPST-NOX4 25OHM 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,883
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Product details
Overview
ISL43144IR from Renesas (formerly Intersil) is a quad SPST analog switch with four normally open (NO) channels, designed for precision signal routing in low-voltage, battery-powered systems. It operates from single +2V to +12V or dual ±2V to ±6V supplies, delivers 18Ω max RON at ±4.5V, 52ns tON/40ns tOFF, and <2.5nA max off-leakage at 85°C - enabling high-fidelity audio/video switching and portable medical sensor multiplexing.
For engineers reviewing the ISL43144IR datasheet, ISL43144IR pinout, ISL43144IR application, or ISL43144IR equivalent, key selection criteria include its 16-lead QFN package, guaranteed RON matching (<2Ω), 5nA typical leakage, TTL/CMOS-compatible control, and suitability for 3V/5V/12V rail designs where low power (<1μW) and fast settling are critical.
Technical Context
The ISL43144IR implements CMOS transmission-gate architecture with independent digital control per channel, supporting both single-supply (V− tied to GND) and split-supply operation. Its level-shifting logic interface ensures consistent 0.8V/2.4V thresholds across V+ = 2.5V–10V, while internal ESD diodes (2000V HBM) clamp analog pins between V+ and V−.
Signal integrity is maintained via 5Ω max RON flatness over full analog range, 71dB OFF isolation at 1MHz, and −89dB crosstalk - all validated under ±4.5V, 5V, 3.3V, and 12V supply conditions. The device exhibits monotonic RON reduction and tON/tOFF improvement as supply voltage increases, with no break-before-make timing (exclusive to ISL43145).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RON Max | 18Ω at ±4.5V - ensures minimal signal attenuation in 50Ω systems and preserves gain accuracy in op-amp networks |
| tON/tOFF | 52ns/40ns at ±4.5V - enables reliable sampling of >10MHz signals in ATE and ultrasound front-ends |
| Off-Leakage Max | 2.5nA at 85°C - prevents DC error accumulation in high-impedance sensor interfaces and precision DAC/ADC paths |
| Supply Range | Single: +2V to +12V; Dual: ±2V to ±6V - supports direct integration with Li-ion, 3.3V, 5V, and 12V rails without level shifters |
| Charge Injection | 5pC max - limits voltage glitch on sampled-hold capacitors, critical for 12-bit+ data acquisition systems |
| OFF Isolation | 71dB at 1MHz - suppresses RF feedthrough in communications base stations and XDSL line cards |
| Crosstalk | −89dB at 1MHz - isolates adjacent channels in multi-signal medical monitoring equipment |
Pinout & Package
ISL43144IR is housed in a 16-lead QFN package (4mm × 4mm, 0.5mm pitch) with exposed thermal pad. Pin numbering follows standard top-view orientation; pin 1 is marked by dot or chamfered corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 4, 15 | COM1–COM4 | Analog common terminals - connect to signal source or load; each independently switched to corresponding NO pin |
| 2, 12, 13, 16 | NO1–NO4 | Normally open analog outputs - conduct only when respective INx = logic low (0 ≤ 0.8V) |
| 5, 6, 7, 8 | IN1–IN4 | Digital control inputs - TTL/CMOS compatible; drive internal level shifters to gate CMOS transmission paths |
| 9 | V+ | Positive supply rail - sets upper analog voltage limit and powers internal logic/level shifters |
| 10 | GND | Ground reference - used for single-supply configuration; not connected in dual-supply mode |
| 11 | V− | Negative supply rail - sets lower analog voltage limit; tie to GND for single-supply operation |
| 14 | N.C. | No internal connection - must be left floating or grounded per layout best practices |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent SPST NO switches | Enables simultaneous routing of four separate analog signals without interaction or shared timing constraints |
| 18Ω RON matching across channels | Guarantees ≤2Ω ΔRON - essential for matched-gain amplifier networks and differential signal paths |
| 5nA typical off-leakage at 25°C | Minimizes input bias current errors in high-Z transducer interfaces and electrocardiograph front-ends |
| 2000V HBM ESD protection | Eliminates need for external TVS diodes in handheld barcode scanners and field-deployable test gear |
| Pb-free RoHS-compliant packaging | Meets IPC/JEDEC J-STD-020 MSL Level 1 - supports lead-free reflow without moisture sensitivity concerns |
Applications
| Audio Signal Routing | Portable Medical Monitoring |
|---|---|
Use Scenario: Switching between multiple microphone inputs or headphone outputs in ultra-low-power voice recorders and hearing aids. IC Role / Device Role / Timing Role: Quad SPST NO switch providing isolated analog path selection with sub-100ns settling for real-time audio streaming. Use Value: 18Ω RON and 5pC charge injection preserve SNR >95dB; <1μW quiescent power extends battery life beyond 12 months. | Use Scenario: Multiplexing ECG electrode signals into a single ADC channel in wearable cardiac monitors. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling of 4 leads with minimal DC offset drift and leakage-induced baseline wander. Use Value: 2.5nA max off-leakage at 85°C prevents >1mV input error; 71dB OFF isolation rejects 50Hz mains coupling between channels. |
| Industrial Data Acquisition | Communications Base Station Front-End |
Use Scenario: Channel selection in 16-bit SAR ADC systems measuring thermocouple, RTD, and voltage inputs in PLC modules. IC Role / Device Role / Timing Role: Low-RON, low-leakage analog switch ensuring <0.01% gain error and <1LSB integral nonlinearity contribution. Use Value: 5Ω RON flatness maintains linearity across ±10V input range; −89dB crosstalk prevents inter-channel interference during simultaneous sampling. | Use Scenario: RF "Tee" switching between transmit/receive paths and antenna diversity circuits in small-cell LTE infrastructure. IC Role / Device Role / Timing Role: High-isolation analog switch handling up to +12V signal swing while maintaining impedance match in 50Ω RF traces. Use Value: 71dB OFF isolation at 1MHz scales to >40dB at 2GHz; 12V-rated RON (14Ω typ.) ensures minimal insertion loss in PA output stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL43120IHZ-T | Single-pole/dual-throw (SPDT), 3.5Ω RON at 5V, 20ns tON, 10-pin MSOP | Provides break-before-make switching and lower RON, but lacks quad independent control and QFN thermal performance | Preferred for space-constrained SPDT designs requiring faster switching; not pin-compatible with ISL43144IR |
| ADG1414BRUZ | Quad SPST NO, 1.8Ω RON at ±15V, 16-lead TSSOP, higher supply voltage rating | Supports ±15V operation and lower RON, but consumes 25μW and has 10nA leakage - less suitable for battery operation | Selected when bipolar ±15V signal routing is required and ultra-low leakage is secondary to RON performance |
Compared with ISL43144IR, ISL43120IHZ-T offers superior speed and SPDT functionality in smaller footprint but sacrifices channel count and thermal efficiency; ADG1414BRUZ provides lower RON and wider voltage range at cost of higher power and leakage - making ISL43144IR optimal for quad-channel, low-power, 3–12V portable systems.
Availability
ISL43144IR is available at Aetrix Electronics and suitable for battery-powered handheld equipment, portable medical devices, and industrial data acquisition systems requiring stable component supply and long-term lifecycle support.
Supply support for ISL43144IR 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
Renesas Electronics Corporation acquired Intersil in 2017 and continues to support high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets.
The ISL43144IR belongs to Renesas' precision analog switch product line, engineered for low-voltage, low-power signal routing in portable and medical instrumentation where leakage, RON flatness, and fast switching are design-critical.
FAQ
What is the maximum supply voltage rating for the ISL43144IR?
The ISL43144IR supports absolute maximum ratings of V+ to V− ≤ 15V, with operational ranges spanning single +2V to +12V or dual ±2V to ±6V. At 12V single supply (V− = GND), it delivers 14Ω typical RON and 40ns/27ns switching times - making ISL43144IR suitable for legacy 12V industrial systems without derating.
Does the ISL43144IR require external pull-up or pull-down resistors on its digital inputs?
No, the ISL43144IR features TTL/CMOS-compatible digital inputs with guaranteed VIH ≥ 2.4V and VIL ≤ 0.8V across V+ = 2.5V–10V. Its input structure draws <1μA at valid logic levels, eliminating need for external biasing - a key advantage in low-power ISL43144IR deployments like battery-operated ultrasound probes.
How does the ISL43144IR handle analog signals exceeding the supply rails?
The ISL43144IR integrates ESD protection diodes from each analog pin (COM, NO) to V+ and V−. If an analog signal exceeds V+ or falls below V−, the corresponding diode conducts - limiting voltage excursion but potentially increasing leakage. For overvoltage robustness beyond ±0.3V, external series resistors or clamping diodes are recommended per Figure 8 in the ISL43144IR datasheet.
Can the ISL43144IR be used in a single-supply configuration with V− unconnected?
No - V− must be explicitly tied to GND in single-supply mode. Leaving V− floating violates absolute maximum ratings and risks latch-up or parametric failure. The ISL43144IR datasheet specifies V− to GND = 0V as mandatory for +2V to +12V operation; this connection establishes the lower analog signal bound and powers internal substrate bias circuitry.
What is the thermal resistance (θJA) of the ISL43144IR in its QFN package?
The ISL43144IR in 16-lead QFN (L16.4x4) has a typical junction-to-ambient thermal resistance (θJA) of 75°C/W when mounted on a high-thermal-conductivity PCB with direct-attach features. This is significantly lower than the 150°C/W of the TSSOP variant, enabling sustained 30mA channel current operation at 85°C ambient without derating - critical for dense ISL43144IR-based multiplexer layouts.
ISL43144IR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Bag
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- ±2.6V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 65ns, 50ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC (Max)
- Channel Capacitance (CS(off), CD(off)):
- 10pF, 26pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -89dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (4x4)
ISL43144IR FAQ
1.How can I place an order for ISL43144IR through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL43144IR 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 ISL43144IR reliable?
The price and inventory of ISL43144IR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL43144IR is usually 5 days.
3.What payment methods are accepted for ISL43144IR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL43144IR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL43144IR?
ISL43144IR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL43144IR 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 ISL43144IR?
For technical support, including ISL43144IR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL43144IR requirements.
6.How does Aetrix verify that ISL43144IR is sourced from the original manufacturer or authorized distributors?
All ISL43144IR 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 ISL43144IR meets industry standards.
7.What is the process for return or replacement of ISL43144IR?
All ISL43144IR units undergo pre-shipment inspection (PSI). If there is an issue with ISL43144IR, 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 ISL43144IR part is unused and in its original packaging.
Return procedure for ISL43144IR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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