My Inquiry
My Account
Renesas ISL43L120IU
- Part No.:
- ISL43L120IU
- Manufacturer:
- Renesas
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL43L120IU.pdf
- Description:
- IC SW SPST-NOX2 250MOHM 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,437
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL43L120IU from Intersil is a dual normally-open (NO) single-pole/single-throw (SPST) analog switch optimized for low-voltage, low-power portable systems. It operates from a single +1.65V to +3.6V supply, delivers 0.16Ω ON-resistance at 3V, 13ns switching time, <0.12µW power consumption, and supports 1.8V logic-compatible control - enabling high-fidelity signal routing in space-constrained mobile audio and sensor interfaces.
For engineers reviewing the ISL43L120IU datasheet, ISL43L120IU pinout, ISL43L120IU application, or ISL43L120IU equivalent, this device is selected for ultra-low RON, minimal charge injection (−125pC), tight RON matching (0.005Ω), and MSOP-8 packaging in battery-powered handheld equipment requiring bidirectional analog signal switching with minimal distortion.
Technical Context
The ISL43L120IU integrates two independent CMOS SPST switches with matched channel architecture, driven by internal level shifters that translate 1.8V logic inputs into full-rail gate control under single-supply operation. Its submicron CMOS process ensures precise RON flatness (0.008Ω) and low leakage (<80nA) across the analog signal range (0V to V+).
Each switch exhibits symmetrical bidirectional conduction, with ESD protection diodes on all analog pins (NO, COM, NC) referenced to V+ and GND. The device requires V+ sequencing prior to signal application to prevent forward biasing of internal clamps - a critical constraint for system-level power-up coordination in portable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.65V to +3.6V single supply - enables direct integration with Li-ion battery and 1.8V/3.3V logic domains without level translation. |
| ON Resistance (RON) | 0.16Ω typical at 3V - minimizes insertion loss and voltage drop in precision analog paths (e.g., audio line drivers, sensor multiplexing). |
| RON Matching | 0.005Ω max between channels - ensures balanced gain and phase response in differential or dual-path signal routing. |
| Switching Time (tON/tOFF) | 13ns/13ns at 3V - supports high-speed multiplexing in data acquisition and RF front-end switching up to ~175MHz bandwidth. |
| Charge Injection | −125pC typical - reduces glitch-induced settling errors in sample-and-hold and ADC input conditioning circuits. |
| ESD Rating (HBM) | >8kV - provides robust handling margin for assembly and field operation in consumer handheld environments. |
| Logic Compatibility | 1.8V CMOS input thresholds (VINH ≥ 1.4V, VINL ≤ 0.5V at 3V supply) - interoperable with modern low-voltage ASIC GPIOs without external translators. |
Pinout & Package
ISL43L120IU is housed in an 8-lead MSOP package (JEDEC MO-187AA, pkg drawing M8.118), measuring 3.0mm × 3.0mm × 1.1mm, with exposed thermal pad for enhanced power dissipation in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Digital control input | Active-high logic inputs controlling respective NO switches; compatible with 1.8V CMOS levels and require V+ applied before signal assertion. |
| COM1, COM2 | Analog common terminal | Bidirectional current path shared between NO and COM; supports full-rail analog signals from 0V to V+. |
| NO1, NO2 | Analog normally-open switch terminal | Open-circuit when IN = 0; connects to COM when IN = 1 - used for signal enable/gating functions in audio routing or sensor selection. |
| V+ | Positive supply rail | Single power source for analog switches and internal logic; absolute max 4.7V allows margin for 3.6V supply tolerance and noise spikes. |
| GND | Ground reference | Return path for supply and signal currents; must be connected before applying any analog or digital signals to avoid ESD diode conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RON flatness | 0.008Ω over full signal range - preserves signal integrity in wide-dynamic-range applications like microphone preamp switching. |
| Dual independent SPST topology | Two isolated NO switches - enables concurrent routing of separate analog signals (e.g., stereo audio channels or dual sensor inputs) without crosstalk. |
| Sub-100nA leakage performance | ±80nA max COM ON leakage - critical for high-impedance sensor interfaces and battery-life-sensitive always-on monitoring circuits. |
| Pb-free MSOP-8 packaging | RoHS-compliant 3×3mm footprint with annealed matte tin terminations - supports lead-free reflow and meets IPC/JEDEC J-STD-020 MSL3 requirements. |
| High-frequency isolation | 62dB OFF isolation at 100kHz - suppresses unwanted feedthrough in RF-adjacent analog subsystems such as cellular baseband signal chains. |
Applications
| Mobile Audio Routing | Sensor Multiplexing |
|---|---|
Use Scenario: Switching between multiple microphones or headphone outputs in smartphones and wearables. IC Role / Device Role / Timing Role: Dual NO analog switch providing bidirectional, low-distortion signal path selection with simultaneous channel control. Use Value: 0.16Ω RON and 0.008Ω RON flatness minimize THD+N degradation; 13ns switching prevents audible click/pop artifacts during real-time audio reconfiguration. |
Use Scenario: Selecting among temperature, pressure, and accelerometer sensors in portable medical monitors. IC Role / Device Role / Timing Role: Low-leakage (±80nA) analog multiplexer enabling high-impedance sensor signal routing to a shared ADC input. Use Value: Sub-100nA leakage preserves accuracy in µV-level sensor outputs; 1.65V minimum supply extends battery life in multi-sensor sleep/wake cycles. |
| Portable Test Equipment | Low-Voltage Data Acquisition |
Use Scenario: Signal path configuration in handheld multimeters and oscilloscope probes. IC Role / Device Role / Timing Role: Precision SPST switch isolating calibration references or scaling resistors in auto-ranging front ends. Use Value: 0.005Ω RON matching ensures consistent gain error across ranges; >8kV HBM rating withstands field ESD events during probe handling. |
Use Scenario: Channel selection in battery-powered data loggers interfacing thermocouples and RTDs. IC Role / Device Role / Timing Role: Low-charge-injection (−125pC) switch minimizing transient errors during sample-and-hold acquisition. Use Value: −125pC charge injection reduces settling time and quantization error in 16-bit+ ADC systems operating from single-cell Li-ion supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617EUA+ | Higher RON (0.5Ω at 3V), slower tON/tOFF (35ns), no 1.8V logic compatibility | Acceptable where ultra-low RON and speed are non-critical; requires 3.3V logic interface | Choose MAX4617EUA+ only if board already uses 3.3V GPIO and RON < 0.2Ω is not required. |
| TMUX1574RSVR | Lower RON (0.12Ω), higher supply range (1.08–3.6V), but larger 10-pin UQFN package | Supports lower-voltage operation (1.08V) and offers better RON flatness, yet occupies more PCB area | Select TMUX1574RSVR when supply can drop below 1.65V or when tighter RON flatness (0.003Ω) is mandatory - accept larger footprint. |
Compared with MAX4617EUA+ and TMUX1574RSVR, ISL43L120IU uniquely balances ultra-low RON (0.16Ω), 13ns speed, 1.8V logic compatibility, and compact MSOP-8 size - making it optimal for space-constrained, battery-powered systems where signal fidelity and power efficiency are co-prioritized.
Availability
ISL43L120IU is available at Aetrix Electronics and suitable for mobile audio routing, sensor multiplexing, portable test equipment, and low-voltage data acquisition requiring stable component supply across industrial and consumer production cycles.
Supply support for ISL43L120IU 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) is a U.S.-based semiconductor designer specializing in precision analog, power management, and interface ICs for high-reliability applications.
The ISL43L120IU belongs to Intersil's ultra-low-RON analog switch family, engineered specifically for battery-powered portable electronics demanding minimal power, maximal signal fidelity, and robust ESD performance in miniature packages.
FAQ
What is the maximum analog signal voltage range supported by the ISL43L120IU?
The ISL43L120IU supports a full-rail analog signal range from 0V to V+, where V+ is the applied supply voltage within +1.65V to +3.6V. At 3V supply, signals from 0V to 3V pass bidirectionally with minimal distortion - confirmed by RON flatness of 0.008Ω and guaranteed in the Electrical Specifications table under "Analog Signal Range, VANALOG".
Does the ISL43L120IU support true 1.8V logic-level inputs?
Yes - the ISL43L120IU is explicitly 1.8V CMOS logic compatible, with input thresholds specified as VINL ≤ 0.5V and VINH ≥ 1.4V when operating from a 3V supply, and VINL ≤ 0.4V / VINH ≥ 1.0V at 1.8V supply. This allows direct interfacing with 1.8V ASIC GPIOs without level-shifting circuitry.
Can the ISL43L120IU be used in a bipolar supply configuration?
No - the ISL43L120IU is designed exclusively for single-supply operation from +1.65V to +3.6V referenced to GND. Its internal level shifter and logic threshold architecture assume a grounded reference; applying negative voltage to GND or reverse-polarizing V+ will damage the device or cause undefined switching behavior.
What is the thermal resistance (θJA) of the ISL43L120IU in its MSOP-8 package?
The ISL43L120IU in the 8-lead MSOP package (M8.118) has a typical junction-to-ambient thermal resistance (θJA) of 190°C/W, as specified in the Thermal Information section of the datasheet. This value assumes mounting on a low-thermal-conductivity test board in free air - actual performance improves with copper pour and thermal vias.
How does the ISL43L120IU handle ESD protection on analog pins?
The ISL43L120IU integrates ESD protection diodes from each analog pin (NO1, NO2, COM1, COM2) to both V+ and GND, rated for >8kV per MIL-STD-883 Method 3015. These diodes clamp transient voltages but require proper supply sequencing: V+ must be applied before analog or digital signals to prevent forward conduction and potential latch-up.
ISL43L120IU 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:
- 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
ISL43L120IU FAQ
1.How can I place an order for ISL43L120IU through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL43L120IU 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 ISL43L120IU reliable?
The price and inventory of ISL43L120IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL43L120IU is usually 5 days.
3.What payment methods are accepted for ISL43L120IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL43L120IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL43L120IU?
ISL43L120IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL43L120IU 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 ISL43L120IU?
For technical support, including ISL43L120IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL43L120IU requirements.
6.How does Aetrix verify that ISL43L120IU is sourced from the original manufacturer or authorized distributors?
All ISL43L120IU 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 ISL43L120IU meets industry standards.
7.What is the process for return or replacement of ISL43L120IU?
All ISL43L120IU units undergo pre-shipment inspection (PSI). If there is an issue with ISL43L120IU, 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 ISL43L120IU part is unused and in its original packaging.
Return procedure for ISL43L120IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL43L120IU Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
