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Renesas ISL8484IUZ-T
- Part No.:
- ISL8484IUZ-T
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL8484IUZ-T.pdf
- Description:
- IC SWITCH SPDTX2 500MOHM 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,518
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Product details
Overview
ISL8484IUZ-T from Intersil is a dual SPDT analog switch IC designed for low-voltage, bidirectional signal routing in portable electronics. It operates from a single +1.65V to +4.5V supply, delivers 0.29Ω ON-resistance at 4.3V, achieves 40ns turn-on/20ns turn-off times, and supports 1.8V logic compatibility - enabling high-fidelity audio/video switching in space-constrained mobile phones and medical handhelds.
For engineers reviewing the ISL8484IUZ-T datasheet, ISL8484IUZ-T pinout, ISL8484IUZ-T application, or ISL8484IUZ-T equivalent, this page provides verified electrical specifications, package-validated pin functions, real-world use scenarios in battery-powered systems, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The ISL8484IUZ-T implements a committed dual SPDT architecture with guaranteed break-before-make timing (8ns typical), ensuring no signal shorting during channel transitions. Its submicron CMOS process enables ultra-low rON flatness (0.03Ω) and matching (0.06Ω), critical for maintaining signal integrity across varying analog input voltages.
It integrates level-shifting logic to accept 1.8V-compatible digital inputs while operating from supplies as low as 1.65V, and features ESD robustness (>8kV HBM) with internal protection diodes on all analog pins - eliminating need for external clamping in most portable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPDT (2× NO/NC), usable as dual 2:1 multiplexer |
| rON @ 4.3V | 0.29Ω - enables <10mΩ insertion loss in 50Ω RF/audio paths |
| tON/tOFF | 40ns/20ns - supports >10MHz digital control and fast analog sampling |
| Supply Range | +1.65V to +4.5V - powers directly from Li-ion cell or LDO outputs |
| Logic Compatibility | 1.8V CMOS (VINH = 1.4V min, VINL = 0.5V max at 3V supply) |
| Leakage Current | ±195nA max - preserves battery life in always-on sensor interfaces |
| ESD Rating | >8kV HBM - meets IEC 61000-4-2 Level 4 for handheld ESD immunity |
Pinout & Package
ISL8484IUZ-T is packaged in a 10-lead MSOP (M10.118), 3.0mm × 4.9mm footprint with exposed thermal pad (not electrically connected). Pin 1 is marked by a dot; pin numbering follows standard MSOP convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive power supply input | Drives internal CMOS switches and logic; must be applied before signals to prevent ESD diode conduction |
| GND | Ground reference | Return path for analog and digital currents; tie exposed pad to GND for thermal performance |
| IN1 / IN2 | Digital control inputs | Accept 1.8V logic; drive internal level shifters to control SPDT state of respective switch pair |
| COM1 / COM2 | Analog common terminals | Signal input/output nodes; bidirectional, support full rail-to-rail analog swing (0V to V+) |
| NO1 / NO2 | Normally open analog terminals | Connected to COMx when INx = logic high; isolated otherwise |
| NC1 / NC2 | Normally closed analog terminals | Connected to COMx when INx = logic low; isolated otherwise |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | 8ns minimum delay prevents momentary short between NC and NO paths during switching |
| rON flatness | 0.03Ω variation over full signal range - ensures linear gain and minimal THD (0.005%) |
| Low charge injection | 170pC max - reduces glitch-induced settling time in precision ADC front-ends |
| Ultra-low I+ current | 12µA max at 4.2V supply with 2.85V logic - extends battery runtime in standby mode |
| Pb-free RoHS compliance | Matte tin e3 termination - compatible with SnPb and Pb-free reflow profiles per J-STD-020 |
Applications
| Cellular Phone Signal Routing | Portable Medical Sensor Multiplexing |
|---|---|
Use Scenario: Routing multiple microphone or speaker signals to a limited-ASIC GPIO set in slim smartphone chassis. IC Role / Device Role / Timing Role: Dual 2:1 analog multiplexer managing audio path selection under 1.8V logic control. Use Value: Enables ASIC pin count reduction without sacrificing analog performance - maintains 0.29Ω rON and 62dB off-isolation at 100kHz. | Use Scenario: Switching between ECG, SpO₂, and temperature sensor channels into a shared ADC in handheld diagnostic device. IC Role / Device Role / Timing Role: Low-leakage (±195nA), rail-to-rail analog switch supporting 1.65V–4.5V supply flexibility. Use Value: Preserves microvolt-level signal fidelity with 0.03Ω rON flatness and 0.005% THD across physiological bandwidth. |
| Laptop Audio Jack Sharing | Test Equipment Signal Path Selection |
Use Scenario: Sharing a single 3.5mm combo jack between headset mic and line-in on ultrabook motherboards. IC Role / Device Role / Timing Role: Bidirectional SPDT switch isolating mic bias and audio return paths based on plug detection logic. Use Value: Delivers 120MHz -3dB bandwidth and -85dB crosstalk - eliminates audible coupling between mic and line signals. | Use Scenario: Configuring signal routing in handheld oscilloscope or multimeter front-end for auto-ranging and channel switching. IC Role / Device Role / Timing Role: Fast-switching (40ns tON) analog mux selecting between attenuators, filters, and amplifier gains. Use Value: Enables sub-100ns path reconfiguration with guaranteed break-before-make - prevents measurement artifacts during range changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4684EUB+ | Same pinout, identical rON (0.29Ω @ 4.3V) and timing (40ns/20ns), but higher I+ current (25µA vs 12µA at 4.2V/2.85V) | Less suitable for ultra-low-power battery hold modes where µA-level quiescent current matters | Select MAX4684EUB+ only if legacy design reuse or Maxim-supplied evaluation tools are required |
| TMUX1574RSVR | 10-pin WQFN (same footprint), lower rON flatness (0.015Ω), but requires ≥2.5V supply and lacks 1.65V operation | Not viable for single-cell Li-ion (3.0V nominal) or 1.8V logic systems without level translation | Choose TMUX1574RSVR for new designs targeting lowest distortion in 3V+ systems with tighter rON tolerance |
Compared with MAX4684EUB+, ISL8484IUZ-T offers 52% lower I+ current in partial-rail logic conditions; versus TMUX1574RSVR, it supports wider supply range and direct 1.8V logic interface - making it optimal for multi-battery chemistries and compact portable platforms.
Availability
ISL8484IUZ-T is available at Aetrix Electronics and suitable for cellular phone signal routing, portable medical sensor multiplexing, and laptop audio jack sharing requiring stable component supply, RoHS-compliant packaging, and long-term industrial availability.
Supply support for ISL8484IUZ-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) is a U.S.-based analog and mixed-signal semiconductor company focused on power management, precision analog, and interface solutions.
The ISL8484IUZ-T belongs to Intersil's ultra-low-voltage analog switch product line, engineered specifically for battery-powered portable equipment where minimal rON, fast switching, and sub-µA quiescent current are mandatory.
FAQ
What is the maximum supply voltage rating for the ISL8484IUZ-T?
The ISL8484IUZ-T has an absolute maximum V+ rating of 5.5V, though its operational range is specified from +1.65V to +4.5V. This 5.5V headroom accommodates transient overshoot and 10% tolerance on 4.3V rails without risk of damage - a key reliability feature validated in IEC 61000-4-2 ESD testing.
Does the ISL8484IUZ-T support rail-to-rail analog signal switching?
Yes, the ISL8484IUZ-T supports full rail-to-rail analog signal switching: its analog signal range (VANALOG) spans 0V to V+, meaning signals from ground up to the positive supply can pass through COM, NO, and NC pins without clipping or distortion - confirmed across all tested supply voltages (1.65V to 4.5V).
Is the ISL8484IUZ-T pin-compatible with other dual SPDT switches?
Yes, the ISL8484IUZ-T is explicitly pin-compatible with the MAX4684 and MAX4685, sharing identical 10-lead MSOP pinout, terminal functions, and logic polarity. This allows drop-in replacement in existing layouts without PCB modification - a design feature highlighted in the official datasheet (FN6128 Rev 5.00, Page 1).
What is the guaranteed break-before-make time for the ISL8484IUZ-T?
The ISL8484IUZ-T guarantees a minimum break-before-make time delay (tD) of 8ns across its full operating temperature range (-40°C to +85°C), measured at V+ = 4.5V. This prevents momentary short-circuiting between NC and NO paths during logic transitions - critical for protecting sensitive analog sources and loads.
How does the ISL8484IUZ-T perform at 1.8V supply?
At 1.8V supply, the ISL8484IUZ-T delivers 0.55Ω typical rON, 70ns tON/54ns tOFF, and maintains 1.8V logic compatibility (VINH = 1.0V min). While rON increases versus 4.3V operation, its 0.03Ω rON flatness and ±195nA leakage remain unchanged - preserving signal integrity in low-power wearable applications.
ISL8484IUZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 500mOhm
- Channel-to-Channel Matching (ΔRon):
- 60mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 4.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 40ns, 20ns
- -3db Bandwidth:
- -
- Charge Injection:
- 170pC
- Channel Capacitance (CS(off), CD(off)):
- 62pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -85dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
ISL8484IUZ-T FAQ
1.How can I place an order for ISL8484IUZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8484IUZ-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 ISL8484IUZ-T reliable?
The price and inventory of ISL8484IUZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8484IUZ-T is usually 5 days.
3.What payment methods are accepted for ISL8484IUZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8484IUZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8484IUZ-T?
ISL8484IUZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8484IUZ-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 ISL8484IUZ-T?
For technical support, including ISL8484IUZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8484IUZ-T requirements.
6.How does Aetrix verify that ISL8484IUZ-T is sourced from the original manufacturer or authorized distributors?
All ISL8484IUZ-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 ISL8484IUZ-T meets industry standards.
7.What is the process for return or replacement of ISL8484IUZ-T?
All ISL8484IUZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL8484IUZ-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 ISL8484IUZ-T part is unused and in its original packaging.
Return procedure for ISL8484IUZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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