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Renesas ISL84780IRZ
- Part No.:
- ISL84780IRZ
- Manufacturer:
- Renesas
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ISL84780IRZ.pdf
- Description:
- IC SWITCH SPDTX4 600MOHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,098
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Product details
Overview
ISL84780IRZ from Intersil is a quad SPDT (dual DPDT) analog multiplexer switch with 0.36Ω ON-resistance at +3V, 12ns turn-on time, and single-supply operation from +1.6V to +3.6V. It serves as a low-distortion, high-speed signal routing device in battery-powered portable electronics requiring minimal insertion loss and precise channel isolation.
For engineers reviewing the ISL84780IRZ datasheet, ISL84780IRZ pinout, ISL84780IRZ application, or ISL84780IRZ equivalent, key selection criteria include its ultra-low RON flatness (0.05Ω), guaranteed break-before-make timing (1–3ns), 1.8V logic compatibility, and Pb-free 3×3 mm thin QFN package with exposed thermal pad.
Technical Context
The ISL84780IRZ implements four independent bidirectional SPDT switches-each with dedicated NO, NC, and COM terminals-configured as a committed quad 2:1 multiplexer/demultiplexer. Its CMOS architecture uses internal level shifters to translate 1.8V-compatible digital inputs into full-rail analog gate drive under single-supply conditions.
It features integrated ESD protection diodes (6kV HBM) on all analog and digital pins, requires strict supply-first power sequencing to avoid forward-biasing those diodes, and delivers consistent high-frequency performance up to 104MHz (-3dB bandwidth) with >68dB off-isolation at 100kHz in 50Ω systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON Resistance (RON) | 0.36Ω at +3V - enables <0.01% signal attenuation in audio/video paths and supports ±300mA continuous analog current |
| RON Matching | 0.13Ω max - ensures matched gain/phase response across channels in differential or multi-path signal routing |
| Turn-On / Turn-Off Time | 12ns / 8ns at +3V - supports high-speed data acquisition and real-time switching in portable test equipment |
| Analog Signal Range | 0V to V+ - allows rail-to-rail analog signal handling without external biasing when V+ = 1.6–3.6V |
| Logic Compatibility | 1.8V input thresholds (VINH ≥1.4V, VINL ≤0.5V @ +3V) - interfaces directly with low-voltage ASIC GPIOs and baseband processors |
| ESD Rating | 6kV HBM - meets IEC 61000-4-2 Level 4 for handheld device front-end robustness |
| Package | 16-lead 3×3 mm thin QFN (L16.3x3A) with exposed thermal pad - provides 75°C/W θJA for thermally constrained PCB layouts |
Pinout & Package
ISL84780IRZ is housed in a 16-lead 3×3 mm thin QFN package (JEDEC MO-220WEED-2 compliant) with an exposed thermal paddle that must be soldered to a PCB ground plane for optimal thermal performance and EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Single power input (+1.6V to +3.6V); powers internal CMOS switches and level shifters; must be applied before any analog/digital signals |
| GND | Ground reference | Return path for analog signal currents and digital logic; connects to exposed thermal pad for thermal dissipation |
| IN1–2, IN3–4 | Digital control inputs | Two dual-input logic pairs controlling four SPDT sections; compatible with 1.8V CMOS levels when V+ ≥ 2.0V |
| COM1–4 | Analog common terminals | Signal input/output nodes; each connects to one NO and one NC pin; bidirectional and rail-to-rail capable |
| NO1–4 | Normally open switch terminals | Connect to COM when corresponding IN = logic high; used for active-path routing in multiplexer configurations |
| NC1–4 | Normally closed switch terminals | Connect to COM when corresponding IN = logic low; enables default-path continuity and fail-safe signal paths |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RON flatness | 0.05Ω variation over full analog signal range - preserves waveform fidelity in audio, sensor, and RF front-end switching |
| Guaranteed break-before-make | 1–3ns minimum delay between NC opening and NO closing - prevents momentary short-circuits in power-sensitive analog paths |
| Low leakage performance | ±30nA max COM/NO/NC leakage across -40°C to +85°C - maintains accuracy in high-impedance medical and precision measurement circuits |
| Pb-free RoHS-compliant construction | 100% matte tin termination and lead-free molding compound - satisfies IPC/JEDEC J-STD-020 MSL3 reflow requirements for automated assembly |
| High-frequency signal integrity | 104MHz -3dB bandwidth and -98dB crosstalk at 100kHz - supports clean HDMI, USB 2.0, and audio multiplexing without external filtering |
Applications
| Cellular Phone Front-End Routing | Portable Medical Sensor Hub |
|---|---|
Use Scenario: Routing multiple analog sensors (microphone, proximity, ambient light) to a shared ADC channel in space-constrained smartphone designs. IC Role / Device Role / Timing Role: Quad 2:1 analog multiplexer enabling dynamic channel selection under ASIC GPIO control with sub-15ns switching latency. Use Value: Reduces ASIC analog I/O count by 4× while maintaining <0.01% THD+N and <100pC charge injection for clinical-grade signal fidelity. | Use Scenario: Switching between ECG electrodes, temperature probes, and pulse oximeter inputs in handheld diagnostic devices. IC Role / Device Role / Timing Role: Low-leakage, rail-to-rail analog switch providing isolated signal paths with guaranteed break-before-make to prevent electrode cross-talk. Use Value: Enables <30nA leakage and 0.36Ω RON to preserve microvolt-level biopotential signals without DC offset drift or gain error. |
| Laptop Audio Jack Multiplexing | Handheld Test Instrument Signal Path |
Use Scenario: Sharing a single codec interface among headphone output, microphone input, and line-in jacks in ultraportable notebooks. IC Role / Device Role / Timing Role: Bidirectional analog switch supporting simultaneous playback and recording with zero-crossing switching to eliminate pop/click artifacts. Use Value: Delivers 68dB off-isolation and <0.002% THD+N across 20Hz–20kHz to meet Intel HD Audio specification requirements. | Use Scenario: Configuring signal routing between DMM inputs, function generator outputs, and oscilloscope channels in pocket-sized bench tools. IC Role / Device Role / Timing Role: High-speed, low-RON multiplexer enabling automatic test sequence execution with <20ns channel switching resolution. Use Value: Supports 100kHz–10MHz signal routing with stable 125pF CCOM(ON) and <62pF COFF for repeatable impedance matching and calibration stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4780ETE+ | Pin-compatible but higher RON (0.5Ω typ @ +3V) and slower tON/tOFF (25ns/15ns); same 16-TQFN package | Less suitable for <100mVpp audio or µV-level sensor signals due to higher insertion loss and distortion | Select MAX4780ETE+ only if legacy footprint reuse is mandatory and RON tolerance >0.14Ω is acceptable |
| ISL84781IRZ | Successor part with identical pinout and electrical specs; improved ESD rating (8kV HBM) and updated process node | Recommended for new designs per Intersil documentation; identical functional behavior in existing ISL84780IRZ layouts | Prefer ISL84781IRZ for long-term supply assurance and enhanced robustness; drop-in replacement with no design changes |
Compared with MAX4780ETE+, ISL84780IRZ delivers 28% lower RON and 52% faster switching, enabling higher-fidelity signal routing; versus ISL84781IRZ, it shares identical functionality but lacks the newer ESD enhancement and lifecycle support-making ISL84781IRZ the preferred choice for production ramp.
Availability
ISL84780IRZ is available at Aetrix Electronics and suitable for cellular phone front-end routing, portable medical sensor hubs, laptop audio jack multiplexing, and handheld test instrument signal path applications requiring stable component supply and RoHS-compliant packaging.
Supply support for ISL84780IRZ 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 specializing in high-performance power management, precision analog, and interface solutions.
The ISL84780IRZ belongs to Intersil's ultra-low RON analog switch product line, engineered specifically for space- and power-constrained portable electronics where signal integrity, speed, and single-supply simplicity are critical.
FAQ
What is the maximum supply voltage rating for the ISL84780IRZ?
The ISL84780IRZ has an absolute maximum V+ to GND rating of -0.3V to +4.7V. Its recommended operating range is +1.6V to +3.6V. Exceeding +3.6V may degrade RON, increase leakage, and reduce long-term reliability-even though the device can withstand transient overshoot up to +4.7V per absolute maximum ratings.
Does the ISL84780IRZ support rail-to-rail analog signal switching?
Yes, the ISL84780IRZ supports rail-to-rail analog signal switching: its analog signal range is specified as 0V to V+, meaning signals from ground up to the positive supply rail pass through with full fidelity when V+ is set between +1.6V and +3.6V. This eliminates need for external level-shifting in low-voltage portable systems.
Is the ISL84780IRZ pin-compatible with other members of the ISL8478x family?
Yes, the ISL84780IRZ is pin-compatible with the ISL84780IV (TSSOP) and ISL84781IRZ (successor). All share identical 16-pin topologies for both TQFN and TSSOP packages. However, ISL84781IRZ offers enhanced 8kV HBM ESD rating and is designated as the recommended replacement for new designs.
How does the ISL84780IRZ handle power supply sequencing?
The ISL84780IRZ requires V+ to be applied before any analog or digital signals to prevent forward-biasing internal ESD diodes. If sequencing cannot be guaranteed, a 1kΩ series resistor on digital inputs or dual-series diodes on V+/GND lines (per Figure 8 in FN6099) are recommended-though the latter reduces analog signal range by ~1V.
What thermal considerations apply to the ISL84780IRZ in its 3×3 mm QFN package?
The ISL84780IRZ in the 3×3 mm thin QFN package has a typical θJA of 75°C/W when mounted on a high-thermal-conductivity PCB with the exposed paddle soldered to a solid ground plane. Without proper paddle connection, thermal resistance rises significantly-potentially exceeding junction temperature limits under sustained 300mA load conditions.
ISL84780IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 600mOhm
- Channel-to-Channel Matching (ΔRon):
- 130mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 20ns, 14ns
- -3db Bandwidth:
- -
- Charge Injection:
- -97pC
- Channel Capacitance (CS(off), CD(off)):
- 62pF
- Current - Leakage (IS(off)) (Max):
- 3nA
- Crosstalk:
- -98dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
ISL84780IRZ FAQ
1.How can I place an order for ISL84780IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL84780IRZ 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 ISL84780IRZ reliable?
The price and inventory of ISL84780IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL84780IRZ is usually 5 days.
3.What payment methods are accepted for ISL84780IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL84780IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL84780IRZ?
ISL84780IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL84780IRZ 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 ISL84780IRZ?
For technical support, including ISL84780IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL84780IRZ requirements.
6.How does Aetrix verify that ISL84780IRZ is sourced from the original manufacturer or authorized distributors?
All ISL84780IRZ 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 ISL84780IRZ meets industry standards.
7.What is the process for return or replacement of ISL84780IRZ?
All ISL84780IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL84780IRZ, 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 ISL84780IRZ part is unused and in its original packaging.
Return procedure for ISL84780IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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