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Renesas ISL84781IVZ-T
- Part No.:
- ISL84781IVZ-T
- Manufacturer:
- Renesas
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL84781IVZ-T.pdf
- Description:
- IC MUX 8:1 750MOHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,790
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Product details
Overview
ISL84781IVZ-T from Renesas Electronics is an ultra-low ON-resistance, single-supply 8-to-1 analog multiplexer designed for precision signal routing in battery-powered systems. It operates from +1.6V to +3.6V, delivers 0.4 Ω rON at +3.0V, supports rail-to-rail analog signals, and features guaranteed break-before-make switching - enabling high-fidelity audio routing and sensor channel selection in portable medical devices.
For engineers reviewing the ISL84781IVZ-T datasheet, ISL84781IVZ-T pinout, ISL84781IVZ-T application, or ISL84781IVZ-T equivalent, this page provides verified technical context, package-specific pin mapping, real-world use-value analysis, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The ISL84781IVZ-T implements a CMOS-based 8:1 analog multiplexer architecture with integrated level-shifting logic to support 1.8V-compatible digital control (VINH, ADD0–ADD2) across its full 1.6V–3.6V supply range. Its internal switch array uses matched transistor pairs to achieve 0.12 Ω rON matching and 0.056 Ω rON flatness, ensuring minimal gain error and THD of 0.014% in audio paths.
It incorporates ESD protection diodes on all analog pins (NO0–NO7, COM), with absolute max ratings of −0.3V to (V+ + 0.3V); overvoltage tolerance requires external series resistors on logic inputs or dual-series diodes on V+ for signal-path protection. The device guarantees break-before-make timing of 4 ns (typ) at +3.3V to prevent momentary shorting during channel transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | 8:1 analog multiplexer with single-pole, single-throw (SPST) switches per channel |
| rON @ +3.0V | 0.4 Ω typical - enables <10 mΩ channel-to-channel gain mismatch in 50 Ω systems |
| rON Matching | 0.12 Ω max - ensures consistent signal attenuation across selected channels |
| tON/tOFF | 16 ns/13 ns @ +3V - supports >20 MHz switching in time-critical data acquisition |
| Supply Range | +1.6V to +3.6V - powers directly from Li-ion cell or LDO output without level translation |
| Leakage Current | 4 nA max @ +25°C - preserves accuracy in high-impedance sensor front-ends (e.g., pH electrodes) |
| Off-Isolation | 65 dB @ 100 kHz - suppresses crosstalk between inactive channels in multi-signal routing |
Pinout & Package
The ISL84781IVZ-T is packaged in a 16-lead TSSOP (M16.173) with exposed pad not internally connected. Pin 1 is marked by a dot; pin numbering follows standard counter-clockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply input | Supplies both analog switch core and level-shifted logic; must be applied before any analog/digital signals |
| GND | Ground reference | Common return for analog signals, digital logic, and ESD protection diodes |
| COM | Analog common output | Single output node shared across all 8 switched inputs; carries full 300 mA continuous current |
| NO0–NO7 | Analog input channels | Eight bidirectional analog terminals; each handles rail-to-rail signals up to V+ and GND |
| ADD0–ADD2 | Binary address inputs | Selects active NOx channel (0–7); logic thresholds are 0.5V/1.4V @ +3V supply |
| INH | Inhibit control | Active-high enable: logic high opens all switches; logic low enables normal multiplexing operation |
| N.C. | No-connect terminal | Not bonded or routed internally; must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low rON | 0.4 Ω @ +3V enables <0.1% insertion loss in 50 Ω RF/audio paths |
| Break-before-make guarantee | 4 ns min tBBM prevents signal shorting during channel switching in sensor arrays |
| Rail-to-rail analog range | Supports full V+ to GND signal swing - critical for direct connection to ADCs/DACs |
| 1.8V logic compatibility | Accepts 1.4V VIH and 0.5V VIL at +3V supply - interfaces directly with modern low-voltage MCUs |
| Low leakage & power | 4 nA off-leakage and <0.2 µW quiescent power extend battery life in always-on monitoring systems |
Applications
| Portable Audio Routing | Multi-Sensor Data Acquisition |
|---|---|
Use Scenario: Switching microphone inputs, headphone outputs, or line-level signals in Bluetooth earbuds and voice-controlled wearables. IC Role / Device Role / Timing Role: Analog multiplexer providing low-distortion, low-noise signal path selection under MCU control via ADD0–ADD2 and INH. Use Value: 0.014% THD and 65 dB off-isolation preserve audio fidelity; 0.4 Ω rON minimizes insertion loss without external buffering. | Use Scenario: Scanning temperature, pressure, and humidity sensors in handheld environmental monitors or point-of-care diagnostic tools. IC Role / Device Role / Timing Role: Channel selector routing sensor outputs to a shared ADC input while maintaining signal integrity across varying source impedances. Use Value: 0.12 Ω rON matching and 4 nA leakage ensure <0.05% measurement error drift across 8 channels at room temperature. |
| Battery-Powered Medical Devices | Low-Voltage Test Equipment |
Use Scenario: Signal routing in portable ECG or pulse oximetry units where supply voltage drops below 2.0V during battery discharge. IC Role / Device Role / Timing Role: Multiplexer operating down to +1.6V supply while maintaining rail-to-rail analog range and sub-1 Ω rON. Use Value: Functional at 1.6V eliminates need for boost converters; 0.55 Ω rON @ +1.8V keeps signal path resistance stable across battery life. | Use Scenario: Automated test fixtures that route calibration references or DUT signals to measurement instruments using microcontroller sequencing. IC Role / Device Role / Timing Role: High-speed analog switch enabling <25 ns channel switching for rapid multi-point testing sequences. Use Value: 16 ns tON reduces test cycle time; guaranteed break-before-make prevents transient shorts during reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4781ESE+ | Pin-compatible but higher rON (0.6 Ω @ +3V) and slower tON (25 ns); no 1.8V logic compatibility guarantee | Less suitable for ultra-low-power or high-THD-sensitive audio; acceptable for general-purpose industrial muxing | Choose MAX4781ESE+ only if legacy board reuse is required and 0.2 Ω rON penalty is acceptable |
| TMUX1308PWR | Lower supply range (1.08V–3.6V), higher rON (0.9 Ω @ +3V), no guaranteed break-before-make | Better for sub-1.6V battery operation but unsuitable where channel shorting must be avoided (e.g., mixed-voltage sensor banks) | Select TMUX1308PWR when operating below 1.6V is mandatory and BMB timing is non-critical |
Compared with MAX4781ESE+ and TMUX1308PWR, the ISL84781IVZ-T uniquely combines sub-0.5 Ω rON, guaranteed break-before-make, and 1.8V logic compatibility - making it optimal for precision, low-power, and safety-critical analog routing where signal integrity and timing determinism are essential.
Availability
ISL84781IVZ-T is available at Aetrix Electronics and suitable for portable medical instrumentation, battery-powered audio interfaces, and multi-sensor data loggers requiring stable component supply across extended production lifecycles.
Supply support for ISL84781IVZ-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
Renesas Electronics is a global semiconductor leader delivering high-performance, reliable solutions for automotive, industrial, infrastructure, and IoT applications.
The ISL84781IVZ-T belongs to Renesas' precision analog switch family, engineered specifically for ultra-low-resistance, low-voltage signal routing in space-constrained, battery-operated equipment where power efficiency and signal fidelity are critical.
FAQ
What is the maximum continuous current rating for the ISL84781IVZ-T?
The ISL84781IVZ-T supports ±300 mA continuous current through either the COM or any NOx terminal. This rating applies across the full operating temperature range (−40°C to +85°C) and supply voltage range (+1.6V to +3.6V). Peak pulsed current is ±500 mA at 10% duty cycle, making the ISL84781IVZ-T suitable for driving moderate-load audio paths or sensor excitation circuits without external buffering.
Does the ISL84781IVZ-T require external level shifters when interfaced with a 1.8V microcontroller?
No, the ISL84781IVZ-T does not require external level shifters when used with a 1.8V microcontroller. Its digital inputs (INH, ADD0–ADD2) are 1.8V CMOS-compatible with guaranteed VIH ≥1.4V and VIL ≤0.5V when operated from a +3.0V supply - meeting standard 1.8V logic thresholds. At lower supplies (e.g., +1.8V), VIH is specified ≥1.0V and VIL ≤0.4V, remaining compatible with most 1.8V I/O drivers.
What is the significance of the N.C. pin on the ISL84781IVZ-T TSSOP package?
The N.C. (No Connect) pin on the ISL84781IVZ-T TSSOP package is not internally bonded or electrically connected. It must remain unconnected on the PCB layout - neither tied to V+, GND, nor left floating with pull-up/down. This pin exists solely for mechanical symmetry and package compatibility; routing traces or placing vias to it may cause unintended coupling or assembly issues.
How does the ISL84781IVZ-T handle overvoltage conditions on analog inputs?
The ISL84781IVZ-T includes ESD protection diodes from each analog pin (NO0–NO7, COM) to V+ and GND. If an analog signal exceeds V+ or falls below GND, one diode conducts - limiting excursion to ~0.7V beyond rails. To prevent damage, V+ must be applied before analog signals, and input voltages must stay within −0.3V to (V+ + 0.3V). For unprotected signal sources, external series diodes on V+ or current-limiting resistors on logic lines are recommended per Renesas Application Note AN557.
Is the ISL84781IVZ-T RoHS compliant and lead-free?
Yes, the ISL84781IVZ-T is Pb-free and RoHS compliant. It uses 100% matte tin plate termination finish and RoHS-compliant molding compounds and die attach materials. The part meets IPC/JEDEC J-STD-020C moisture sensitivity level requirements and is rated MSL3 for the TSSOP package. Full compliance documentation, including material declarations and test reports, is available through Renesas' official product page and Aetrix Electronics' quality portal.
ISL84781IVZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 750mOhm
- Channel-to-Channel Matching (ΔRon):
- 120mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 25ns, 23ns
- -3db Bandwidth:
- -
- Charge Injection:
- -39pC
- Channel Capacitance (CS(off), CD(off)):
- 65pF, 470pF
- Current - Leakage (IS(off)) (Max):
- 4nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
ISL84781IVZ-T FAQ
1.How can I place an order for ISL84781IVZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL84781IVZ-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 ISL84781IVZ-T reliable?
The price and inventory of ISL84781IVZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL84781IVZ-T is usually 5 days.
3.What payment methods are accepted for ISL84781IVZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL84781IVZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL84781IVZ-T?
ISL84781IVZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL84781IVZ-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 ISL84781IVZ-T?
For technical support, including ISL84781IVZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL84781IVZ-T requirements.
6.How does Aetrix verify that ISL84781IVZ-T is sourced from the original manufacturer or authorized distributors?
All ISL84781IVZ-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 ISL84781IVZ-T meets industry standards.
7.What is the process for return or replacement of ISL84781IVZ-T?
All ISL84781IVZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL84781IVZ-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 ISL84781IVZ-T part is unused and in its original packaging.
Return procedure for ISL84781IVZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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