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Renesas ISL84051IAZ
- Part No.:
- ISL84051IAZ
- Manufacturer:
- Renesas
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ISL84051IAZ.pdf
- Description:
- IC MUX 8:1 100OHM 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,636
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Product details
Overview
ISL84051IAZ from Intersil is a precision 8-channel analog multiplexer/demultiplexer configured as an 8-to-1 MUX, operating from single +2V to +12V or dual ±2V to ±6V supplies. It features 60Ω ON-resistance at ±5V, 5nA max off-leakage at +85°C, rail-to-rail signal handling, and break-before-make switching-used in medical ultrasound front-ends and portable ADC/DAC signal routing.
For engineers reviewing the ISL84051IAZ datasheet, ISL84051IAZ pinout, ISL84051IAZ application, or ISL84051IAZ equivalent, key selection criteria include guaranteed rON matching (<6Ω), low 2pC charge injection, TTL/CMOS-compatible logic thresholds (0.8V/2.4V), and QSOP-16 package compatibility with legacy 74HC4051 designs.
Technical Context
The ISL84051IAZ implements a CMOS-based 8:1 analog switch architecture with three address inputs (ADDA–ADDC) and a global inhibit (INH) pin that simultaneously opens all channels. Its internal level shifters translate TTL/CMOS logic inputs into full-rail analog gate drive signals across bipolar or single-supply configurations.
It supports rail-to-rail analog signal ranges up to V+ and down to V−, with ESD diodes clamping input voltages beyond supply rails. Break-before-make timing is guaranteed at ≤10ns (±5V) and ≤30ns (+5V), preventing momentary shorting during channel transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | 8:1 analog multiplexer/demultiplexer with single common (COM) and eight normally open (NO0–NO7) terminals |
| ON-resistance (rON) | 60Ω max at ±5V supply - ensures minimal signal attenuation and gain error in precision sensor or DAC interfaces |
| rON matching | <6Ω between channels - critical for matched gain paths in multi-channel instrumentation amplifiers |
| Charge injection | 2pC typical - limits voltage glitch in sample-and-hold circuits and integrator reset applications |
| Off-leakage current | 5nA max at +85°C with ±5V supply - preserves accuracy in high-impedance biomedical sensing nodes |
| Switching time (tON/tOFF) | 50ns/40ns at ±5V - enables high-speed data acquisition at >10 MSPS in ATE systems |
| Supply range | +2V to +12V single or ±2V to ±6V dual - supports battery-powered portable equipment down to 2V operation |
Pinout & Package
ISL84051IAZ is housed in a 16-lead QSOP package (Pb-free, RoHS compliant, M16.15A drawing), with 0.65mm lead pitch and exposed pad not present. Thermal resistance θJA = 95°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive power supply input | Drives analog switch gates and internal logic; sets upper analog signal limit |
| V− | Negative power supply input | Drives analog switch gates; connects to GND for single-supply operation |
| GND | Ground reference | Reference for digital logic and level shifters; no connection to analog signal path |
| INH | Inhibit control input | Active-high logic: tie to V+ to disable all switches; tie to GND for normal operation |
| COM | Common analog terminal | Single bidirectional I/O node shared across all 8 channels |
| NO0–NO7 | Normally open analog terminals | Eight independent input/output nodes selected via ADDA–ADDC address lines |
| ADDA–ADDC | Binary address inputs | 3-bit code selects one of eight NOx paths to connect to COM (truth table on p.4) |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed ≤10ns (±5V) prevents signal shorting during channel changes in multiplexed sensor arrays |
| TTL/CMOS logic compatibility | 0.8V/2.4V thresholds over +2.7V to +10V V+ range - interoperable with 3.3V and 5V microcontrollers without level shifters |
| Low charge injection (2pC) | Minimizes voltage step errors in precision sample-and-hold and integrator reset circuits |
| Pin compatibility | Direct replacement for MAX4051 and 74HC4051 - enables drop-in upgrade with no PCB redesign |
| Rail-to-rail analog range | Supports full V− to V+ signal swing - preserves dynamic range in ±5V op-amp signal chains |
Applications
| Medical Ultrasound Front-End | Portable Data Acquisition System |
|---|---|
|
Use Scenario: Multiplexing 8 transducer element signals into a shared ADC channel in handheld ultrasound probes. IC Role / Device Role / Timing Role: 8:1 analog MUX routing RF echo signals while maintaining signal integrity and low noise floor. Use Value: 60Ω rON and <6Ω matching preserve amplitude fidelity across channels; 2pC charge injection avoids baseline drift in time-gain compensation circuits. |
Use Scenario: Switching between multiple sensor inputs (thermocouple, RTD, strain gauge) in battery-powered field instruments. IC Role / Device Role / Timing Role: Low-voltage analog multiplexer enabling single-supply operation down to +2V for extended battery life. Use Value: 5nA max off-leakage at +85°C ensures measurement stability in high-impedance sensor bridges; ±2V to ±6V dual-supply support accommodates bipolar signal conditioning. |
| Audio Signal Routing | Industrial PLC Analog Input Module |
|
Use Scenario: Selecting among 8 line-level audio sources for routing to a single codec in professional audio mixers. IC Role / Device Role / Timing Role: Bidirectional analog switch providing low-distortion signal path with high off-isolation (>90dB). Use Value: 90dB off-isolation at 100kHz suppresses crosstalk between adjacent audio channels; rail-to-rail operation preserves full dynamic range of ±2.5V audio signals. |
Use Scenario: Scanning 8 analog sensor inputs (4–20mA, 0–10V) into a single precision ADC in modular I/O subsystems. IC Role / Device Role / Timing Role: Industrial-grade MUX with guaranteed performance over −40°C to +85°C ambient. Use Value: Specified rON, leakage, and timing across full temperature range ensure consistent channel-to-channel accuracy in factory automation environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4051ACPE+ | Same 8:1 configuration, 16-pin DIP package; rON = 100Ω max at ±5V (vs. ISL84051IAZ's 60Ω); higher 50pC charge injection | Legacy through-hole design; less suitable for space-constrained portable devices | Choose when DIP footprint required or for backward compatibility with existing MAX4051 layouts |
| 74HC4051PW,118 | CMOS logic family; rON = 120Ω at +4.5V; no dual-supply support; only specified down to −40°C (not +85°C) | General-purpose logic-level switching; not qualified for industrial temperature range or precision analog use | Choose for cost-sensitive consumer electronics where precision and temperature range are non-critical |
Compared with MAX4051ACPE+ and 74HC4051PW,118, the ISL84051IAZ delivers lower rON, tighter matching, and guaranteed industrial temperature operation-making it optimal for medical, test, and high-accuracy embedded systems where signal integrity and reliability are mandatory.
Availability
ISL84051IAZ is available at Aetrix Electronics and suitable for medical ultrasound front-ends, portable data acquisition systems, and industrial PLC analog input modules requiring stable component supply across long production lifecycles.
Supply support for ISL84051IAZ 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 is a U.S.-based designer of high-performance analog semiconductors, specializing in power management and precision signal processing ICs for portable, medical, and industrial markets.
The ISL84051IAZ belongs to Intersil's low-voltage analog switch family, engineered for battery-powered instrumentation, medical imaging, and high-fidelity signal routing where low rON, low leakage, and robust dual-supply operation are essential.
FAQ
What supply voltage ranges does the ISL84051IAZ support?
The ISL84051IAZ operates from a single +2V to +12V supply or dual ±2V to ±6V supplies. At +5V single supply, rON is 125Ω max; at ±5V, it drops to 60Ω max. The device maintains guaranteed performance-including leakage, switching time, and logic thresholds-across the full −40°C to +85°C temperature range under these conditions. Supply sequencing must follow V+/V− application before signal inputs to avoid ESD diode conduction.
How does the INH pin function in the ISL84051IAZ?
The INH (inhibit) pin on the ISL84051IAZ is an active-high digital control input. When pulled to V+, all eight analog switches open simultaneously, disconnecting COM from NO0–NO7 regardless of address state. When tied to GND, the device operates normally, routing the selected NOx channel to COM per ADDA–ADDC inputs. This feature enables fast system-level channel blanking in ATE or safety-critical monitoring applications.
Is the ISL84051IAZ pin-compatible with the 74HC4051?
Yes, the ISL84051IAZ is pin-compatible with the industry-standard 74HC4051 in 16-lead SOIC, QSOP, and TSSOP packages. Pin assignments for V+, GND, V−, INH, COM, NO0–NO7, and ADDA–ADDC match exactly. However, the ISL84051IAZ adds dual-supply capability, lower rON, tighter matching, and guaranteed industrial temperature performance-making it a functional and layout-compatible upgrade.
What is the maximum off-leakage current specification for ISL84051IAZ?
The ISL84051IAZ guarantees a maximum off-leakage current of 5nA at +85°C with ±5V supplies, measured at COM, NO, or NC terminals under VCOM = ±4.5V and VNO/NC = ±4.5V. At +25°C, typical leakage is 0.002nA. This ultra-low leakage is critical for high-impedance applications such as electrocardiograph front-ends and precision integrator reset circuits where even sub-nanoampere currents cause measurable drift.
Does the ISL84051IAZ support rail-to-rail analog signal operation?
Yes, the ISL84051IAZ supports true rail-to-rail analog signal operation: input and output signals may swing from V− to V+ without distortion or clipping. This is enabled by its fully differential CMOS switch architecture and internal level-shifting circuitry. For example, with V+ = +5V and V− = 0V, analog signals from 0V to +5V pass unattenuated; with V+ = +5V and V− = −5V, signals from −5V to +5V are fully supported-ideal for bipolar op-amp signal chains.
ISL84051IAZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 6Ohm (Max)
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- ±2V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 50ns, 40ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 21pF
- Current - Leakage (IS(off)) (Max):
- 2pA (Typ)
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
ISL84051IAZ FAQ
1.How can I place an order for ISL84051IAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL84051IAZ 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 ISL84051IAZ reliable?
The price and inventory of ISL84051IAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL84051IAZ is usually 5 days.
3.What payment methods are accepted for ISL84051IAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL84051IAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL84051IAZ?
ISL84051IAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL84051IAZ 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 ISL84051IAZ?
For technical support, including ISL84051IAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL84051IAZ requirements.
6.How does Aetrix verify that ISL84051IAZ is sourced from the original manufacturer or authorized distributors?
All ISL84051IAZ 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 ISL84051IAZ meets industry standards.
7.What is the process for return or replacement of ISL84051IAZ?
All ISL84051IAZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL84051IAZ, 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 ISL84051IAZ part is unused and in its original packaging.
Return procedure for ISL84051IAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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