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Home > Products > Integrated Circuits (ICs) > Interface > Analog Switches, Multiplexers, Demultiplexers

Renesas ISL54056IRUZ-T

Name: ISL54056IRUZ-T
Brand: Renesas
SKU: ISL54056IRUZ-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ISL54056IRUZ-T

Manufacturer:: Renesas

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 16-UFQFN

Datasheet:: ISL54056IRUZ-T.pdf

Description:: IC SWITCH SPDTX4 550MOHM 16UTQFN

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Product details

Overview

ISL54056IRUZ-T from Intersil is a quad SPDT (dual DPDT) analog switch optimized for battery-powered portable equipment, featuring ultra-low ON-resistance (0.39 Ω at 4.3V), fast switching (t_ON = 30 ns, t_OFF = 16 ns), and single-supply operation from +1.65V to +4.5V. It enables signal routing in space-constrained mobile phones and audio/video multiplexing where low distortion and minimal insertion loss are critical.

For engineers reviewing the ISL54056IRUZ-T datasheet, ISL54056IRUZ-T pinout, ISL54056IRUZ-T application, or ISL54056IRUZ-T equivalent, key selection criteria include r_ON matching (≤0.05 Ω), break-before-make timing (3 ns), ESD robustness (9 kV on COM pins), and µTQFN-16 package compatibility with high-density PCB layouts.

Technical Context

The ISL54056IRUZ-T implements four independent bidirectional SPDT switches configured as two DPDT sections, each controlled by one logic input (IN1–2, IN3–4), enabling dual differential 2:1 mux/demux functionality. Its CMOS architecture uses level-shifted digital inputs to drive analog gate terminals, supporting 1.8V logic compatibility at 3V supply.

It features internal ESD diodes on all analog pins (9 kV HBM on COM, 6 kV elsewhere), operates with sub-microwatt power dissipation (<0.68 µW), and maintains r_ON flatness of ≤0.05 Ω across the full signal range - critical for high-fidelity audio and precision sensor signal routing.

Key Specifications

Parameter	Value and Actual Design Meaning
r_ON (4.3V)	0.39 Ω - enables <10 mΩ insertion loss in 50 Ω systems, preserving signal integrity in RF and audio paths
t_ON/t_OFF	30 ns / 16 ns - supports >10 MHz switching rates in test equipment and high-speed data acquisition
r_ON Matching	0.05 Ω - ensures channel-to-channel gain tracking within ±0.1% in multi-channel audio or instrumentation
Analog Range	0 V to V+ - allows rail-to-rail signal handling without clipping when V+ = 4.5V
ESD Rating (COM)	9 kV HBM - withstands IEC 61000-4-2 contact discharge in handheld device interfaces
Supply Range	+1.65V to +4.5V - supports direct connection to Li-ion battery (3.0–4.2V) or LDO outputs without level shifting
ICC (2.85V logic @ 4.2V V+)	12 µA max - minimizes standby current in always-on audio subsystems

Pinout & Package

ISL54056IRUZ-T is housed in a 16-lead 2.6 mm × 1.8 mm × 0.5 mm µTQFN package (Pb-free, RoHS compliant, JEDEC MO-255). The exposed pad is electrically connected to GND for thermal and EMI performance.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 4, 15	NC1, IN1–2, NO2, COM2	NC = Normally Closed; NO = Normally Open; COM = Common analog node per SPDT section
2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16	COM1, NO1, V+, NC4, COM4, NO4, IN3–4, NC3, NC2, GND, NO3, COM3	V+ powers internal CMOS switches and logic; GND is reference for analog/switching thresholds and ESD return path

Key Features

Feature	Design Value
Pin-compatible replacement	Direct drop-in for NLAS3799/NLAS3799L - eliminates PCB redesign in legacy mobile phone platforms
r_ON flatness	0.05 Ω over full signal range - reduces harmonic distortion (<0.008% THD) in audio line-level switching
Break-before-make	3 ns delay - prevents momentary short-circuit between signal sources during state transitions
Low charge injection	248 pC (4.3V) - limits voltage glitch on high-impedance nodes (e.g., sensor front-ends, DAC outputs)
1.8V logic compatibility	Valid VINH ≥ 1.4V at 3V supply - interfaces directly with modern AP/SoC GPIO without level shifters

Applications

Mobile Phone Signal Expansion	Portable Audio Multiplexing
Use Scenario: Expanding limited ASIC analog I/O in smartphones to support additional sensors, antennas, or audio codecs without redesigning baseband ICs. IC Role / Device Role / Timing Role: Quad SPDT analog switch acting as configurable signal router between shared analog buses and peripheral functions. Use Value: Enables "mux-in" of extra functionality while maintaining low r_ON and fast switching to avoid degrading RF sensitivity or audio SNR.	Use Scenario: Routing stereo line-in, mic-in, and headset signals in compact Bluetooth speakers or wearables with shared ADC/DAC resources. IC Role / Device Role / Timing Role: Dual DPDT switch implementing differential 2:1 mux/demux for balanced audio paths with matched channel characteristics. Use Value: Delivers <0.012% THD and >65 dB off-isolation at 100 kHz, preserving fidelity in consumer-grade audio products.
Medical Sensor Interface	Handheld Test Equipment
Use Scenario: Selecting between multiple biopotential electrodes (ECG, EMG) into a single high-precision instrumentation amplifier front-end. IC Role / Device Role / Timing Role: Low-leakage (±165 nA max) analog switch providing isolated signal paths with minimal DC offset error. Use Value: r_ON matching ≤0.05 Ω ensures consistent gain scaling across channels, critical for differential measurement accuracy.	Use Scenario: Configuring signal paths in portable oscilloscope probes or multimeter front-ends requiring fast, low-distortion switching between ranges and inputs. IC Role / Device Role / Timing Role: High-bandwidth (104 MHz -3 dB) analog switch enabling accurate AC coupling and attenuation control. Use Value: 30 ns t_ON and 16 ns t_OFF support real-time reconfiguration during automated test sequences without signal interruption.

Mobile Phone Signal Expansion

Portable Audio Multiplexing

Use Scenario: Expanding limited ASIC analog I/O in smartphones to support additional sensors, antennas, or audio codecs without redesigning baseband ICs.

IC Role / Device Role / Timing Role: Quad SPDT analog switch acting as configurable signal router between shared analog buses and peripheral functions.

Use Value: Enables "mux-in" of extra functionality while maintaining low r_ON and fast switching to avoid degrading RF sensitivity or audio SNR.

Use Scenario: Routing stereo line-in, mic-in, and headset signals in compact Bluetooth speakers or wearables with shared ADC/DAC resources.

IC Role / Device Role / Timing Role: Dual DPDT switch implementing differential 2:1 mux/demux for balanced audio paths with matched channel characteristics.

Use Value: Delivers <0.012% THD and >65 dB off-isolation at 100 kHz, preserving fidelity in consumer-grade audio products.

Medical Sensor Interface

Handheld Test Equipment

Use Scenario: Selecting between multiple biopotential electrodes (ECG, EMG) into a single high-precision instrumentation amplifier front-end.

IC Role / Device Role / Timing Role: Low-leakage (±165 nA max) analog switch providing isolated signal paths with minimal DC offset error.

Use Value: r_ON matching ≤0.05 Ω ensures consistent gain scaling across channels, critical for differential measurement accuracy.

Use Scenario: Configuring signal paths in portable oscilloscope probes or multimeter front-ends requiring fast, low-distortion switching between ranges and inputs.

IC Role / Device Role / Timing Role: High-bandwidth (104 MHz -3 dB) analog switch enabling accurate AC coupling and attenuation control.

Use Value: 30 ns t_ON and 16 ns t_OFF support real-time reconfiguration during automated test sequences without signal interruption.

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
NLAS3799MUTAG	Same pinout, identical r_ON (0.39 Ω @ 4.3V), but lower ESD rating (6 kV HBM on COM vs 9 kV)	Suitable for cost-sensitive industrial controls where board-level ESD protection is added externally	Prefer ISL54056IRUZ-T for handheld devices requiring native 9 kV COM-pin ESD robustness
ISL54050IRUZ-T	Recommended replacement per Intersil; same µTQFN-16 package, but improved r_ON flatness (0.03 Ω) and lower charge injection (180 pC)	Better suited for high-precision medical or audio applications demanding tighter signal fidelity	Choose ISL54056IRUZ-T only for legacy design continuity; ISL54050IRUZ-T offers superior specs for new designs

Compared with NLAS3799MUTAG and ISL54050IRUZ-T, the ISL54056IRUZ-T provides the highest native ESD tolerance on COM pins and proven integration in mobile phone platforms, while offering a documented migration path to ISL54050IRUZ-T for enhanced performance.

Availability

ISL54056IRUZ-T is available at Aetrix Electronics and suitable for cellular phone signal expansion, portable audio multiplexing, and medical sensor interface applications requiring stable component supply and long-term production continuity.

Supply support for ISL54056IRUZ-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) designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications, operating under ISO9001 quality systems.

The ISL54056IRUZ-T belongs to Intersil's ultra-low r_ON analog switch family, engineered specifically for battery-powered portable electronics where minimal power loss, small footprint, and high signal fidelity are mandatory.

FAQ

What is the maximum supply voltage rating for ISL54056IRUZ-T?

The absolute maximum V+ to GND rating for ISL54056IRUZ-T is 5.5V, with recommended operating range +1.65V to +4.5V. This 5.5V headroom accommodates 10% supply tolerance on 4.3V rails and transient noise spikes without latch-up risk, as confirmed in the Absolute Maximum Ratings table on page 3 of FN6357 Rev 4.00.

Does ISL54056IRUZ-T support rail-to-rail analog signal switching?

Yes, ISL54056IRUZ-T supports rail-to-rail analog signal switching: its analog signal range is specified as 0V to V+, meaning it passes signals from ground up to the positive supply rail without clipping - verified across all tested supply voltages (1.65V, 3.0V, and 4.3V) in the Electrical Specifications tables on pages 3–5.

Is ISL54056IRUZ-T pin-compatible with NLAS3799 devices?

Yes, ISL54056IRUZ-T is explicitly stated as pin-compatible with NLAS3799 and NLAS3799L in the datasheet Features section and Table 1. Pin mapping, package dimensions (16-lead µTQFN), and terminal functions match exactly, enabling drop-in replacement without layout changes.

What is the typical charge injection value for ISL54056IRUZ-T at 4.3V supply?

The typical charge injection for ISL54056IRUZ-T is 248 pC at V+ = 4.3V, measured with CL = 1.0 nF and RG = 0 Ω per Figure 2 and the Electrical Specifications table on page 3. This low value minimizes voltage glitches on high-impedance nodes such as sensor outputs or DAC reference paths.

How does ISL54056IRUZ-T achieve 1.8V logic compatibility?

ISL54056IRUZ-T achieves 1.8V logic compatibility by specifying VINH ≥ 1.4V and VINL ≤ 0.5V when operated from a +3.0V supply, aligning with standard 1.8V CMOS output levels. This is validated in the Digital Input Characteristics tables and Logic-Level Thresholds section on page 8 of FN6357 Rev 4.00.

ISL54056IRUZ-T Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Switch Circuit:: SPDT

Multiplexer/Demultiplexer Circuit:: 2:1

Number of Circuits:: 4

On-State Resistance (Max):: 550mOhm

Channel-to-Channel Matching (ΔRon):: 50mOhm

Voltage - Supply, Single (V+):: 1.65V ~ 4.5V

Voltage - Supply, Dual (V±):: -

Switch Time (Ton, Toff) (Max):: 33ns, 16ns

-3db Bandwidth:: -

Charge Injection:: 248pC

Channel Capacitance (CS(off), CD(off)):: 38pF

Current - Leakage (IS(off)) (Max):: 70nA

Crosstalk:: -85dB @ 100kHz

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-UTQFN (2.6x1.8)

ISL54056IRUZ-T FAQ

1.How can I place an order for ISL54056IRUZ-T through Aetrix?

Please submit a Request for Quotation (RFQ) for ISL54056IRUZ-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 ISL54056IRUZ-T reliable?

The price and inventory of ISL54056IRUZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL54056IRUZ-T is usually 5 days.

3.What payment methods are accepted for ISL54056IRUZ-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL54056IRUZ-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ISL54056IRUZ-T?

ISL54056IRUZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ISL54056IRUZ-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 ISL54056IRUZ-T?

For technical support, including ISL54056IRUZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL54056IRUZ-T requirements.

6.How does Aetrix verify that ISL54056IRUZ-T is sourced from the original manufacturer or authorized distributors?

All ISL54056IRUZ-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 ISL54056IRUZ-T meets industry standards.

7.What is the process for return or replacement of ISL54056IRUZ-T?

All ISL54056IRUZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL54056IRUZ-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 ISL54056IRUZ-T part is unused and in its original packaging.

Return procedure for ISL54056IRUZ-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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