Renesas ISL54217IRTZ-T

Overview

ISL54217IRTZ-T from Renesas is a dual SP3T analog switch IC designed for shared USB 2.0 high-speed (480Mbps) and stereo audio multiplexing in portable devices. It integrates two 2.3Ω audio switches and four 6.2Ω USB switches, supports ±1V ground-referenced audio signals with <0.03% THD+N at 5mW into 32Ω, and delivers 700MHz -3dB bandwidth for USB paths. It enables single-connector integration in MP3 players and mobile phones.

For engineers reviewing the ISL54217IRTZ-T datasheet, ISL54217IRTZ-T pinout, ISL54217IRTZ-T application, or ISL54217IRTZ-T equivalent, key selection considerations include its dual-mode logic control (C0/C1), COM-pin overvoltage tolerance to 5.5V, power-off protection, clickless audio switching, and compliance with USB 2.0 short-circuit requirements without external components.

Technical Context

The ISL54217IRTZ-T implements a dual SP3T architecture with independent audio (L/R) and USB (1D±/2D±) signal paths, controlled by two logic inputs (C0, C1) that select among five states: All OFF, USB1, USB2, Audio, and Audio Mute. Its break-before-make timing (52ns) prevents signal contention during mode transitions.

Each audio switch supports rail-to-rail ±1.5V analog range and features integrated click/pop suppression via shunt circuitry; each USB switch maintains low ON-capacitance (8pF typical COM ON capacitance) and preserves signal integrity with <210ps total jitter at 480Mbps, meeting USB 2.0 eye diagram specifications.

Key Specifications

Pinout & Package

The ISL54217IRTZ-T is packaged in a 12-lead 3mm × 3mm TQFN (Pb-free, RoHS compliant) with exposed thermal pad (PD) tied to GND for enhanced thermal performance (θ_JA = 58°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-mode analog multiplexer applications.

Compared with TS3USB221ERSER and MAX4989ETE+, the ISL54217IRTZ-T uniquely supports dual independent USB transceivers, guaranteed 5.5V COM overvoltage tolerance, and hardware-enforced Audio MUTE with 1kΩ shunts-critical for robust shared-jack implementations in premium portable audio.

Availability

ISL54217IRTZ-T is available at Aetrix Electronics and suitable for MP3 players, cellular phones, and personal media players requiring stable component supply, USB 2.0 high-speed signal integrity, low-distortion audio routing, and shared-connector reliability.

Supply support for ISL54217IRTZ-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 microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and consumer markets.

The ISL54217IRTZ-T belongs to Renesas' precision analog switch portfolio, engineered specifically for space-constrained portable devices needing concurrent USB 2.0 and stereo audio routing through a single physical connector.

FAQ

What is the function of the C0 and C1 control pins on the ISL54217IRTZ-T?

The C0 and C1 pins on the ISL54217IRTZ-T are dual logic inputs that decode five operational states: All OFF, USB1, USB2, Audio, and Audio Mute. With internal 4MΩ pull-downs, they accept 0.5V/1.4V logic thresholds (VDD = 2.7–3.6V) and tolerate up to 5.25V regardless of supply voltage. Their sequencing determines path selection and click/pop activation, making precise timing critical for reliable USB/audio handover in the ISL54217IRTZ-T.

Does the ISL54217IRTZ-T support true USB 2.0 high-speed (480Mbps) operation?

Yes, the ISL54217IRTZ-T fully supports USB 2.0 high-speed operation at 480Mbps. Its USB switches deliver 700MHz -3dB bandwidth, <210ps total jitter, and <75ps skew-meeting USB 2.0 eye diagram and signal quality requirements. Measured ON-capacitance is 8pF (COM), and propagation delay degradation is only 250ps, ensuring minimal edge distortion in the ISL54217IRTZ-T signal path.

How does the ISL54217IRTZ-T prevent audible click/pop noise during audio switching?

The ISL54217IRTZ-T prevents audible click/pop noise using dedicated hardware shunt circuitry activated in All OFF and USB modes. When transitioning out of Audio mode, it engages low-impedance paths at the L/R pins while disconnecting COM-side 1kΩ shunts-diverting transients away from headphones. This design achieves measured click/pop energy of just 75µVp (DC step) and 520µVp (AC-coupled square wave), ensuring silent operation in the ISL54217IRTZ-T.

What package type and thermal characteristics apply to the ISL54217IRTZ-T?

The ISL54217IRTZ-T uses a 12-lead 3mm × 3mm TQFN package (Ordering Code: ISL54217IRTZ-T) with exposed thermal pad (PD). Its thermal resistance is θ_JA = 58°C/W and θ_JC = 1.0°C/W (case temp at center of pad), enabling efficient heat dissipation in compact portable layouts. The package is Pb-free, RoHS compliant, and rated MSL-1 per JEDEC J-STD-020, matching the ISL54217IRTZ-T's -40°C to +85°C operating range.

Can the ISL54217IRTZ-T withstand VBUS shorts on the COM pins?

Yes, the ISL54217IRTZ-T withstands VBUS shorts on COM+ and COM- pins up to 5.5V-even when VDD = 0V-thanks to integrated fault protection. In this condition, leakage current is limited to ≤4µA, and no stress occurs on the die. When VDD is active (2.7–4.6V), fault voltage passes through an active channel; however, normal USB/audio operation is not guaranteed until the fault is removed, a defined behavior of the ISL54217IRTZ-T.