Renesas ISL54054IRUZ-T

Overview

ISL54054IRUZ-T from Intersil is a dual-channel, normally open (NO), single-pole single-throw (SPST) analog switch with ultra-low ON-resistance (0.34 Ω at 5 V), 12 ns turn-on/turn-off time, and single-supply operation from +1.8 V to +5.5 V. It features two signal pins (pins 1 and 3) simultaneously switched to a common pin (pin 4) under control of one logic input (pin 6), enabling SPST or 1:2 distribution switching in portable audio routing and battery-powered sensor multiplexing.

For engineers reviewing the ISL54054IRUZ-T datasheet, ISL54054IRUZ-T pinout, ISL54054IRUZ-T application, or ISL54054IRUZ-T equivalent, key selection criteria include verified r_ON flatness (0.13 Ω at 4.5 V), ESD robustness (>6 kV HBM), 1.8 V logic compatibility, and μTDFN package thermal performance (θ_JA = 175 °C/W).

Technical Context

The ISL54054IRUZ-T implements a bi-directional CMOS analog switch architecture with integrated level-shifting logic, enabling direct 1.8 V–3.6 V logic drive without external translators. Its dual NO configuration uses shared control (IN on pin 6) to concurrently connect/disconnect both signal paths (NO1 and NO2) to COM (pin 4), supporting either independent SPST use or parallel-connected operation for halved r_ON.

It operates exclusively from a single positive supply (V+), with analog signal range limited to 0 V to V+, and requires strict supply sequencing (V+ applied before signals) to prevent forward-biasing internal ESD diodes. No bipolar or split-supply operation is supported.

Key Specifications

Pinout & Package

ISL54054IRUZ-T is packaged in a 6-lead ultra-thin dual flat no-lead (μTDFN) package, 1.2 mm × 1.0 mm × 0.5 mm, with wettable flank terminations (Pb-free, RoHS compliant, MSL 1). Pin 1 identifier is marked by a mold feature within the top-left corner zone.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ISL54050IRUZ-T, the ISL54054IRUZ-T offers marginally higher r_ON at 1.8 V but maintains identical timing and package compatibility; versus TMUX1574RTER, it delivers true hardware-synchronized dual NO switching without added logic, critical for glitch-free distribution routing.

Availability

ISL54054IRUZ-T is available at Aetrix Electronics and suitable for portable audio routing, battery-powered sensor multiplexing, and low-voltage test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant μTDFN packaging.

Supply support for ISL54054IRUZ-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) is a U.S.-based semiconductor company specializing in precision analog, power management, and interface ICs for industrial, computing, and communications markets.

The ISL54054 product line was designed for ultra-low r_ON, fast-switching analog signal routing in space-constrained, battery-operated systems-emphasizing single-supply simplicity, 1.8 V logic compatibility, and minimal board footprint.

FAQ

What is the maximum continuous current rating for ISL54054IRUZ-T?

The ISL54054IRUZ-T supports ±300 mA continuous current per NO pin or COM pin. This rating applies across the full operating temperature range (-40°C to +85°C) and ensures reliable conduction without thermal derating in typical handheld device loads. Peak pulsed current is ±600 mA (1 ms, 10% duty cycle). Exceeding ±300 mA continuously risks junction overheating given its μTDFN thermal resistance (θ_JA = 175 °C/W).

Can ISL54054IRUZ-T operate with a 1.8 V supply and still drive standard 3.3 V logic inputs?

No. The ISL54054IRUZ-T's digital input (IN, pin 6) is 1.8 V logic compatible only when the V+ supply is between 2.7 V and 3.6 V (V_INL ≤ 0.5 V, V_INH ≥ 1.4 V). At 1.8 V supply, the input thresholds degrade (V_INL ≈ 0.1 V), making it unsuitable for driving standard 3.3 V logic. For 3.3 V logic interfacing, operate ISL54054IRUZ-T with V+ ≥ 2.7 V.

How does connecting NO1 and NO2 affect the ON-resistance of ISL54054IRUZ-T?

When NO1 (pin 1) and NO2 (pin 3) are externally shorted and driven together, the effective r_ON of the resulting SPST switch is halved - e.g., from 0.34 Ω to 0.17 Ω at 5 V - because the two parallel switch elements share current. This configuration is explicitly validated in FN6461 and reduces conduction loss in high-current analog paths without requiring additional components.

Is ISL54054IRUZ-T pin-compatible with ISL54055IRUZ-T?

Yes, ISL54054IRUZ-T and ISL54055IRUZ-T share identical μTDFN-6 pinouts and package dimensions (L6.1.2x1.0A), but differ functionally: ISL54054IRUZ-T is normally open (ON when IN = high), while ISL54055IRUZ-T is normally closed (ON when IN = low). Swapping them requires inverting the control logic signal to maintain correct switch state behavior.

What is the off-isolation performance of ISL54054IRUZ-T at 100 kHz?

At 100 kHz in a 50 Ω system, ISL54054IRUZ-T achieves 83 dB off-isolation when used with a single NO input (e.g., NO1 only), and 74 dB when both NO1 and NO2 are connected to COM. This high isolation suppresses crosstalk between inactive signal paths - critical in multi-source audio or sensor routing where signal integrity must be preserved even when adjacent channels are active.