Renesas ISL84581IVZ-T

Overview

ISL84581IVZ-T from Intersil is a low-voltage, single/dual-supply 8-to-1 analog multiplexer with rail-to-rail signal handling, 39Ω ON-resistance at ±5V, 38ns turn-on time, and an inhibit pin for simultaneous channel disable. It operates from +2V to +12V single supply or ±2V to ±6V dual supply and is used in precision signal routing for medical imaging front-ends and telecom infrastructure.

For engineers reviewing the ISL84581IVZ-T datasheet, ISL84581IVZ-T pinout, ISL84581IVZ-T application, or ISL84581IVZ-T equivalent, key selection criteria include guaranteed break-before-make timing, sub-2Ω r_ON matching across channels, <0.2nA off-leakage at +85°C, and compatibility with TTL/CMOS logic at 3.3V, 5V, and ±5V supplies.

Technical Context

The ISL84581IVZ-T implements a single-pole, eight-throw (SP8T) CMOS analog switch architecture with level-shifted digital control logic powered by V+ and GND, enabling TTL/CMOS compatibility across supply voltages from 2.7V to 10V. Its internal gate drive uses V+ and V− to bias analog switches, supporting rail-to-rail signal ranges up to ±5V or 0–12V.

It features guaranteed break-before-make switching (2–9 ns), low charge injection (≤1 pC at ±5V), and high off-isolation (>92 dB at 100 kHz). The inhibit function opens all paths simultaneously without requiring address reconfiguration, and supply sequencing must ensure V+/V− are applied before digital or analog signals to avoid ESD diode conduction.

Key Specifications

Pinout & Package

ISL84581IVZ-T is housed in a 16-lead TSSOP package (4.4 mm width, M16.173 drawing), RoHS-compliant with matte tin (e3) termination. Thermal resistance θ_JA is 110°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4617ESE+ and ADG708BRUZ, the ISL84581IVZ-T uniquely supports both single- and dual-supply operation across 2V–12V and ±2V–±6V ranges, includes a dedicated inhibit pin, and delivers best-in-class r_ON matching (<2Ω) for amplitude-critical medical and test equipment.

Availability

ISL84581IVZ-T is available at Aetrix Electronics and suitable for medical ultrasound, telecom infrastructure, and electrocardiograph applications requiring stable component supply, long-term lifecycle management, and RoHS-compliant packaging.

Supply support for ISL84581IVZ-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 ICs for precision signal conditioning, power management, and interface applications.

The ISL84581IVZ-T belongs to Intersil's precision analog switch product line, engineered for low-leakage, low-distortion signal routing in medical imaging, test instrumentation, and communications systems operating across wide supply and temperature ranges.

FAQ

What supply configurations does the ISL84581IVZ-T support?

The ISL84581IVZ-T supports single-supply operation from +2V to +12V and dual-supply operation from ±2V to ±6V. For single-supply use, V− is connected to GND. Its design ensures full rail-to-rail analog signal handling across all supported supply conditions, with verified performance at ±5V, +5V, +3.3V, and +12V. The ISL84581IVZ-T maintains specified r_ON, leakage, and switching times within these ranges.

Does the ISL84581IVZ-T have break-before-make switching?

Yes, the ISL84581IVZ-T guarantees break-before-make operation with a typical delay of 2–9 ns depending on supply voltage and temperature. This prevents momentary shorting between channels during address transitions, which is essential for avoiding signal corruption in sensitive applications like MRI front-ends and multi-channel data acquisition. The ISL84581IVZ-T specification explicitly confirms this behavior in its Electrical Specifications table.

What is the maximum allowable analog input voltage relative to supplies for the ISL84581IVZ-T?

The ISL84581IVZ-T allows analog inputs (NOx, COM) to swing from V− to V+, i.e., full rail-to-rail operation. Absolute maximum ratings permit signals from −0.3V to (V+ + 0.3V), but normal operation requires staying within V− and V+. Internal ESD diodes clamp signals exceeding these limits, so sustained overvoltage risks forward conduction and increased leakage. The ISL84581IVZ-T datasheet specifies VANALOG = V− to V+ across all supply conditions.

How does the INH pin function on the ISL84581IVZ-T?

The INH (inhibit) pin on the ISL84581IVZ-T is an active-high digital control input that simultaneously opens all eight analog switches when driven to V+. When INH is low (≤0.8V), normal address-controlled switching resumes. This feature enables system-level fault protection or synchronized channel disabling without changing ADDA–ADDC states. The ISL84581IVZ-T truth table and Pin Descriptions section confirm INH overrides address decoding.

Is the ISL84581IVZ-T RoHS compliant and what is its termination finish?

Yes, the ISL84581IVZ-T is RoHS compliant and uses 100% matte tin (e3) termination finish. It employs Pb-free material sets including molding compounds and die attach materials, and meets IPC/JEDEC J-STD-020 reflow requirements for both SnPb and Pb-free soldering. The ISL84581IVZ-T ordering information and Pb-free notes in the datasheet explicitly state its e3 classification and compatibility with standard reflow profiles.