ISL8484IU-T Equivalent & Substitute Parts

Part Overview

The ISL8484IU-T is a 2-circuit SPDT analog switch manufactured by Renesas Electronics Corporation, designed for low-voltage signal routing applications. This device features 500mOhm on-state resistance and operates across a 1.65V to 4.5V supply range, making it suitable for portable and battery-powered systems. The ISL8484IU-T is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Switch Circuit Configuration	SPDT (Single Pole Double Throw)
Multiplexer/Demultiplexer Circuit	2:1
Number of Circuits	2
On-State Resistance (Max)	500mOhm
Channel-to-Channel Matching (ΔRon)	60mOhm
Supply Voltage Range (V+)	1.65V ~ 4.5V
Switch Time (Ton/Toff Max)	40ns / 20ns
Charge Injection	170pC
Channel Capacitance (CS(off), CD(off))	62pF
Leakage Current (IS(off) Max)	100nA
Crosstalk	-85dB @ 100kHz
Operating Temperature Range	-40°C ~ 85°C
Package Type	10-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution of the ISL8484IU-T is determined by strict equivalence across the following critical parameters:

Switch circuit topology (SPDT configuration with 2:1 multiplexing)
Number of independent circuits (2 circuits)
On-state resistance specification (500mOhm maximum)
Channel-to-channel matching tolerance (60mOhm ΔRon)
Supply voltage compatibility (1.65V ~ 4.5V single supply)
Switch timing characteristics (40ns Ton, 20ns Toff maximum)
Charge injection and capacitance parameters
Leakage current specification (100nA maximum)
Package footprint and pinout (10-MSOP)
Operating temperature range (-40°C ~ 85°C)

The ISL8484IUZ-T meets all these criteria as a direct functional equivalent, with identical electrical specifications and the same 10-MSOP package configuration.

Parameter Comparison

Parameter	ISL8484IU-T	ISL8484IUZ-T
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Switch Circuit	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1
Number of Circuits	2	2
On-State Resistance (Max)	500mOhm	500mOhm
Channel-to-Channel Matching (ΔRon)	60mOhm	60mOhm
Supply Voltage (V+)	1.65V ~ 4.5V	1.65V ~ 4.5V
Switch Time (Ton Max)	40ns	40ns
Switch Time (Toff Max)	20ns	20ns
Charge Injection	170pC	170pC
Channel Capacitance (CS(off), CD(off))	62pF	62pF
Leakage Current (IS(off) Max)	100nA	100nA
Crosstalk	-85dB @ 100kHz	-85dB @ 100kHz
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	10-MSOP	10-MSOP
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging Format	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

The ISL8484IUZ-T is the direct equivalent for the obsolete ISL8484IU-T. Both parts share identical electrical specifications and package configurations, ensuring pin-for-pin compatibility and functional interchangeability in circuit designs.

The ISL8484IUZ-T offers additional advantages for new designs and production: it maintains active product status with Renesas Electronics, ensuring long-term availability and supply chain stability. The ISL8484IUZ-T is ROHS3 compliant, meeting current environmental and regulatory requirements for commercial and industrial applications. The Tape & Reel packaging format of the ISL8484IUZ-T supports automated assembly processes, reducing handling costs and improving production efficiency compared to tube packaging.

For legacy systems currently using the ISL8484IU-T, the ISL8484IUZ-T provides a direct replacement without circuit redesign or board layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the ISL8484IUZ-T replace the ISL8484IU-T in existing designs?

A: Yes. The ISL8484IUZ-T is a direct equivalent with identical electrical specifications, pin configuration, and 10-MSOP package footprint. No circuit modifications are required.

Q: What is the primary difference between these two parts?

A: The ISL8484IU-T is obsolete, while the ISL8484IUZ-T is an active product. The ISL8484IUZ-T is ROHS3 compliant and supplied in Tape & Reel format, whereas the ISL8484IU-T is RoHS non-compliant and supplied in tube packaging.

Q: Are the pin assignments identical between ISL8484IU-T and ISL8484IUZ-T?

A: Yes. Both parts use the same 10-MSOP package with identical pinout, enabling direct board-level substitution.

Q: Does the packaging format affect electrical performance?

A: No. Tape & Reel and tube packaging formats do not affect the electrical characteristics or performance of the integrated circuit. The packaging format impacts only handling, storage, and assembly processes.

Q: Is the ISL8484IUZ-T suitable for new product designs?

A: Yes. The ISL8484IUZ-T is an active product with ROHS3 compliance, making it the appropriate choice for new designs requiring a 2-circuit SPDT analog switch with 500mOhm on-state resistance and 1.65V to 4.5V supply operation.

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