ISL5120IB Equivalent & Substitute Parts

Part Overview

The ISL5120IB is a 2-circuit SPST-NO IC switch manufactured by Renesas Electronics Corporation, designed for single-supply operation from 2.7V to 12V. This component features 20Ohm on-state resistance and is packaged in an 8-SOIC surface-mount configuration. The ISL5120IB is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. Functionally equivalent alternatives from Analog Devices Inc./Maxim Integrated provide active product status with enhanced compliance certifications.

Key Parameters

Parameter	ISL5120IB
Switch Circuit Type	SPST - NO
Number of Circuits	2
Multiplexer/Demultiplexer Configuration	1:1
On-State Resistance (Max)	20Ohm
Channel-to-Channel Matching (ΔRon)	800mOhm
Supply Voltage Range (V+)	2.7V ~ 12V
Switch Time - Ton (Max)	35ns
Switch Time - Toff (Max)	30ns
Charge Injection	5pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF
Leakage Current (IS(off)) Max	100pA
Crosstalk	-105dB @ 1MHz
Operating Temperature Range	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the ISL5120IB are qualified based on the following critical parameters that determine functional equivalence:

Electrical Compatibility Criteria:

Switch circuit type: SPST - NO (maintained across all substitutes)
Number of circuits: 2 (maintained across all substitutes)
Multiplexer configuration: 1:1 (maintained across all substitutes)
Supply voltage range: 2.7V ~ 12V (maintained across all substitutes)
Channel-to-channel matching: 800mOhm (maintained across all substitutes)
Leakage current specification: 100pA maximum (maintained across all substitutes)
Package type: 8-SOIC surface mount (maintained across all substitutes)

Mechanical Compatibility:

Package dimensions: 8-SOIC (0.154", 3.90mm Width) - identical across all parts
Mounting type: Surface Mount - identical across all parts

The MAX4541 series (MAX4541CSA+, MAX4541CSA+T, MAX4541ESA+, MAX4541ESA+T) from Analog Devices Inc./Maxim Integrated maintains all core functional parameters while offering active product status and RoHS3 compliance. These parts differ in on-state resistance (60Ohm vs. 20Ohm), switch timing characteristics, and operating temperature ranges, which must be evaluated against specific application requirements.

Parameter Comparison

Parameter	ISL5120IB	MAX4541CSA+	MAX4541CSA+T	MAX4541ESA+	MAX4541ESA+T
Manufacturer	Renesas Electronics	Analog Devices Inc./Maxim	Analog Devices Inc./Maxim	Analog Devices Inc./Maxim	Analog Devices Inc./Maxim
Switch Circuit Type	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO
Number of Circuits	2	2	2	2	2
Multiplexer Configuration	1:1	1:1	1:1	1:1	1:1
On-State Resistance (Max)	20Ohm	60Ohm	60Ohm	60Ohm	60Ohm
Channel-to-Channel Matching (ΔRon)	800mOhm	800mOhm	800mOhm	800mOhm	800mOhm
Supply Voltage Range (V+)	2.7V ~ 12V	2.7V ~ 12V	2.7V ~ 12V	2.7V ~ 12V	2.7V ~ 12V
Switch Time - Ton (Max)	35ns	100ns	100ns	100ns	100ns
Switch Time - Toff (Max)	30ns	75ns	75ns	75ns	75ns
Charge Injection	5pC	1pC	1pC	1pC	1pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF	8pF, 8pF	8pF, 8pF	8pF, 8pF	8pF, 8pF
Leakage Current (IS(off)) Max	100pA	100pA	100pA	100pA	100pA
Crosstalk	-105dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz	-90dB @ 1MHz
Operating Temperature Range	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	-	Tube	Tape & Reel (TR)	Tube	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Product Status Consideration: The ISL5120IB is classified as obsolete. All MAX4541 series alternatives maintain active product status, ensuring continued availability and manufacturing support. Selection of an active substitute part is necessary for new designs and long-term production continuity.

Compliance and Certification: The ISL5120IB carries RoHS non-compliant status. All MAX4541 series substitutes are ROHS3 compliant, meeting current regulatory requirements for electronic components in regulated markets. This compliance advantage applies uniformly across all four MAX4541 variants.

Operating Temperature Range: Two temperature grades are available within the MAX4541 series. The MAX4541CSA+ and MAX4541CSA+T variants operate from 0°C to 70°C, suitable for commercial-grade applications. The MAX4541ESA+ and MAX4541ESA+T variants operate from -40°C to 85°C, matching the ISL5120IB temperature range and suitable for industrial and extended-temperature applications.

Packaging Format Selection: MAX4541CSA+ and MAX4541ESA+ are supplied in Tube packaging. MAX4541CSA+T and MAX4541ESA+T are supplied in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats respectively, accommodating different procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX4541 series parts directly replace the ISL5120IB in existing designs?

A: Electrical pin compatibility and functional operation are maintained. However, the on-state resistance differs (60Ohm vs. 20Ohm), which affects circuit performance in applications sensitive to switch resistance. Switch timing characteristics (Ton, Toff) are also slower in the MAX4541 series. Circuit validation is required to confirm suitability for specific applications.

Q: What is the primary difference between MAX4541CSA+ and MAX4541ESA+ variants?

A: The primary difference is operating temperature range. MAX4541CSA+ operates from 0°C to 70°C (commercial grade), while MAX4541ESA+ operates from -40°C to 85°C (industrial/extended grade). For applications requiring the full -40°C to 85°C range of the ISL5120IB, MAX4541ESA+ or MAX4541ESA+T must be selected.

Q: How do packaging formats differ among MAX4541 substitutes?

A: MAX4541CSA+ and MAX4541ESA+ are supplied in Tube format for manual handling and smaller quantities. MAX4541CSA+T is supplied in Tape & Reel (TR) format, and MAX4541ESA+T is supplied in Cut Tape (CT) & Digi-Reel® format. Tape and reel formats are optimized for automated assembly processes and larger production volumes.

Q: Are all MAX4541 variants RoHS3 compliant?

A: Yes. All four MAX4541 series variants (MAX4541CSA+, MAX4541CSA+T, MAX4541ESA+, MAX4541ESA+T) are ROHS3 compliant, providing regulatory compliance advantage over the RoHS non-compliant ISL5120IB.

Q: What electrical parameters remain identical between ISL5120IB and MAX4541 substitutes?

A: The following parameters are maintained: switch circuit type (SPST - NO), number of circuits (2), multiplexer configuration (1:1), channel-to-channel matching (800mOhm), supply voltage range (2.7V ~ 12V), channel capacitance (8pF, 8pF), and leakage current specification (100pA maximum). Package type (8-SOIC) and mounting type (surface mount) are also identical.

Q: Which MAX4541 variant should be selected for new production designs?

A: For new designs requiring industrial temperature range (-40°C to 85°C), select MAX4541ESA+ (Tube) or MAX4541ESA+T (Tape & Reel/Cut Tape). For commercial-grade applications (0°C to 70°C), MAX4541CSA+ (Tube) or MAX4541CSA+T (Tape & Reel) are suitable. Packaging format selection depends on assembly process requirements and procurement volume.

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