ISL84544CBZ Equivalent & Substitute Parts

Part Overview

The ISL84544CBZ is a single-circuit SPDT (Single Pole Double Throw) analog switch manufactured by Renesas Electronics Corporation, designed for signal routing and multiplexing applications in the 2.7V to 12V supply range. This component features 60Ohm on-state resistance and is housed in an 8-SOIC package. The ISL84544CBZ is currently classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternatives from both Renesas and Analog Devices maintain identical electrical performance while offering extended temperature ranges and improved availability.

Substiute Parts

ISL84544CBZ

Renesas Electronics CorporationIn Stock: 8622ISL84544CBZ Datasheet

Current PartRFQ

ISL84544IHZ-T

Renesas Electronics CorporationIn Stock: 4302ISL84544IHZ-T Datasheet

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MAX4544CSA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3262MAX4544CSA+T Datasheet

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MAX4544ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2161MAX4544ESA+ Datasheet

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MAX4544ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 15669MAX4544ESA+T Datasheet

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MAX4544CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2201MAX4544CSA+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISL84544CBZ is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Switch circuit type: SPDT
• Multiplexer configuration: 2:1
• On-state resistance: 60Ohm maximum
• Channel-to-channel matching: 800mOhm
• Supply voltage range: 2.7V ~ 12V minimum
• Switch timing: 100ns (Ton) / 75ns (Toff) maximum
• Charge injection: 1pC
• Channel capacitance: 8pF (both CS(off) and CD(off))
• Leakage current: 100pA maximum
• Crosstalk: -90dB @ 1MHz

Package Compatibility: Substitutes are grouped into two categories based on package type: 8-SOIC (direct footprint replacement) and 6-SOT (alternative package requiring PCB layout modification).

Compliance Requirements: All substitute parts maintain ROHS3 compliance, MSL Level 1, and EAR99 classification, ensuring regulatory and supply chain compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Footprint Replacement (8-SOIC Package): For applications requiring no PCB layout modification, the MAX4544ESA+T offers the highest inventory availability (15,600 pcs) with extended operating temperature range (-40°C to 85°C) and active product status. The MAX4544CSA+T provides equivalent electrical performance in Tape & Reel packaging with 3,225 pcs in stock. Both Analog Devices parts are suitable for designs operating within the 0°C to 70°C range of the original ISL84544CBZ.

Alternative Package Option (6-SOT): The ISL84544IHZ-T from Renesas maintains manufacturer continuity while offering extended temperature range (-40°C to 85°C) and active product status. This part requires PCB layout modification due to the 6-SOT package footprint but provides 4,230 pcs inventory availability.

Compliance and Regulatory Alignment: All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and EAR99 classification, ensuring compatibility with existing supply chain and regulatory requirements. Selection between Renesas and Analog Devices alternatives depends on design preference and inventory requirements rather than electrical or compliance differences.

Frequently Asked Questions (FAQ)

Q: Can the ISL84544IHZ-T (6-SOT) be used as a direct replacement for the ISL84544CBZ (8-SOIC)?

A: No. While electrically equivalent, the ISL84544IHZ-T uses a different package footprint (6-SOT versus 8-SOIC). PCB layout modification is required. Direct footprint replacement requires an 8-SOIC packaged alternative such as MAX4544ESA+T, MAX4544CSA+T, MAX4544ESA+, or MAX4544CSA+.

Q: What is the difference between MAX4544ESA+ and MAX4544ESA+T?

A: Both parts are electrically identical with identical operating temperature range (-40°C to 85°C). The difference is packaging format: MAX4544ESA+ is supplied in Tube packaging, while MAX4544ESA+T is supplied in Cut Tape & Digi-Reel format. Selection depends on production volume and handling requirements.

Q: Are there temperature range differences between substitutes?

A: Yes. The ISL84544CBZ and MAX4544CSA+ operate from 0°C to 70°C. The ISL84544IHZ-T, MAX4544ESA+, and MAX4544ESA+T extend the range to -40°C to 85°C. For applications requiring the original 0°C to 70°C range, MAX4544CSA+ and MAX4544CSA+T are appropriate selections.

Q: Do all substitute parts maintain the same electrical specifications?

A: Yes. All substitute parts listed maintain identical on-state resistance (60Ohm), channel-to-channel matching (800mOhm), supply voltage range (2.7V to 12V), switch timing (100ns/75ns), charge injection (1pC), channel capacitance (8pF), leakage current (100pA), and crosstalk (-90dB @ 1MHz).

Q: Which substitute offers the best inventory availability?

A: MAX4544ESA+T provides the highest inventory with 15,600 pcs in stock, followed by ISL84544IHZ-T with 4,230 pcs. Both are active products with extended temperature range support.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL Level 1 rating and EAR99 classification, matching the compliance profile of the original ISL84544CBZ.