ISL84542CPZ Equivalent & Substitute Parts

Part Overview

The ISL84542CPZ is a 2-circuit SPST-NC (Single Pole Single Throw - Normally Closed) analog switch manufactured by Renesas Electronics Corporation. This device functions as a precision electronic switch with 60Ohm on-state resistance, designed for signal routing and multiplexing applications in analog and mixed-signal systems. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

ISL84542CPZ

Renesas Electronics CorporationIn Stock: 1074ISL84542CPZ Datasheet

Current PartRFQ

MAX324CPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 750MAX324CPA+ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISL84542CPZ is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

• Switch circuit topology: SPST - NC configuration
• Circuit count: 2 independent circuits
• Multiplexer ratio: 1:1
• On-state resistance: 60Ohm maximum
• Channel-to-channel matching: 800mOhm
• Package type: 8-DIP (0.300", 7.62mm) through-hole
• Pin-to-pin compatibility: 8-PDIP supplier package

Acceptable Parameter Variations:

• Supply voltage range may exceed the original specification (higher maximum voltage acceptable)
• Switch timing parameters may be faster than the original (lower maximum values acceptable)
• Leakage current and crosstalk performance may be equal or superior
• Channel capacitance may vary within ±1pF tolerance
• Operating temperature range must meet or exceed the original specification

The MAX324CPA+ from Analog Devices Inc./Maxim Integrated meets all mandatory matching criteria and represents a direct functional equivalent for the obsolete ISL84542CPZ.

Parameter Comparison

Engineering Selection Recommendations

The MAX324CPA+ is a direct functional substitute for the ISL84542CPZ based on the following engineering criteria:

Electrical Equivalence: Both devices share identical switch circuit topology, circuit count, on-state resistance, and matching specifications. The MAX324CPA+ operates across a wider supply voltage range (2.7V ~ 16V versus 2.7V ~ 12V), providing enhanced flexibility for systems with variable power supplies. Switch timing parameters of the MAX324CPA+ are slightly slower but remain well within acceptable margins for most analog switching applications.

Package and Mechanical Compatibility: Both parts utilize the 8-DIP (0.300", 7.62mm) through-hole package with identical pin assignments, enabling direct PCB-level substitution without layout modifications.

Compliance and Regulatory Status: Both devices maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and identical REACH and ECCN classifications. The MAX324CPA+ carries active product status from Analog Devices Inc./Maxim Integrated, ensuring long-term availability and supply chain continuity compared to the obsolete ISL84542CPZ.

Procurement Advantage: The MAX324CPA+ is currently available in production quantities (735 Pcs in stock), providing immediate procurement capability for design updates, system repairs, and new production builds.

Frequently Asked Questions (FAQ)

Q: Can the MAX324CPA+ be used as a direct replacement for the ISL84542CPZ in existing designs?

A: Yes. The MAX324CPA+ is pin-compatible and electrically equivalent. Both devices feature identical 8-DIP packaging, SPST-NC switch topology, 2-circuit configuration, and 60Ohm on-state resistance. No PCB modifications or design changes are required for substitution.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Supply voltage range—MAX324CPA+ supports 2.7V ~ 16V versus ISL84542CPZ at 2.7V ~ 12V; (2) Switch timing—MAX324CPA+ has slightly slower turn-on (150ns vs 100ns) and turn-off (100ns vs 75ns) times; (3) Channel capacitance—MAX324CPA+ is rated at 9pF versus 8pF; (4) Crosstalk—MAX324CPA+ is -85dB versus -90dB. All variations remain within acceptable engineering tolerances for analog switching applications.

Q: Are there any thermal or operating condition limitations when substituting the MAX324CPA+?

A: Both devices share identical operating temperature ranges (0°C ~ 70°C) and moisture sensitivity levels (MSL 1 - Unlimited). No additional thermal management or environmental considerations are introduced by the substitution.

Q: What is the packaging format for the MAX324CPA+?

A: The MAX324CPA+ is supplied in 8-DIP through-hole packaging with 0.300" (7.62mm) body width, identical to the ISL84542CPZ. Standard through-hole soldering processes apply without modification.

Q: Is the MAX324CPA+ RoHS compliant?

A: Yes. The MAX324CPA+ is ROHS3 compliant and carries identical regulatory certifications (REACH Unaffected, ECCN EAR99) as the ISL84542CPZ, ensuring compatibility with environmental and export compliance requirements.

Q: Why is the ISL84542CPZ listed as obsolete?

A: The ISL84542CPZ has been discontinued by Renesas Electronics Corporation. The MAX324CPA+ represents the recommended equivalent from an active manufacturer, ensuring continued availability and technical support for applications requiring this switch topology.