CS82C55A-5 Equivalent & Substitute Parts Reference

Part Overview

The CS82C55A-5 is a 24-channel parallel I/O expander manufactured by Renesas Electronics Corporation, packaged in a 44-PLCC surface mount configuration. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing system support and new designs. The part operates within a 4.5V to 5.5V supply range with open drain output capability, making it suitable for parallel interface applications requiring multiple I/O channels.

Substiute Parts

CS82C55A-5

Renesas Electronics CorporationIn Stock: 1576CS82C55A-5 Datasheet

Current PartRFQ

CS82C55A-5Z

Renesas Electronics CorporationIn Stock: 1229CS82C55A-5Z Datasheet

DirectRFQ

CP82C55A-5Z

Renesas Electronics CorporationIn Stock: 1439CP82C55A-5Z Datasheet

SimilarRFQ

ID82C55A

Renesas Electronics CorporationIn Stock: 1972ID82C55A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the CS82C55A-5 is determined by the following critical parameters: number of I/O channels (24), interface type (parallel), output type (open drain), output current capability (2.5mA), supply voltage range (4.5V ~ 5.5V), and functional equivalence as a parallel I/O expander. Substitute parts must maintain these electrical specifications to ensure functional compatibility.

The substitute parts are grouped into two categories:

Direct Equivalent (Packaging Variant): CS82C55A-5Z maintains identical electrical specifications and surface mount packaging but differs in product status (active vs. obsolete) and RoHS compliance status.

Functional Equivalents (Alternative Packaging): CP82C55A-5Z and ID82C55A provide the same 24-channel parallel I/O functionality and electrical performance but utilize through-hole mounting packages (40-DIP and 40-CDIP respectively) instead of surface mount. These alternatives require different PCB layout and assembly processes.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same PCB Layout): CS82C55A-5Z is the appropriate selection when PCB layout and assembly process remain unchanged. This part maintains identical surface mount 44-PLCC packaging and electrical specifications. The transition from obsolete to active product status and ROHS3 compliance provides improved supply chain availability and regulatory alignment.

For New Designs or PCB Redesign: CP82C55A-5Z or ID82C55A are suitable when PCB layout modifications are acceptable. Both parts provide active product status and ROHS3 compliance. CP82C55A-5Z (40-DIP) offers unlimited moisture sensitivity rating (MSL 1) and maintains the 0°C to 70°C operating temperature range. ID82C55A (40-CDIP) extends the operating temperature range to -40°C to 85°C, providing broader environmental capability while also offering unlimited MSL rating.

Selection between through-hole alternatives depends on assembly process capability and environmental operating requirements. The extended temperature range of ID82C55A supports applications requiring operation beyond standard industrial temperature limits.

Frequently Asked Questions (FAQ)

Q: Can CS82C55A-5Z be used as a direct drop-in replacement for CS82C55A-5?

A: Yes. CS82C55A-5Z maintains identical electrical specifications (24 I/O channels, 2.5mA output current, 4.5V-5.5V supply, open drain output) and surface mount 44-PLCC packaging. The primary differences are product status (active vs. obsolete) and RoHS compliance, which do not affect electrical compatibility.

Q: What are the implications of switching from CS82C55A-5 to CP82C55A-5Z or ID82C55A?

A: These alternatives require PCB redesign due to different mounting types (through-hole vs. surface mount) and package footprints (40-DIP or 40-CDIP vs. 44-PLCC). Electrical functionality remains equivalent. Both alternatives provide improved supply chain status (active products) and ROHS3 compliance. ID82C55A additionally supports extended operating temperature range (-40°C to 85°C).

Q: Why do CP82C55A-5Z and ID82C55A have different MSL ratings?

A: Through-hole packages (40-DIP and 40-CDIP) have MSL rating of 1 (unlimited moisture sensitivity), while surface mount packages (44-PLCC) have MSL rating of 3 (168 hours). This reflects the different moisture absorption characteristics and assembly process requirements of through-hole versus surface mount technologies.

Q: Are all substitute parts manufactured by Renesas Electronics Corporation?

A: Yes. All substitute parts (CS82C55A-5Z, CP82C55A-5Z, and ID82C55A) are manufactured by Renesas Electronics Corporation, ensuring consistent design and quality standards.

Q: Which substitute part should be selected for applications requiring extended temperature operation?

A: ID82C55A supports operating temperatures from -40°C to 85°C, compared to 0°C to 70°C for CS82C55A-5, CS82C55A-5Z, and CP82C55A-5Z. Select ID82C55A when extended temperature range is required.