HCS512/P Code Hopping Decoder Equivalent & Substitute Parts

Part Overview

The HCS512/P is a Code Hopping Decoder integrated circuit manufactured by Microchip Technology, designed for secure remote access and keyless entry applications. This 18-pin DIP package device implements KEELOQ® technology for encrypted signal decoding in automotive and access control systems. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and environmental regulatory adherence. Identifying equivalent substitute parts is necessary to maintain supply chain flexibility, optimize inventory management, and ensure design continuity when primary part availability is constrained.

Substiute Parts

HCS512/P

Microchip TechnologyIn Stock: 2226HCS512/P Datasheet

Current PartRFQ

HCS512-I/P

Microchip TechnologyIn Stock: 1341HCS512-I/P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCS512/P are identified based on strict electrical and mechanical parameter alignment. The substitution logic is governed by the following criteria:

Primary Substitution Criteria:

• Identical base product number (HCS512) ensuring core functional equivalence
• Matching package type (18-DIP with 0.300" pitch) for PCB footprint compatibility
• Identical mounting type (Through Hole) for assembly process compatibility
• Equivalent or superior RoHS compliance status (ROHS3 Compliant)
• Matching or superior MSL rating (MSL 1 - Unlimited)
• Active product status from the same manufacturer (Microchip Technology)
• Identical series designation (KEELOQ®) for cryptographic algorithm compatibility

Packaging Variation Allowance: Substitute parts may differ in supplier packaging format (Tube vs. standard packaging) without affecting functional or electrical equivalence, as packaging is a supply chain variable rather than a performance parameter.

No electrical parameter deviations, pin configuration changes, or functional modifications are permitted in substitute relationships.

Parameter Comparison

Engineering Selection Recommendations

HCS512-I/P as Direct Substitute:

The HCS512-I/P is a direct functional and electrical equivalent to the HCS512/P. Both parts share identical electrical specifications, package geometry, mounting methodology, and compliance certifications. The suffix variation (-I/P vs. /P) reflects internal Microchip Technology product line designation and does not indicate functional differences.

Selection Basis:

• Both parts maintain Active product status, ensuring continued manufacturer support and long-term availability
• Identical ROHS3 compliance and REACH Unaffected status satisfy environmental regulatory requirements
• Matching MSL 1 (Unlimited) rating eliminates moisture sensitivity constraints in storage and handling
• Identical ECCN (EAR99) and HTSUS classifications ensure export and tariff compliance equivalence
• Pin-for-pin compatibility and identical package footprint enable direct PCB substitution without design modification

Inventory Consideration: HCS512/P inventory: 2120 Pcs; HCS512-I/P inventory: 1310 Pcs. Both parts are available in sufficient quantity for production requirements.

Frequently Asked Questions (FAQ)

Q: Can HCS512-I/P be used as a direct replacement for HCS512/P on existing PCBs?

A: Yes. The HCS512-I/P is pin-for-pin compatible with identical electrical characteristics, package dimensions (18-DIP, 0.300" pitch), and functional specifications. No PCB redesign or component repositioning is required.

Q: Are there any differences in KEELOQ® encryption algorithm implementation between these parts?

A: No. Both parts implement identical KEELOQ® series technology. The cryptographic algorithm, key handling, and decoding functionality are equivalent.

Q: What is the significance of the suffix variation (-I/P vs. /P)?

A: The suffix designates internal Microchip Technology product line classification and packaging format. The -I designation indicates a specific product variant within the HCS512 family. This does not affect electrical performance or functional compatibility.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both HCS512/P and HCS512-I/P are ROHS3 Compliant, REACH Unaffected, and classified under identical ECCN (EAR99) and HTSUS (8542.39.0001) codes. Regulatory and environmental compliance is equivalent.

Q: Are there moisture sensitivity or storage condition differences?

A: No. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints. Storage and handling requirements are identical.

Q: Can these parts be mixed in the same production batch?

A: Yes. Functional and electrical equivalence permits interchangeable use within the same design and production environment. No performance degradation or compatibility issues will result from substitution.

Q: What applications are supported by both parts?

A: Both HCS512/P and HCS512-I/P are designed for Remote Secure Access and Keyless Entry applications, including automotive access control systems and encrypted signal decoding in security-critical environments.