EPCS4SI8N Equivalent & Substitute Parts

Part Overview

The EPCS4SI8N is a 4Mbit in-system programmable configuration device manufactured by Intel, housed in an 8-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production continuity. The EPCS4SI8N serves as a configuration memory solution for FPGA and programmable logic applications requiring reliable, in-system programming capability.

Substiute Parts

EPCS4SI8N

IntelIn Stock: 105291EPCS4SI8N Datasheet

Current PartRFQ

EPCQ4ASI8N

IntelIn Stock: 24558EPCQ4ASI8N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EPCS4SI8N is determined by strict equivalence across the following critical parameters:

• Memory capacity: 4Mb (no larger or smaller alternatives acceptable)
• Programmable interface: In-system programmable functionality
• Voltage supply compatibility: 2.7V ~ 3.6V operating range
• Package form factor: 8-SOIC surface mount configuration
• Temperature operating range: -40°C ~ 85°C minimum specification
• Moisture sensitivity classification: MSL 3 or better

The EPCQ4ASI8N meets all substitution criteria as an active-status Intel component within the EPCQ-A series, providing direct functional replacement while offering improved product lifecycle status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The EPCQ4ASI8N is the qualified substitute for EPCS4SI8N applications. Selection rationale is based on:

• Identical electrical specifications across all critical operating parameters
• Matching package and pinout configuration enabling direct PCB compatibility
• Active product status ensuring long-term availability and supply chain reliability
• RoHS compliance certification providing regulatory alignment for current manufacturing standards
• Equivalent moisture sensitivity classification maintaining assembly process compatibility

No design modifications or board-level changes are required for substitution.

Frequently Asked Questions (FAQ)

Q: Can EPCQ4ASI8N be used as a direct replacement for EPCS4SI8N?

A: Yes. Both devices share identical memory capacity (4Mb), voltage supply range (2.7V ~ 3.6V), operating temperature range (-40°C ~ 85°C), and 8-SOIC package configuration. No circuit modifications are necessary.

Q: What is the primary advantage of switching to EPCQ4ASI8N?

A: The EPCQ4ASI8N carries active product status, ensuring continued manufacturing and availability. The EPCS4SI8N is obsolete and subject to supply discontinuation. Additionally, EPCQ4ASI8N holds RoHS compliance certification.

Q: Are the pinouts identical between these two parts?

A: Both components use the 8-SOIC package form factor with matching pin assignments for in-system programmable configuration devices. PCB footprints are directly compatible.

Q: Does moisture sensitivity differ between the parts?

A: No. Both devices are classified as MSL 3 (168 Hours), requiring identical handling and storage protocols during assembly and manufacturing.

Q: Can I use a higher memory capacity substitute?

A: No. Substitution is limited to devices with identical 4Mb memory capacity. Larger capacity alternatives would not be functionally equivalent for this application.