Equivalent & Substitute Parts for AT27C4096-55PC

Part Overview

The AT27C4096-55PC is a non-volatile memory IC categorized under EPROM (OTP) technology, with a 4Mbit capacity and parallel interface, housed in a 40-DIP (0.600", 15.24mm) package. This device is currently listed as obsolete. Identification and selection of equivalent or substitute parts is necessary for applications requiring continued product support, maintenance, or production, as the main part is no longer active in distribution channels.

Substiute Parts

AT27C4096-55PC

Microchip TechnologyIn Stock: 1045AT27C4096-55PC Datasheet

Current PartRFQ

AT27C4096-90PU

Microchip TechnologyIn Stock: 1800AT27C4096-90PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AT27C4096-55PC is limited strictly to parts that match the following key parameters: manufacturer, memory type, memory format, technology, memory size, memory organization, memory interface, voltage supply range, mounting type, package size, and supplier device package. Only parts meeting these criteria are considered functionally and mechanically compatible substitutes.

Parameter Comparison

Engineering Selection Recommendations

Based strictly on product status, RoHS compliance, and provided certification information, the AT27C4096-90PU is suitable for substitution for the AT27C4096-55PC. The substitute part is listed as active and ROHS3 compliant, aligned with current environmental standards, while the original part is obsolete and RoHS non-compliant.

Frequently Asked Questions (FAQ)

Q1: What determines if AT27C4096-90PU is a compatible substitute for AT27C4096-55PC?
A: Compatibility is established by matching key parameters: manufacturer, memory type, memory format, technology, memory size, memory organization, memory interface, voltage supply, mounting type, package, and device package.

Q2: Are there differences in access time between the original and substitute part?
A: Yes. AT27C4096-55PC features a 55 ns access time, while AT27C4096-90PU has a 90 ns access time.

Q3: Does the substitute part meet current RoHS requirements?
A: AT27C4096-90PU is ROHS3 compliant; AT27C4096-55PC is RoHS non-compliant.

Q4: Do the main and substitute part offer identical package and mounting configurations?
A: Both parts are housed in a 40-DIP (0.600", 15.24mm) package and support through hole mounting.

Q5: Can the substitute part be used under a wider range of operating temperatures?
A: AT27C4096-90PU supports -40°C ~ 85°C, whereas AT27C4096-55PC supports 0°C ~ 70°C.

Q6: Is there any difference in memory size or organization?
A: No. Both parts offer 4Mbit memory and are organized as 256K x 16.

Q7: Are additional programming or verification features specified?
A: Only the substitute part, AT27C4096-90PU, lists "DiGi-Electronics Programmable: Verified" in the provided parameters.