AT27C010-45JC Equivalent & Substitute Parts

Part Overview

The AT27C010-45JC is a 1Mbit parallel EPROM (Erasable Programmable Read-Only Memory) manufactured by Microchip Technology in a 32-PLCC package with 45 ns access time. This device is classified as obsolete, which necessitates identification of equivalent substitute components for ongoing system support and new designs. The part operates within the 4.5V to 5.5V supply voltage range and is suitable for applications requiring non-volatile memory storage with parallel interface architecture.

Substiute Parts

AT27C010-45JC

Microchip TechnologyIn Stock: 9880AT27C010-45JC Datasheet

Current PartRFQ

AT27C010-45JU

Microchip TechnologyIn Stock: 1220AT27C010-45JU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT27C010-45JC is determined by strict equivalence across the following critical parameters:

• Memory capacity and organization (1Mbit, 128K x 8 configuration)
• Access time specification (45 ns)
• Supply voltage compatibility (4.5V ~ 5.5V)
• Package and pinout compatibility (32-PLCC with J-Lead)
• Parallel interface architecture
• Non-volatile EPROM technology

The AT27C010-45JU qualifies as a direct substitute based on identical electrical specifications and package configuration. Differences in product status and operating temperature range do not affect functional substitutability for the specified electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The AT27C010-45JU is the qualified substitute for AT27C010-45JC applications. Selection is based on the following factors:

• Electrical parameter equivalence across memory capacity, access time, voltage supply, and interface specifications
• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance of the substitute aligns with current environmental and regulatory requirements
• Extended operating temperature range (-40°C to 85°C) provides broader application flexibility compared to the obsolete part
• Identical package and pinout configuration enables direct board-level replacement without design modification

Frequently Asked Questions (FAQ)

Q: Can AT27C010-45JU be used as a direct replacement for AT27C010-45JC?

A: Yes. Both parts share identical electrical specifications including 1Mbit capacity, 128K x 8 organization, 45 ns access time, 4.5V to 5.5V supply voltage, and 32-PLCC package configuration. The substitute is pin-compatible and functionally equivalent.

Q: What is the difference between the operating temperature ranges?

A: The AT27C010-45JC operates from 0°C to 70°C, while the AT27C010-45JU operates from -40°C to 85°C. The substitute provides an extended temperature range suitable for industrial and automotive applications. For designs operating within 0°C to 70°C, both parts are functionally equivalent.

Q: Does the RoHS compliance difference affect substitutability?

A: No. RoHS compliance status does not affect electrical or functional compatibility. The AT27C010-45JU's ROHS3 compliance is an advantage for new designs and systems subject to environmental regulations.

Q: Are there packaging differences between these parts?

A: Both parts use identical 32-PLCC (J-Lead) surface mount packaging with dimensions of 13.97 x 11.43 mm. No PCB layout or assembly modifications are required for substitution.

Q: Why is the original part listed as obsolete?

A: The AT27C010-45JC is obsolete due to market transition and manufacturing discontinuation by Microchip Technology. The AT27C010-45JU remains in active production and is the recommended source for new procurement.