AT27C080-15JC Equivalent & Substitute Parts

Part Overview

The AT27C080-15JC is an 8Mbit parallel EPROM (Erasable Programmable Read-Only Memory) manufactured by Microchip Technology in a 32-PLCC surface mount package. This device is classified as obsolete and is no longer in active production. The part operates with a 150 ns access time and supports a 4.5V to 5.5V supply voltage range across a 0°C to 70°C operating temperature window.

Due to its obsolete status, locating replacement inventory becomes necessary for ongoing system support and maintenance. Substitute parts must maintain electrical compatibility across memory capacity, interface type, and voltage specifications while accommodating potential differences in access time and operating temperature ranges.

Key Parameters

Parameter	Value
Memory Size	8Mbit
Memory Organization	1M x 8
Memory Format	EPROM
Memory Interface	Parallel
Package / Case	32-LCC (J-Lead)
Supplier Device Package	32-PLCC (13.97x11.43)
Mounting Type	Surface Mount
Voltage - Supply	4.5V ~ 5.5V
Access Time	150 ns
Operating Temperature	0°C ~ 70°C
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the AT27C080-15JC is determined by the following mandatory parameters:

Memory Capacity & Organization: Must be 8Mbit with 1M x 8 organization
Memory Type & Format: Must be EPROM with OTP (One-Time Programmable) technology
Interface Type: Must be parallel interface
Package Compatibility: Must use 32-PLCC (13.97x11.43) surface mount package
Voltage Supply Range: Must support 4.5V ~ 5.5V operation
Base Product Number: AT27C080 series

The AT27C080-90JU qualifies as a direct substitute based on these core parameters. While it features improved access time (90 ns versus 150 ns) and an extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), these represent performance enhancements rather than incompatibilities. The substitute maintains identical memory capacity, organization, interface, and physical packaging.

Parameter Comparison

Parameter	AT27C080-15JC (Main Part)	AT27C080-90JU (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Memory Size	8Mbit	8Mbit
Memory Organization	1M x 8	1M x 8
Memory Format	EPROM	EPROM
Memory Interface	Parallel	Parallel
Package / Case	32-LCC (J-Lead)	32-LCC (J-Lead)
Supplier Device Package	32-PLCC (13.97x11.43)	32-PLCC (13.97x11.43)
Mounting Type	Surface Mount	Surface Mount
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V
Access Time	150 ns	90 ns
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)	2 (1 Year)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	3A991B1B1	3A991B1B1
HTSUS	8542.32.0061	8542.32.0061

Engineering Selection Recommendations

The AT27C080-90JU is the qualified substitute for the AT27C080-15JC based on the following factors:

Product Status: The AT27C080-90JU maintains active production status with verified availability (1301 pcs in stock), whereas the main part is obsolete. This ensures long-term supply chain viability for replacement and maintenance applications.

Compliance & Certifications: The substitute achieves ROHS3 compliance, addressing modern regulatory requirements. Both parts maintain identical REACH and ECCN classifications, ensuring consistent export and environmental compliance.

Electrical & Physical Compatibility: The substitute maintains full compatibility across all critical parameters: identical memory capacity, organization, parallel interface, 32-PLCC package footprint, and 4.5V ~ 5.5V supply voltage range. Direct PCB-level substitution is supported without design modifications.

Performance Enhancement: The AT27C080-90JU provides faster access time (90 ns) and extended operating temperature range (-40°C ~ 85°C), representing performance improvements over the original specification without introducing incompatibilities.

Frequently Asked Questions (FAQ)

Q: Can the AT27C080-90JU be used as a direct replacement for the AT27C080-15JC?

A: Yes. Both devices share identical memory capacity (8Mbit), organization (1M x 8), parallel interface, and 32-PLCC package dimensions. The substitute is electrically and mechanically compatible for direct PCB substitution.

Q: What are the key differences between these parts?

A: The AT27C080-90JU features faster access time (90 ns versus 150 ns) and an extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C). The substitute also achieves ROHS3 compliance, whereas the original part is RoHS non-compliant.

Q: Are there any package or pinout differences?

A: No. Both parts use the identical 32-PLCC (13.97x11.43) surface mount package with J-lead configuration. Pinout and footprint compatibility is guaranteed.

Q: Does the faster access time of the substitute create any compatibility issues?

A: No. Faster access time represents a performance improvement and does not introduce incompatibilities. Systems designed for 150 ns access time will operate correctly with 90 ns devices.

Q: What is the moisture sensitivity level for both parts?

A: Both the AT27C080-15JC and AT27C080-90JU carry MSL 2 (1 Year) rating, indicating identical moisture handling and storage requirements.

Q: Are the supply voltage ranges identical?

A: Yes. Both parts operate across the 4.5V ~ 5.5V supply voltage range, ensuring direct compatibility in existing power supply designs.

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