AT27C080-90PI EPROM Equivalent & Substitute Parts

Part Overview

The AT27C080-90PI is an 8Mbit parallel EPROM (Erasable Programmable Read-Only Memory) manufactured by Microchip Technology in a 32-DIP package with 90 ns access time. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and component procurement. The part operates across industrial temperature ranges (-40°C to 85°C) and requires a 4.5V to 5.5V supply voltage.

Substiute Parts

AT27C080-90PI

Microchip TechnologyIn Stock: 1561AT27C080-90PI Datasheet

Current PartRFQ

AT27C080-90PU

Microchip TechnologyIn Stock: 1605AT27C080-90PU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT27C080-90PI is determined by strict equivalence across the following critical parameters:

• Memory capacity: 8Mbit
• Memory organization: 1M x 8 bit configuration
• Interface type: Parallel access
• Access time: 90 ns maximum
• Supply voltage range: 4.5V to 5.5V
• Package format: 32-DIP with 0.600" (15.24mm) body width
• Mounting configuration: Through-hole technology
• Operating temperature range: -40°C to 85°C

The AT27C080-90PU meets all substitution criteria. The primary distinction between these parts is packaging format (DIP vs. tube) and product status (obsolete vs. active), with no functional or electrical differences.

Parameter Comparison

Engineering Selection Recommendations

The AT27C080-90PU is the direct functional equivalent for the obsolete AT27C080-90PI. Selection between these parts should be based on regulatory and compliance requirements:

The AT27C080-90PU carries active product status and ROHS3 compliance certification, making it the preferred choice for new designs and systems requiring current regulatory alignment. The AT27C080-90PI, while functionally identical in electrical and mechanical specifications, is obsolete and RoHS non-compliant, limiting its application to legacy system maintenance where component-level compatibility is the sole requirement.

Both parts share identical ECCN (3A991B1B1) and HTSUS (8542.32.0061) classifications, indicating equivalent export control and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Can AT27C080-90PU directly replace AT27C080-90PI in existing circuits?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters: 8Mbit capacity, 1M x 8 organization, 90 ns access time, parallel interface, 4.5V to 5.5V supply, -40°C to 85°C operating range, and 32-DIP through-hole package. Pin-for-pin compatibility is complete.

Q: What is the difference between AT27C080-90PI and AT27C080-90PU?

A: The primary differences are product status (obsolete vs. active) and RoHS compliance (non-compliant vs. ROHS3 compliant). Packaging format differs (DIP vs. tube), but the physical component dimensions and electrical characteristics are identical.

Q: Why is the AT27C080-90PI listed as obsolete?

A: Microchip Technology has discontinued this part number. The AT27C080-90PU remains in active production and serves as the current equivalent for procurement and new applications.

Q: Are there any performance differences between these parts?

A: No. Access time, memory capacity, supply voltage range, operating temperature range, and all electrical specifications are identical. Both parts use EPROM OTP (One-Time Programmable) technology.

Q: What packaging options are available?

A: Both parts use 32-DIP (0.600", 15.24mm) through-hole packages. The AT27C080-90PI is supplied in standard DIP packaging, while the AT27C080-90PU is supplied in tube packaging. The physical component is identical; only the delivery format differs.

Q: Are these parts RoHS compliant?

A: The AT27C080-90PU is ROHS3 compliant. The AT27C080-90PI is RoHS non-compliant. For applications requiring RoHS certification, the AT27C080-90PU must be used.