Equivalent & Substitute Parts for 7027S55PF

Part Overview

The 7027S55PF is a 512Kbit dual-port asynchronous SRAM manufactured by Renesas Electronics Corporation, packaged in a 100-TQFP (14x14mm) surface mount configuration. This memory IC operates with a 55 ns access time and write cycle time, supporting parallel data interfaces with 32K x 16 memory organization. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

7027S55PF

Renesas Electronics CorporationIn Stock: 10207027S55PF Datasheet

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7027L15PFG

Renesas Electronics CorporationIn Stock: 8407027L15PFG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7027S55PF is determined by the following critical parameters:

• Memory capacity and organization (512Kbit, 32K x 16)
• Dual-port asynchronous SRAM technology
• Parallel interface configuration
• Package compatibility (100-TQFP, 14x14mm surface mount)
• Supply voltage range (4.5V ~ 5.5V)
• Operating temperature range (0°C ~ 70°C)
• MSL rating (3, 168 Hours)

The 7027L15PFG meets all substitution criteria. This part maintains identical memory capacity, organization, technology, interface type, package form factor, voltage specifications, temperature range, and moisture sensitivity level. The primary distinction is improved access time and write cycle time performance (15 ns versus 55 ns), making this an upgrade substitute suitable for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

The 7027L15PFG is the qualified substitute for the 7027S55PF based on the following factors:

• Active product status ensures ongoing availability and manufacturing support
• ROHS3 compliance satisfies current regulatory requirements, whereas the original part is non-compliant
• Identical electrical and mechanical specifications guarantee direct pin-for-pin compatibility
• Superior access time and write cycle time (15 ns) provide performance headroom beyond the original 55 ns specification
• Matching package, voltage, temperature, and moisture sensitivity parameters eliminate redesign requirements

Frequently Asked Questions (FAQ)

Q: Can the 7027L15PFG be used as a direct replacement for the 7027S55PF?

A: Yes. Both parts share identical memory capacity (512Kbit), organization (32K x 16), technology (dual-port asynchronous SRAM), interface type (parallel), package configuration (100-TQFP, 14x14mm), supply voltage (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), and MSL rating (3, 168 Hours). Pin-for-pin compatibility is maintained.

Q: What is the primary advantage of the 7027L15PFG over the 7027S55PF?

A: The 7027L15PFG provides faster memory access and write cycle times (15 ns versus 55 ns), enabling improved system performance. Additionally, it carries active product status and ROHS3 compliance, addressing obsolescence and regulatory concerns.

Q: Are there any timing considerations when substituting these parts?

A: The 7027L15PFG's faster access time (15 ns) is a performance upgrade. Systems designed for the 7027S55PF's 55 ns timing will operate correctly with the faster substitute, as timing margins increase. No circuit modifications are required.

Q: Does the package form factor differ between these parts?

A: No. Both parts use identical 100-TQFP (14x14mm) surface mount packaging. PCB footprints and assembly processes remain unchanged.

Q: What is the significance of RoHS compliance differences?

A: The 7027S55PF is RoHS non-compliant, while the 7027L15PFG is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the 7027L15PFG satisfies compliance mandates.