Equivalent & Substitute Parts for Renesas 7130SA55J

Part Overview

The Renesas 7130SA55J is an 8Kbit dual-port asynchronous SRAM with parallel interface, housed in a 52-PLCC package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The part operates within a 4.5V to 5.5V supply range with 55 ns access time and is suitable for applications requiring volatile memory with parallel data access.

Substiute Parts

7130SA55J

Renesas Electronics CorporationIn Stock: 21297130SA55J Datasheet

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7130LA20JG

Renesas Electronics CorporationIn Stock: 9327130LA20JG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7130SA55J is determined by strict equivalence across the following parameters:

• Memory capacity (8Kbit) and organization (1K x 8)
• Dual-port asynchronous SRAM architecture
• Parallel interface configuration
• 52-PLCC package footprint and pinout compatibility
• Supply voltage range (4.5V ~ 5.5V)
• Operating temperature range (0°C ~ 70°C)

The 7130LA20JG qualifies as a direct substitute because it maintains identical memory specifications, package geometry, and electrical operating conditions. The primary distinction is improved access time performance (20 ns versus 55 ns), which represents a performance upgrade rather than a functional limitation.

Parameter Comparison

Engineering Selection Recommendations

The 7130LA20JG is the appropriate substitute for the obsolete 7130SA55J based on the following factors:

• Functional equivalence across all memory specifications and electrical parameters
• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance of the substitute addresses regulatory requirements not met by the original part
• Identical package footprint and pinout enable direct board-level replacement without layout modification
• Superior access time (20 ns) provides performance margin beyond the original specification
• Matching MSL rating and operating temperature range maintain environmental compatibility

Frequently Asked Questions (FAQ)

Q: Can the 7130LA20JG be used as a direct replacement for the 7130SA55J?

A: Yes. Both parts share identical memory capacity (8Kbit), organization (1K x 8), dual-port asynchronous architecture, parallel interface, 52-PLCC package footprint, and supply voltage range (4.5V ~ 5.5V). The substitute operates within the same temperature range and maintains equivalent pinout compatibility.

Q: What is the primary difference between these parts?

A: The 7130LA20JG features faster access time (20 ns) and write cycle time (20 ns) compared to the 7130SA55J (55 ns). This represents a performance upgrade. The substitute also carries ROHS3 compliance, whereas the original part is RoHS non-compliant.

Q: Are there any package or mounting considerations?

A: Both parts use identical 52-PLCC (19.13x19.13) surface-mount packages with J-lead configuration. No PCB layout or footprint modifications are required for substitution.

Q: Does the faster access time of the 7130LA20JG affect system compatibility?

A: No. Faster access time is backward compatible with designs specified for 55 ns operation. The substitute will function correctly in any application designed for the original part.

Q: What is the MSL rating and what does it mean for storage?

A: Both parts carry MSL 3 rating with a 168-hour floor life. This indicates the component must be reflowed within 168 hours of exposure to moisture after packaging is opened. Standard moisture-controlled storage practices apply.