Renesas Electronics 7024S55G SRAM 64Kbit Parallel Memory - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7024S55G is a 64Kbit dual-port asynchronous SRAM memory IC in 84-PGA packaging with 55 ns access time. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The 7024S55G serves applications requiring parallel interface volatile memory with standard 5V supply operation and industrial temperature range compatibility.

Substiute Parts

7024S55G

Renesas Electronics CorporationIn Stock: 11797024S55G Datasheet

Current PartRFQ

7024L20G

Renesas Electronics CorporationIn Stock: 15007024L20G Datasheet

MFR RecommendedRFQ

7024S35G

Renesas Electronics CorporationIn Stock: 10527024S35G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 7024S55G is determined by strict equivalence in the following critical parameters:

• Memory capacity: 64Kbit
• Memory organization: 4K x 16
• Memory technology: Dual-port asynchronous SRAM
• Parallel interface architecture
• Package type: 84-BPGA (27.94x27.94)
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: 0°C ~ 70°C
• Through-hole mounting compatibility

The substitute parts 7024L20G and 7024S35G meet all these core requirements. The primary difference between these parts and the main part is access time and write cycle time performance. The 7024L20G provides faster 20 ns performance, while the 7024S35G provides intermediate 35 ns performance. Both substitute parts are currently in active product status, unlike the obsolete 7024S55G.

Parameter Comparison

Engineering Selection Recommendations

The 7024S55G is obsolete and no longer in active production. Both substitute parts—7024S35G and 7024L20G—are currently active products from Renesas Electronics Corporation and maintain full electrical and mechanical compatibility with the original part.

Selection between the two substitutes depends on system timing requirements:

• The 7024S35G provides 35 ns access and write cycle time, offering a performance improvement over the original 55 ns specification while maintaining cost efficiency.
• The 7024L20G provides 20 ns access and write cycle time, delivering the fastest performance option for timing-critical applications.

Both substitutes share identical supply voltage ranges, operating temperature specifications, package dimensions, and mounting characteristics. All three parts carry identical RoHS non-compliance and REACH unaffected status. Moisture sensitivity level remains constant at MSL 1 (Unlimited) across all variants.

Frequently Asked Questions (FAQ)

Q: Can the 7024S35G or 7024L20G be used as direct replacements for the 7024S55G?

A: Yes. Both substitute parts are electrically and mechanically compatible. They share identical memory capacity (64Kbit), organization (4K x 16), dual-port asynchronous architecture, parallel interface, supply voltage range (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), and 84-BPGA package dimensions (27.94x27.94). The substitutes offer equal or superior access time performance.

Q: What is the primary difference between the substitute parts?

A: The 7024S35G and 7024L20G differ only in access time and write cycle time specifications. The 7024S35G operates at 35 ns, while the 7024L20G operates at 20 ns. Both are faster than the original 7024S55G at 55 ns. All other electrical and mechanical parameters are identical.

Q: Are there any compliance or certification differences between these parts?

A: No. All three parts carry identical RoHS non-compliance status, REACH unaffected designation, and MSL 1 (Unlimited) moisture sensitivity level. Compliance profiles are equivalent across all variants.

Q: Will the faster substitute parts affect circuit board layout or design?

A: No. The 7024S35G and 7024L20G maintain identical package dimensions (84-BPGA, 27.94x27.94), through-hole mounting type, and pin configuration as the 7024S55G. No PCB redesign is required for substitution.

Q: Which substitute should be selected for new designs?

A: For new designs, either substitute is acceptable based on timing requirements. The 7024L20G is recommended when system timing margins are critical or when maximum performance is desired. The 7024S35G is suitable for applications where the original 55 ns specification is adequate, as it provides cost-effective performance improvement.