Renesas Electronics 7035L20PF SRAM Memory IC - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7035L20PF is a dual-port asynchronous SRAM memory IC with 144Kbit capacity organized as 8K x 18 bits. This component operates in parallel interface mode with a 20 ns access time and write cycle time, housed in a 100-TQFP surface mount package. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations. The availability of active-status alternatives with improved performance characteristics provides viable options for component replacement and procurement continuity.

Substiute Parts

7035L20PF

Renesas Electronics CorporationIn Stock: 8527035L20PF Datasheet

Current PartRFQ

7035L15PFG

Renesas Electronics CorporationIn Stock: 10497035L15PFG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7035L20PF is determined by strict adherence to the following parameters:

Critical Compatibility Parameters:

• Memory capacity: 144Kbit (8K x 18 organization)
• Memory technology: Dual-port asynchronous SRAM
• Interface type: Parallel
• Package: 100-TQFP (14x14)
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: 0°C ~ 70°C
• Mounting type: Surface mount

Performance Parameter Consideration:

• Access time and write cycle time must be equal to or faster than the original specification (20 ns or less)

The 7035L15PFG meets all critical compatibility parameters and provides improved performance with a 15 ns access time and write cycle time, making it a direct functional substitute.

Parameter Comparison

Engineering Selection Recommendations

The 7035L15PFG is the qualified substitute for the obsolete 7035L20PF based on the following factors:

Product Status: The 7035L20PF is classified as obsolete, while the 7035L15PFG maintains active product status, ensuring ongoing availability and manufacturer support.

Compliance Status: The 7035L15PFG is ROHS3 compliant, whereas the original part is RoHS non-compliant. Both parts maintain REACH unaffected status and EAR99 export classification.

Performance Advantage: The 7035L15PFG provides faster memory access and write cycle times (15 ns versus 20 ns), delivering improved system performance without requiring design modifications.

Electrical and Mechanical Compatibility: All critical parameters including memory capacity, organization, interface type, package configuration, voltage supply range, and operating temperature range are identical between the two parts, ensuring direct functional substitution.

Frequently Asked Questions (FAQ)

Q: Can the 7035L15PFG directly replace the 7035L20PF without PCB modifications?

A: Yes. Both parts share identical package specifications (100-TQFP 14x14), mounting type (surface mount), pin configurations, electrical interface (parallel), and voltage requirements (4.5V ~ 5.5V). No PCB layout changes are required.

Q: What is the primary difference between these two parts?

A: The 7035L15PFG provides faster memory access and write cycle times at 15 ns compared to the 7035L20PF at 20 ns. Both parts maintain identical memory capacity (144Kbit), organization (8K x 18), and all other functional parameters.

Q: Why is the 7035L20PF classified as obsolete?

A: The 7035L20PF has reached end-of-life status. The 7035L15PFG represents the active equivalent offering improved performance specifications and ongoing manufacturer support.

Q: Are there any compliance differences between the original and substitute part?

A: The 7035L15PFG is ROHS3 compliant, while the 7035L20PF is RoHS non-compliant. Both parts maintain identical REACH and export classification status (REACH unaffected, EAR99).

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

A: Both the 7035L20PF and 7035L15PFG carry a Moisture Sensitivity Level (MSL) rating of 3 with a 168-hour floor life specification.

Q: Can the 7035L15PFG be used in legacy systems designed for the 7035L20PF?

A: Yes. The faster access time of the 7035L15PFG (15 ns) is backward compatible with systems specified for 20 ns operation. The part will function correctly in all applications originally designed for the 7035L20PF.