Equivalent & Substitute Parts for 7132LA55L48B

Part Overview

The 7132LA55L48B is a 16Kbit dual-port asynchronous SRAM manufactured by Renesas Electronics Corporation. This parallel interface memory IC operates at 55 ns access time and is housed in a 48-LCC package. The product is classified as obsolete, making identification of compatible substitute parts essential for system redesign, legacy system maintenance, and component procurement planning. The obsolete status necessitates evaluation of active alternative components that maintain functional and electrical compatibility.

Substiute Parts

7132LA55L48B

Renesas Electronics CorporationIn Stock: 10237132LA55L48B Datasheet

Current PartRFQ

7132LA20JG

Renesas Electronics CorporationIn Stock: 10677132LA20JG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7132LA55L48B is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Memory capacity: 16Kbit (2K x 8 organization)
• Memory technology: Dual-port asynchronous SRAM
• Interface type: Parallel
• Supply voltage range: 4.5V ~ 5.5V (must encompass or match the original range)
• Manufacturer: Renesas Electronics Corporation (same product family)

Performance Considerations:

• Access time and write cycle time must be equal to or faster than the original 55 ns specification
• Operating temperature range must support the application requirements

Package and Compliance Factors:

• Physical package dimensions and mounting type affect PCB compatibility
• RoHS and REACH compliance status may be required depending on application and regulatory jurisdiction

The substitute part 7132LA20JG meets the mandatory compatibility criteria while offering improved performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

Functional Compatibility: The 7132LA20JG is functionally compatible with the 7132LA55L48B. Both devices share identical memory capacity, organization, and interface specifications. The substitute part operates from the same supply voltage range and maintains dual-port asynchronous SRAM architecture.

Performance Advantage: The 7132LA20JG provides superior performance with 20 ns access and write cycle times compared to the original 55 ns specification. This performance improvement is backward-compatible with designs requiring the original timing or slower operation.

Product Status Consideration: The 7132LA20JG holds active product status with confirmed inventory availability, whereas the 7132LA55L48B is obsolete. Selection of the active substitute ensures long-term component availability and supply chain continuity.

Compliance Status: The 7132LA20JG is ROHS3 compliant and carries EAR99 ECCN classification, compared to the non-compliant status of the original part. This compliance improvement may be required for new designs or applications subject to regulatory requirements.

Temperature Range Limitation: The substitute part operates over 0°C ~ 70°C, which is narrower than the original -55°C ~ 125°C range. Applications requiring extended temperature operation below 0°C or above 70°C must evaluate this constraint against system requirements.

Package Consideration: The 7132LA20JG uses a 52-PLCC package (19.13x19.13) compared to the 48-LCC package (14.22x14.22) of the original part. PCB layout modifications are required to accommodate the larger package footprint and pin configuration differences.

Frequently Asked Questions (FAQ)

Q: Can the 7132LA20JG directly replace the 7132LA55L48B without design changes?

A: Functional substitution is possible, but physical PCB layout changes are required. The 7132LA20JG uses a 52-PLCC package versus the 48-LCC package of the original part, necessitating footprint redesign. Pin-to-pin compatibility must be verified against the specific pinout documentation for both devices.

Q: What are the key differences between these two parts?

A: The primary differences are access time (20 ns versus 55 ns), operating temperature range (0°C ~ 70°C versus -55°C ~ 125°C), package type (52-PLCC versus 48-LCC), and product status (active versus obsolete). The 7132LA20JG also offers improved RoHS compliance.

Q: Is the faster access time of the 7132LA20JG compatible with designs using the 7132LA55L48B?

A: Yes. The 20 ns access time of the substitute part is faster than the original 55 ns specification. Designs engineered for 55 ns operation will function correctly with the faster substitute part, as timing requirements are met or exceeded.

Q: What should be considered if the application requires the extended temperature range of the original part?

A: The 7132LA20JG operates only to 70°C maximum, which may be insufficient for applications requiring the original -55°C ~ 125°C range. In such cases, alternative components within the Renesas 7132LA family or other manufacturers' equivalent parts must be evaluated to meet the extended temperature requirement.

Q: Are there other substitute options available?

A: The 7132LA20JG is the primary manufacturer-recommended substitute. Additional alternatives within the Renesas product family include 71321LA25JGI, 71321LA20JG, and 7142LA20JG, which should be evaluated based on specific application requirements and package constraints.

Q: What is the impact of the package size difference on system design?

A: The 52-PLCC package is larger than the 48-LCC package. PCB designers must verify that the increased footprint (19.13x19.13 mm versus 14.22x14.22 mm) can be accommodated within the available board space and that routing to surrounding components remains feasible.