Equivalent & Substitute Parts for Renesas 7142SA35P

Part Overview

The Renesas 7142SA35P is a 16Kbit dual-port asynchronous SRAM with parallel interface, organized as 2K x 8, packaged in 48-DIP. This component operates at 35 ns access time and write cycle time, with supply voltage range of 4.5V to 5.5V. The part is classified as obsolete, making substitute identification necessary for ongoing system support and new design implementations. Alternative parts must maintain functional equivalence in memory capacity, organization, interface type, and electrical specifications while accommodating packaging and performance variations.

Substiute Parts

7142SA35P

Renesas Electronics CorporationIn Stock: 9047142SA35P Datasheet

Current PartRFQ

7132LA100CB

Renesas Electronics CorporationIn Stock: 9857132LA100CB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 7142SA35P is based on the following critical parameters that must remain constant or compatible:

• Memory capacity and organization (16Kbit, 2K x 8)
• Dual-port asynchronous SRAM technology
• Parallel interface configuration
• Supply voltage compatibility (4.5V ~ 5.5V)
• Through-hole mounting in 48-DIP package form factor
• Functional pin compatibility

The Renesas 7132LA100CB qualifies as a substitute because it maintains identical memory capacity, organization, technology, interface type, package footprint, and voltage supply range. The primary difference is access time and write cycle time (100 ns versus 35 ns), which represents a performance trade-off acceptable in applications where the faster specification is not a critical requirement. The 7132LA100CB is active product status, providing long-term availability advantage over the obsolete 7142SA35P.

Parameter Comparison

Engineering Selection Recommendations

The 7132LA100CB is suitable as a substitute for the 7142SA35P in applications where the extended access time and write cycle time (100 ns) do not violate system timing requirements. The substitute offers the advantage of active product status, ensuring continued availability and supply chain stability compared to the obsolete main part. Both components share identical RoHS non-compliance status and REACH unaffected classification. The 7132LA100CB provides an extended operating temperature range (-55°C to 125°C) compared to the main part (0°C to 70°C), offering broader environmental compatibility. Component selection should be based on specific system timing constraints and temperature operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the 7132LA100CB directly replace the 7142SA35P in existing designs?

A: Direct replacement is possible from a functional and physical standpoint. Both parts share identical memory capacity (16Kbit), organization (2K x 8), dual-port asynchronous SRAM technology, parallel interface, supply voltage range (4.5V ~ 5.5V), and 48-DIP package footprint. System timing analysis is required to confirm that the 100 ns access and write cycle time of the substitute meets application requirements, as the main part specifies 35 ns.

Q: What are the key differences between these parts?

A: The primary differences are access time and write cycle time (35 ns for 7142SA35P versus 100 ns for 7132LA100CB), operating temperature range (0°C ~ 70°C versus -55°C ~ 125°C), and product status (obsolete versus active). The substitute offers superior temperature range coverage and long-term availability.

Q: Are there any packaging considerations for substitution?

A: Both parts use 48-DIP (0.600", 15.24mm) through-hole packaging with identical footprints. The main part uses standard 48-PDIP packaging, while the substitute uses 48-SIDE BRAZED packaging. Both are compatible with standard 48-DIP PCB layouts.

Q: What compliance certifications apply to both parts?

A: Both the 7142SA35P and 7132LA100CB are RoHS non-compliant and REACH unaffected. No compliance advantage exists between the two parts in these classifications.

Q: Is the extended temperature range of the substitute beneficial?

A: The 7132LA100CB operating range of -55°C to 125°C provides broader environmental compatibility compared to the main part's 0°C to 70°C range. This is advantageous for applications requiring extended temperature operation, though it does not affect substitution suitability for standard industrial temperature environments.