Renesas Electronics 7142SA55P SRAM 16Kbit Parallel Memory - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7142SA55P is a 16Kbit dual-port asynchronous SRAM memory IC in 48-DIP packaging with 55 ns access time and parallel interface. This component is classified as obsolete, making equivalent and substitute parts necessary for system maintenance, redesign, and production continuity. The 7132LA100CB serves as the primary manufacturer-recommended substitute, offering the same core memory architecture with extended operating temperature range and active product status.

Substiute Parts

7142SA55P

Renesas Electronics CorporationIn Stock: 10917142SA55P Datasheet

Current PartRFQ

7132LA100CB

Renesas Electronics CorporationIn Stock: 9857132LA100CB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7142SA55P is determined by the following critical parameters:

• Memory capacity and organization (16Kbit, 2K x 8 configuration)
• Dual-port asynchronous SRAM architecture
• Parallel interface compatibility
• 48-DIP package footprint and through-hole mounting
• Supply voltage range (4.5V ~ 5.5V)

The 7132LA100CB qualifies as a direct substitute based on matching memory size, organization, technology, interface type, voltage specification, and physical package dimensions. The primary difference is access time (100 ns versus 55 ns) and operating temperature range extension, which represents a relaxation of performance specifications rather than a constraint on substitution.

Parameter Comparison

Engineering Selection Recommendations

The 7132LA100CB is the manufacturer-recommended substitute for the obsolete 7142SA55P. Selection of this substitute is supported by the following factors:

• Both components are manufactured by Renesas Electronics Corporation, ensuring design consistency and reliability
• Identical memory capacity, organization, and interface specifications guarantee functional compatibility
• Matching supply voltage range and package dimensions enable direct board-level substitution
• The 7132LA100CB maintains active product status, ensuring continued availability and supply chain reliability
• Extended operating temperature range (-55°C ~ 125°C) provides broader environmental compatibility compared to the original part
• Both components share identical RoHS and REACH compliance status

The trade-off of increased access time (100 ns versus 55 ns) and write cycle time must be evaluated against system timing requirements. Applications with timing margins accommodating 100 ns access time will experience no functional impact from this substitution.

Frequently Asked Questions (FAQ)

Q: Can the 7132LA100CB be used as a direct replacement for the 7142SA55P in existing designs?

A: Yes, the 7132LA100CB is a direct substitute from a physical and electrical standpoint. Both components share identical memory capacity (16Kbit), organization (2K x 8), dual-port asynchronous architecture, parallel interface, supply voltage range (4.5V ~ 5.5V), and 48-DIP package dimensions. System timing analysis is required to confirm that the 100 ns access time meets application requirements.

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

A: The main differences are access time (55 ns for 7142SA55P versus 100 ns for 7132LA100CB), write cycle time (55 ns versus 100 ns), operating temperature range (0°C ~ 70°C versus -55°C ~ 125°C), and product status (obsolete versus active). The 7132LA100CB offers extended temperature operation and current availability.

Q: Are there any package or pinout differences?

A: No. Both components use 48-DIP packaging with 0.600" (15.24mm) body width and through-hole mounting. Pinout and footprint compatibility is guaranteed.

Q: What is the impact of the slower access time on system performance?

A: The 100 ns access time of the 7132LA100CB is 45 ns slower than the 7142SA55P. This affects memory read and write cycle timing. Applications must verify that system timing budgets accommodate this slower access time. If the original design operated with minimal timing margins, substitution may require system-level timing analysis.

Q: Is the 7132LA100CB available in the same packaging options?

A: The 7132LA100CB is supplied in tube packaging, while the 7142SA55P packaging format is not specified in the provided data. Both components use identical 48-DIP physical packages suitable for through-hole PCB assembly.

Q: Are there compliance or certification differences?

A: Both components are RoHS non-compliant and REACH unaffected. Compliance status is identical between the two parts.