Equivalent & Substitute Parts for Renesas 7142SA55C

Part Overview

The Renesas 7142SA55C is a 16Kbit dual-port asynchronous SRAM with parallel interface, organized as 2K x 8, featuring 55 ns access time and 48-DIP through-hole packaging. This component is classified as obsolete, making substitute parts necessary for new designs and production continuity. The part operates within a 4.5V to 5.5V supply range and is rated for 0°C to 70°C operating temperature.

Substiute Parts

7142SA55C

Renesas Electronics CorporationIn Stock: 8197142SA55C Datasheet

Current PartRFQ

7132LA100CB

Renesas Electronics CorporationIn Stock: 9857132LA100CB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7142SA55C is determined by the following critical parameters that must remain compatible:

• Memory capacity and organization (16Kbit, 2K x 8)
• Dual-port asynchronous SRAM technology
• Parallel interface configuration
• 48-DIP through-hole package with 0.600" (15.24mm) pitch
• Supply voltage range (4.5V ~ 5.5V)
• Access time equal to or faster than 55 ns

The Renesas 7132LA100CB qualifies as a substitute based on matching memory capacity, organization, technology, interface type, and package specification. The substitute part maintains electrical compatibility through identical supply voltage range and package footprint.

Parameter Comparison

Engineering Selection Recommendations

The 7132LA100CB is available as an active product from Renesas Electronics Corporation, providing production continuity for applications currently using the obsolete 7142SA55C. Both parts share identical memory capacity, organization, interface type, and package specification, ensuring mechanical and electrical compatibility.

The substitute part operates across an extended temperature range (-55°C to 125°C) compared to the main part (0°C to 70°C), providing broader environmental coverage. Access time and write cycle time are specified at 100 ns for the substitute versus 55 ns for the main part; applications with timing-critical requirements must verify that the slower access time remains acceptable within system constraints.

Both parts maintain RoHS non-compliant status and identical supply voltage specifications (4.5V ~ 5.5V), with matching HTSUS classification (8542.32.0041).

Frequently Asked Questions (FAQ)

Q: Can the 7132LA100CB directly replace the 7142SA55C in existing designs?

A: Mechanical and electrical compatibility is confirmed through identical package type (48-DIP), supply voltage range (4.5V ~ 5.5V), memory capacity (16Kbit), organization (2K x 8), and interface configuration (parallel dual-port asynchronous). The substitute part's 100 ns access time must be evaluated against system timing requirements, as it is slower than the original 55 ns specification.

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

A: The main differences are product status (7142SA55C is obsolete; 7132LA100CB is active) and timing specifications (55 ns versus 100 ns access and write cycle times). The substitute part also provides extended operating temperature range (-55°C to 125°C versus 0°C to 70°C).

Q: Are there any compliance or certification differences?

A: Both parts share identical RoHS status (non-compliant) and REACH status (unaffected). HTSUS classification is identical (8542.32.0041). ECCN differs between parts but does not affect substitution eligibility for standard applications.

Q: Is the 48-DIP package footprint identical between both parts?

A: Yes. Both parts use 48-DIP (0.600", 15.24mm) through-hole packaging with identical pin pitch and mechanical dimensions, ensuring direct PCB compatibility.