Equivalent & Substitute Parts for 7142LA55CB

Part Overview

The 7142LA55CB is a 16Kbit dual-port asynchronous SRAM manufactured by Renesas Electronics Corporation, designed for parallel memory applications requiring 55 ns access time. This component features a 48-DIP through-hole package with 2K x 8 memory organization and operates across the industrial temperature range of -55°C to 125°C.

The 7142LA55CB is classified as obsolete. Locating equivalent or substitute components is necessary to support legacy system maintenance, repair, and continued operation where original stock is depleted or unavailable.

Substiute Parts

7142LA55CB

Renesas Electronics CorporationIn Stock: 11197142LA55CB Datasheet

Current PartRFQ

7132LA100CB

Renesas Electronics CorporationIn Stock: 9857132LA100CB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7142LA55CB is determined by the following critical parameters that must remain constant or compatible:

• Memory capacity (16Kbit) and organization (2K x 8)
• Dual-port asynchronous SRAM technology
• Parallel memory interface
• Supply voltage range (4.5V to 5.5V)
• Operating temperature range (-55°C to 125°C)
• Package form factor (48-DIP through-hole)

The 7132LA100CB qualifies as a substitute based on matching all core electrical and mechanical parameters. The primary difference is access time: the 7132LA100CB operates at 100 ns compared to the original 55 ns specification. This represents a slower access time, which may be acceptable in applications where timing margins permit operation at reduced speed.

Parameter Comparison

Engineering Selection Recommendations

The 7132LA100CB is available as an active product from Renesas Electronics Corporation, whereas the 7142LA55CB is obsolete. Both components share identical compliance classifications (RoHS non-compliant, REACH Unaffected) and regulatory designations (ECCN 3A001A2C, HTSUS 8542.32.0041).

Selection of the 7132LA100CB as a substitute requires confirmation that the system design accommodates the 100 ns access time specification. Applications with timing-critical paths that depend on 55 ns performance may not function correctly with the slower substitute. Systems with adequate timing margins or those not dependent on the original speed specification can transition to the 7132LA100CB without modification.

Frequently Asked Questions (FAQ)

Q: Can the 7132LA100CB directly replace the 7142LA55CB in my circuit?

A: Physical and electrical compatibility is confirmed. Both components use the 48-DIP package, operate at 4.5V to 5.5V, and support the same memory organization and interface. The primary consideration is timing: the 7132LA100CB operates at 100 ns access time versus 55 ns for the original. Direct replacement is possible only if your system design does not require the faster 55 ns specification.

Q: What is the difference between these two parts?

A: The 7142LA55CB and 7132LA100CB are both 16Kbit dual-port asynchronous SRAM devices from Renesas with identical memory capacity, organization, and package. The difference is access time: 55 ns versus 100 ns. The 7132LA100CB is currently in active production, while the 7142LA55CB is obsolete.

Q: Are there any compliance or regulatory differences?

A: Both parts carry identical compliance status: RoHS non-compliant and REACH Unaffected. No regulatory advantage exists between the two components.

Q: What should I verify before using the 7132LA100CB as a substitute?

A: Confirm that your circuit design accommodates 100 ns memory access time. Review timing diagrams and setup/hold time requirements in your system. If the original design margin allows for the slower access time, substitution is viable. If timing is critical and dependent on 55 ns performance, the substitute may not be suitable.