Renesas Electronics 7134LA55P SRAM Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7134LA55P is a 32Kbit dual-port asynchronous SRAM memory IC in 48-DIP packaging with 55 ns access time. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. The 7134LA series represents a legacy memory technology still in use across industrial and embedded applications where parallel SRAM interfaces are required.

Substiute Parts

7134LA55P

Renesas Electronics CorporationIn Stock: 7777134LA55P Datasheet

Current PartRFQ

7134LA35CB

Renesas Electronics CorporationIn Stock: 10347134LA35CB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7134LA55P is determined by the following critical parameters:

• Memory capacity (32Kbit) and organization (4K x 8)
• Dual-port asynchronous SRAM technology
• Parallel interface configuration
• 48-DIP package footprint compatibility
• Supply voltage range (4.5V ~ 5.5V)

The 7134LA35CB qualifies as a direct substitute based on matching memory capacity, organization, technology, interface type, and package form factor. Performance characteristics (access time and write cycle time) are improved in the substitute part, making it functionally compatible for applications designed around the 7134LA55P specifications.

Parameter Comparison

Engineering Selection Recommendations

The 7134LA35CB is the qualified substitute for the 7134LA55P based on the following factors:

• Both parts share identical memory capacity, organization, and interface specifications
• The substitute part is currently in active production status, ensuring availability for new procurements and system maintenance
• The 7134LA35CB provides improved access and write cycle times (35 ns versus 55 ns), delivering enhanced performance while maintaining full backward compatibility
• Operating temperature range is expanded in the substitute part (-55°C ~ 125°C versus 0°C ~ 70°C), supporting deployment in wider environmental conditions
• Both parts maintain identical supply voltage requirements and package footprint, enabling direct socket replacement without circuit modification
• The substitute part carries REACH Unaffected status, consistent with the main part

Frequently Asked Questions (FAQ)

Q: Can the 7134LA35CB directly replace the 7134LA55P in existing designs?

A: Yes. Both parts are 32Kbit dual-port asynchronous SRAM devices with identical memory organization (4K x 8), parallel interface, supply voltage range (4.5V ~ 5.5V), and 48-DIP package footprint. The substitute part is pin-compatible and functionally equivalent.

Q: What are the performance differences between these parts?

A: The 7134LA35CB provides faster access and write cycle times (35 ns) compared to the 7134LA55P (55 ns). This represents a performance improvement with no negative impact on system compatibility.

Q: Does the expanded operating temperature range of the 7134LA35CB affect compatibility?

A: No. The substitute part's extended temperature range (-55°C ~ 125°C) is a superset of the main part's range (0°C ~ 70°C). Systems designed for the original temperature specification will operate within the substitute part's qualified range.

Q: Are there packaging differences between these parts?

A: Both parts use 48-DIP packaging with identical 0.600" (15.24mm) body dimensions. The 7134LA35CB is supplied in tube packaging, while the 7134LA55P packaging format was not specified in the available data.

Q: What is the availability status of the 7134LA35CB?

A: The 7134LA35CB is in active production status with current inventory of 930 pieces available. The 7134LA55P is obsolete, making the substitute part the recommended choice for new procurements.