Renesas Electronics 7134LA45P SRAM Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7134LA45P is a 32Kbit dual-port asynchronous SRAM memory IC in 48-DIP packaging. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The part operates within the 4.5V to 5.5V supply range with a 45 ns access time and is designed for parallel memory interface applications requiring volatile storage.

Substiute Parts

7134LA45P

Renesas Electronics CorporationIn Stock: 11547134LA45P Datasheet

Current PartRFQ

7134LA35CB

Renesas Electronics CorporationIn Stock: 10347134LA35CB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7134LA45P is determined by strict equivalence across the following critical parameters:

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

The 7134LA35CB qualifies as a direct substitute based on identical memory specifications, organization, interface type, and package form factor. Differences in access time (35 ns versus 45 ns) and operating temperature range represent performance enhancements rather than compatibility constraints, as faster access times and extended temperature ranges are backward-compatible with applications designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

The 7134LA35CB is the manufacturer-recommended substitute for the obsolete 7134LA45P. Selection of this alternative is justified by:

• Active product status ensuring continued availability and supply chain reliability
• Identical memory capacity, organization, and interface specifications
• Mechanical and electrical compatibility with existing 48-DIP through-hole designs
• Improved performance characteristics (35 ns access time) that maintain backward compatibility
• Extended operating temperature range (-55°C to 125°C) providing broader application flexibility
• Equivalent RoHS and REACH compliance status

No design modifications are required for PCB layouts or electrical interfaces when implementing the 7134LA35CB as a replacement for the 7134LA45P.

Frequently Asked Questions (FAQ)

Q: Can the 7134LA35CB directly replace the 7134LA45P without PCB modifications?

A: Yes. Both parts share identical 48-DIP package dimensions, pinout, supply voltage requirements, and memory organization. No PCB layout changes are necessary.

Q: What is the significance of the 10 ns access time difference between these parts?

A: The 7134LA35CB operates with a 35 ns access time compared to the 7134LA45P's 45 ns. This represents improved performance and is fully backward-compatible with designs specified for the slower original part.

Q: Why does the 7134LA35CB have a wider operating temperature range?

A: The 7134LA35CB operates from -55°C to 125°C, while the 7134LA45P is limited to 0°C to 70°C. This extended range reflects the active product's design for broader industrial and military applications. Applications requiring only the original temperature range remain fully compatible.

Q: Are there any compliance differences between these parts?

A: Both parts maintain identical RoHS non-compliant and REACH unaffected status. No compliance-related substitution barriers exist.

Q: What packaging format is used for the 7134LA35CB?

A: The 7134LA35CB is supplied in tube packaging, while the original 7134LA45P packaging format is not specified. Both use the same 48-DIP (0.600", 15.24mm) physical form factor suitable for through-hole mounting.