7142SA35P

Overview

The Renesas Electronics Corporation 7142SA35P is an asynchronous dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 16 kilobits, organized as 2K words by 8 bits. The device features a parallel interface with a maximum access time and write cycle time of 35 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface mount installation in a 48-pin small outline package (PDIP). The component is designed for industrial temperature ranges from 0°C to 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access by two processors
• Asynchronous operation without requiring a system clock signal
• Parallel data interface supporting standard 8-bit word width

Applications

• High-speed data buffering between asynchronous logic blocks
• Cache memory implementation in embedded systems
• FIFO buffer applications in communication interfaces

Procurement Notes

Verify the specific package variant, as the 7142SA series includes PLCC, TQFP, and PDIP options. Confirm RoHS compliance status, as older revisions may not meet current environmental standards. Check for end-of-life notices or obsolescence warnings before finalizing procurement plans. Ensure the selected pinout matches the target PCB footprint design requirements.

Selection Notes

Select this component when independent read/write ports are required for concurrent processor access. Choose based on the 35ns speed grade if higher performance variants are unnecessary. Verify that the 48-pin DIP package fits the assembly constraints. Consider power consumption limits relative to the 5V supply specification during system design.

Part Context

This part belongs to the Renesas 7142SA family of dual-port SRAMs. The family offers various access speeds and packaging options to suit different system requirements. These devices are commonly used in legacy industrial and telecommunications equipment where high-speed independent memory access is critical for system performance.

Replacement Considerations

Check for direct pin-compatible upgrades within the same manufacturer's portfolio. Verify that substitute parts maintain the same dual-port asynchronous functionality. Ensure replacement packages match the existing board layout dimensions.