7143LA35PF

Overview

The 7143LA35PF is a dual-port asynchronous static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It provides a total storage capacity of 32K bits, organized as 2K words by 16 bits. The device operates within a supply voltage range of 4.5V to 5.5V and features a maximum access time of 35 nanoseconds. It is housed in a 100-lead Thin Quad Flat Package (TQFP) with dimensions of 14x14 mm. The component supports surface-mount technology and functions reliably across an ambient temperature range of 0°C to 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two distinct processors or systems
• Asynchronous parallel interface for straightforward integration into standard digital logic designs
• CMOS construction ensuring low power consumption during operation

Applications

• High-speed data buffering between microprocessors and peripheral devices
• Cache memory implementation in embedded control systems
• Data logging and temporary storage in industrial automation controllers

Procurement Notes

Verify the specific package variant, as the LA suffix denotes leaded packages while other variants may differ. Confirm RoHS compliance status, as older production runs may not meet current environmental directives. Check for Last Time Buy notifications due to potential end-of-life status. Ensure compatibility with existing board layouts regarding pin assignments and thermal requirements before finalizing procurement decisions.

Selection Notes

Select this component when dual-port functionality is required for concurrent read/write operations without bus contention. The 35ns speed class suits moderate-frequency applications where higher speeds are unnecessary. Consider the 100-TQFP package for its balance of pin count and footprint. Evaluate alternative parts if extended industrial temperature ranges or smaller form factors are mandatory for the target design.

Part Context

This part belongs to the 7143 series of dual-port SRAMs, originally developed by Integrated Device Technology (IDT) before being acquired by Renesas. The series is characterized by its CMOS technology and asynchronous operation. The 7143LA35PF specifically represents the 35ns speed grade within the 32Kbit capacity segment, serving as a legacy solution for established hardware platforms requiring reliable parallel memory interfaces.

Replacement Considerations

Direct functional substitutes include the 7143LA20PFG, which offers faster 20ns access times in the same package. Verify pinout compatibility and electrical specifications before swapping components to ensure system stability.