7140LA35J8

Overview

The Renesas Electronics Corporation 7140LA35J8 is an asynchronous dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 8 kilobits, organized as 1K 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 52-pin Plastic Leadless Chip Carrier (PLCC) package measuring 19.13mm x 19.13mm. The component is rated for commercial operating temperatures between 0°C and 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous read/write operations from two distinct ports.

Applications

• Data buffering in high-speed digital systems
• Cache memory implementation in embedded processors
• FIFO buffer applications requiring dual access

Procurement Notes

Verify the current lifecycle status, as this component may be discontinued or subject to last-time-buy restrictions. Confirm that the 52-PLCC package dimensions align with existing PCB footprints. Ensure compatibility with 5V logic levels and check for RoHS compliance requirements relative to specific manufacturing standards.

Selection Notes

Select this component when a small-capacity, high-speed dual-port memory solution is required for parallel data handling. The 35ns speed suits moderate-frequency asynchronous interfaces. Consider the PLCC package constraints for board space and verify that the 8Kb capacity meets system data storage needs without excessive cost overhead.

Part Context

This part belongs to the IDT/Renesas 7140LA series of asynchronous dual-port SRAMs. These devices are designed for applications requiring independent port access. The 7140LA35J8 specifically denotes the 35ns speed grade and J8 suffix indicating the 52-PLCC plastic package variant within this product family.

Replacement Considerations

Check for direct pin-compatible replacements within the same 7140LA series with different speed grades or package options. Verify functional equivalence if substituting with other dual-port SRAMs, ensuring voltage and timing parameters match the original design requirements.