7140LA55J8

Overview

The Renesas Electronics Corporation 7140LA55J8 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 of 55 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and is housed in a 52-lead Plastic Leadless Chip Carrier (PLCC) package measuring 19.13mm x 19.13mm. The component supports surface-mount installation and is rated for commercial operating temperatures from 0°C to +70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous read/write operations on separate ports.

Applications

• High-speed data buffering in communication systems
• Cache memory implementation in embedded processors
• Data logging applications requiring fast write cycles

Procurement Notes

Verify the exact suffix designation against official manufacturer documentation, as standard listings often cite the 7140LA55J variant. Confirm RoHS compliance status, as older PLCC packages may not meet current environmental standards. Check for End-of-Life notices or Product Change Notifications that may affect long-term availability and sourcing strategies.

Selection Notes

Select this component when a compact 8Kb dual-port solution is required for asynchronous data handling. Ensure the design accommodates the 52-PLCC footprint and 5V logic levels. Consider thermal dissipation requirements given the power consumption characteristics typical of CMOS SRAM devices in this speed class.

Part Context

This part belongs to the IDT/Renesas 7140LA series of high-speed dual-port SRAMs. These devices are designed for applications requiring non-blocking data transfer between two independent buses. The LA suffix typically denotes the specific package type and temperature range configuration within the broader product family.

Replacement Considerations

Consult official substitution guides for equivalent parts such as the IDT7140SA55J or other 8Kb dual-port SRAMs with compatible pinouts and electrical specifications.