7140LA25JI8

Overview

The 7140LA25JI8 is an asynchronous dual-port static random-access memory (SRAM) manufactured by Renesas Electronics. It provides a storage capacity of 8 kbit, organized as 1K words by 8 bits. The device features a parallel interface with a maximum access time of 25 ns. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum power supply current of 300 mA. The component is designed for surface-mount installation in a 52-pin PLCC package with J-leads, measuring 19.13 x 19.13 mm. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access by two processors
• Asynchronous operation with fast 25 ns access time
• CMOS technology for low power consumption
• Parallel interface for standard memory bus integration

Applications

• High-speed data buffering in communication systems
• Cache memory implementation in embedded controllers
• Data logging applications requiring rapid write cycles
• Industrial control systems needing reliable volatile storage

Procurement Notes

Verify the specific suffix 'JI8' to confirm the 52-PLCC package and lead form factor, as other suffixes may indicate different packaging or temperature grades. Confirm RoHS compliance status, as older production runs may not meet current environmental directives. Check for End-of-Life notifications or obsolescence notices from Renesas, as this component series has faced discontinuation events. Ensure moisture sensitivity level handling procedures are followed during assembly to prevent package damage.

Selection Notes

Select this component when a dual-port SRAM with 8 kbit capacity and 25 ns speed is required for 5V logic systems. It is suitable for designs needing independent master-slave memory configurations. Consider the 52-PLCC footprint constraints and verify that the 300 mA peak current draw fits the power budget. Compare against single-port alternatives if dual-access is unnecessary, or evaluate lower-speed variants if cost reduction is prioritized over performance.

Part Context

This part belongs to the 7140LA series of high-speed CMOS dual-port SRAMs. It is often paired with the 7130 series 'MASTER' dual-port RAM in complex memory architectures. The LA suffix typically denotes industrial temperature range and specific electrical characteristics distinct from the SA series. Renesas acquired this product line from IDT, maintaining compatibility with original specifications.

Replacement Considerations

IDT7140LA25JI8 is a direct equivalent part number under the former manufacturer branding.