7142LA25J8

Overview

The Renesas Electronics Corporation 7142LA25J8 is a dual-port static random-access memory (SRAM) integrated circuit. It features an organization of 2K x 8 bits, providing a total storage capacity of 16 kilobits. The device operates with a maximum access time of 25 nanoseconds and supports asynchronous parallel interface communication. It is designed for a core voltage supply range of 4.5V to 5.5V. The component is housed in a 52-pin Plastic Leadless Chip Carrier (PLCC) package with J-leads, measuring approximately 19.0mm by 19.0mm. It functions as a slave I/O device with busy signal capabilities.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two distinct processors or systems
• Asynchronous operation allowing flexible timing integration without external clock synchronization
• Integrated busy signal management to coordinate data access between master and slave ports
• Standard TTL-compatible input/output levels for straightforward logic interfacing

Applications

• High-speed data buffering in telecommunications equipment
• Cache memory implementation in industrial control systems
• Data logging applications requiring rapid write and read cycles
• Embedded system memory expansion for microcontroller-based designs

Procurement Notes

Verify the specific suffix designation carefully, as the requested model number may differ from the verified part 7142LA25JI8. Confirm end-of-life status and lead-free compliance requirements prior to ordering. Ensure that the PLCC-52 footprint matches the target PCB design specifications exactly. Cross-reference official datasheets for any recent pinout or electrical parameter updates.

Selection Notes

Select this component when a non-volatile-like speed SRAM solution is required for dual-processor environments. Evaluate the 25ns access time against system latency requirements. Consider the 5V operating voltage compatibility with existing logic families. Assess the physical dimensions of the PLCC package against available board space constraints.

Part Context

This component belongs to the IDT/Renesas 7142 series of dual-port SRAMs. It shares architectural similarities with other members like the 7132 and 7143 series but differs in density and speed grades. The LA suffix typically denotes specific temperature ranges or packaging variations within the broader product family.

Replacement Considerations

Official substitutes include the 7142LA25JI8 which shares identical electrical characteristics and pinout. Verify mechanical compatibility before replacing. Other series members may require schematic modifications due to differing densities or voltages.