7142SA25JI8

Overview

The 7142SA25JI8 is a high-speed dual-port static random-access memory (SRAM) manufactured by Renesas Electronics. It features a storage capacity of 16 kilobits organized as 2K words by 8 bits per word. The device supports asynchronous parallel interface operation with a maximum access time of 25 nanoseconds. It operates on a single TTL-compatible 5V power supply, ranging from 4.5V to 5.5V. The component is housed in a 52-pin Plastic Leadless Chip Carrier (PLCC) package and is designed for surface-mount installation.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to the same memory location by two separate ports without conflict.
• Integrated BUSY input flag mechanism that signals when a port is accessing shared memory, facilitating error-free system integration.
• Automatic power-down feature controlled by chip enable inputs, allowing the internal circuitry to enter a low standby power mode.

Applications

• High-speed data buffering in communication systems requiring simultaneous read/write operations.
• Cache memory implementations in embedded processing architectures.
• Data acquisition systems utilizing master-slave dual-port RAM configurations.

Procurement Notes

Verify current availability status as this component may be subject to discontinuation notices. Confirm package integrity and moisture sensitivity level handling requirements prior to assembly. Ensure compatibility with existing PCB footprints for the 52-PLCC configuration. Review official datasheets for updated electrical specifications and operating temperature ranges before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring true dual-port functionality with fast 25ns access times. It serves effectively as a slave device in systems paired with master dual-port RAMs to expand word width. Consider the 52-PLCC package constraints for surface-mount design. Evaluate power consumption profiles against system requirements given the automatic power-down capabilities.

Part Context

This part belongs to the 7142 series of dual-port SRAMs, which are designed for high-performance memory applications. The series includes variants with different access speeds and organizational structures. These devices are commonly used in industrial and commercial electronics where reliable, high-speed data sharing between two processors or controllers is essential.

Replacement Considerations

Check for direct pin-to-pin replacements within the same family, such as other speed grades in the 7142SA series. Verify if upgraded versions with RoHS compliance are available as substitutes. Ensure any replacement maintains the 2Kx8 organization and 52-PLCC form factor for mechanical compatibility.