7142SA55J8

Overview

The Renesas Electronics Corporation 7142SA55J8 is a dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 16 kilobits, organized as 2K words by 8 bits. The device features asynchronous parallel interface with a maximum access time and write cycle time of 55 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 19.13x19.13 mm. The component is rated for commercial operating temperatures between 0°C and 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two distinct processors or systems.

Applications

• Data buffering in high-speed digital signal processing systems
• Cache memory implementation in embedded controllers
• FIFO buffer applications requiring independent read/write ports

Procurement Notes

This component is officially discontinued and no longer manufactured by Renesas Electronics. Verification of availability requires checking authorized distributors for remaining stock or obsolete inventory channels. Buyers must confirm the specific revision level and packaging format against original specifications before procurement. Alternative sourcing strategies should be initiated immediately due to end-of-life status.

Selection Notes

Designers requiring equivalent functionality should evaluate current-generation dual-port SRAMs from Renesas or other manufacturers. Selection criteria must include matching access times, voltage tolerances, and pin compatibility. Verify that replacement devices support the required 55ns performance and 52-PLCC form factor. Review updated datasheets for any changes in power consumption or environmental compliance standards compared to the legacy 7142SA series.

Part Context

The 7142SA55J8 belongs to the IDT/Renesas 7142SA family of CMOS dual-port SRAMs. This series was designed for applications requiring high-speed data exchange between two masters. The 'J8' suffix typically denotes the 52-PLCC package variant with reel tape-and-reel packaging. The family shares common electrical characteristics but varies in density and package options.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Renesas official obsolescence notices for recommended cross-reference components or next-generation replacements.