7142LA35J

Overview

The Renesas Electronics Corporation 7142LA35J is a dual-port static random-access memory (SRAM) integrated circuit. It features a storage capacity of 16 kilobits organized as 2K by 8 bits. The device utilizes a parallel interface with an access time and write cycle time of 35 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The component is housed in a 52-lead Plastic Leadless Chip Carrier (PLCC) package measuring 19.13mm by 19.13mm. It supports surface mount installation and functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• True dual-port architecture enabling simultaneous independent access to the same memory location by two separate processors without external arbitration logic.
• Asynchronous operation designed for high-speed data transfer, functioning effectively as a slave device when paired with compatible master dual-port RAM components.
• Integrated automatic power-down capability controlled by chip enable signals, allowing the internal circuitry to enter a low standby power mode.

Applications

• High-speed data buffering in industrial equipment requiring real-time processing capabilities.
• Communication systems utilizing asynchronous data transfer protocols between multiple processing units.
• Embedded control architectures employing dual-processor configurations for redundant or parallel task execution.

Procurement Notes

This component is officially discontinued and no longer manufactured by Renesas Electronics Corporation. Procurement is restricted to existing stock held by authorized distributors or third-party suppliers. Buyers must verify the authenticity and physical condition of available inventory carefully. Sourcing should prioritize reputable channels to mitigate risks associated with obsolete electronic components. Long-term availability cannot be guaranteed, necessitating immediate evaluation of replacement strategies for ongoing production needs.

Selection Notes

Engineers selecting this part must account for its discontinuation status and limited future availability. The 35ns access speed defines its performance envelope for asynchronous applications. Compatibility with master dual-port RAM devices is required for optimal system integration in word widths of 16 bits or more. Designers should evaluate alternative packages such as DIP or LCC if pin compatibility varies across the product family. Thermal management considerations remain relevant due to the specified operating temperature range limits.

Part Context

The 7142LA35J belongs to the broader 7142 series of dual-port SRAMs produced by Integrated Device Technology, now part of Renesas Electronics. This series provides high-speed memory solutions for complex digital systems. The LA suffix typically denotes specific electrical characteristics or packaging variations within the family. These components are engineered to eliminate the need for discrete logic in multi-port memory designs, simplifying board layouts and reducing overall system complexity.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not identified in the provided documentation. Engineers should consult official manufacturer resources for current obsolescence notices and recommended upgrades. Alternative selection requires verifying functional equivalence regarding access times, voltage levels, and package dimensions.