7142LA4J8

Overview

The Renesas Electronics Corporation 7142LA4J8 is a volatile SRAM memory IC featuring dual-port asynchronous technology. It provides a storage capacity of 16Kb organized as 2K x 8 bits. The device supports parallel interface communication with an access time and write cycle time of 100 ns. It operates within a supply voltage range of 4.5V to 5.5V and functions at temperatures between 0°C and 70°C. The component is housed in a 52-PLCC surface-mount package measuring 19.13x19.13 mm.

Feature Summary

• Dual-port architecture enabling independent simultaneous read/write operations on separate ports
• Asynchronous operation allowing flexible timing control without external clock synchronization
• Parallel data bus interface supporting standard TTL-compatible logic levels

Applications

• High-speed data buffering in embedded systems
• Cache memory implementation for microcontrollers
• FIFO buffer applications in communication interfaces

Procurement Notes

Verify RoHS compliance status as the component may not meet current environmental regulations. Confirm package dimensions match design requirements due to PLCC form factor. Check for obsolescence notices from Renesas. Ensure voltage levels align with system specifications before integration.

Selection Notes

Select this part for applications requiring independent port access for concurrent data handling. Consider the 100 ns speed for moderate performance needs. Evaluate the 52-pin PLCC package constraints against PCB layout capabilities. Verify power supply stability within the specified voltage range for reliable operation.

Part Context

This component belongs to the IDT7142 series of dual-port RAMs manufactured by Renesas Electronics. The series offers non-volatile-like persistence through SRAM technology but requires continuous power. It serves as a bridge between high-speed processors and slower peripheral devices in legacy and industrial electronic designs.

Replacement Considerations

Check for direct pin-compatible substitutes within the IDT7142 family. Verify electrical parameters such as access time and voltage ranges match exactly. Ensure package type compatibility if physical replacement is required.