7142LA35P

Overview

The Renesas Electronics Corporation 7142LA35P is a high-speed, asynchronous dual-port static random-access memory (SRAM) integrated circuit. It features a storage capacity of 16 kilobits organized as 2K words by 8 bits. The device supports parallel interface communication with an access 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 48-pin Plastic Leaded Chip Carrier (PLCC) surface-mount package and is designed for industrial temperature ranges.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to the same memory location from both ports without conflict.
• Asynchronous operation with automatic power-down capabilities controlled by chip enable signals to minimize standby power consumption.
• TTL-compatible logic levels allowing direct interfacing with standard digital systems using a single 5V power supply.
• Battery backup support capability providing data retention down to 2V for critical information preservation during main power loss.

Applications

• High-speed data buffering in telecommunications equipment requiring low-latency parallel data transfer.
• Real-time signal processing systems utilizing dual-port architecture for master-slave data exchange configurations.
• Industrial control units requiring reliable volatile memory with battery-backed data retention capabilities.
• Automated test equipment interfaces needing fast, non-blocking memory access for concurrent read/write operations.

Procurement Notes

Verify component authenticity through authorized distributors due to potential availability of refurbished or obsolete stock. Confirm RoHS compliance status as older manufacturing runs may not meet current environmental directives. Validate package integrity upon receipt, ensuring no pin damage occurred during handling. Check datasheet revisions for any specific electrical parameter updates that may affect system compatibility.

Selection Notes

Select this component when simultaneous bidirectional data access is required without external arbitration logic. Choose the PLCC package for applications necessitating surface-mount assembly with robust mechanical stability. Ensure the system design accommodates the 35ns access speed and 5V operating voltage requirements. Consider battery backup circuitry if data persistence during power interruptions is a critical system requirement.

Part Context

This part belongs to the 7142 series of dual-port SRAMs manufactured by Renesas Electronics. It serves as a slave device in multi-word width systems when paired with compatible master controllers. The series is characterized by high-speed asynchronous operation and true dual-port functionality. It represents a specialized memory solution for applications demanding concurrent access without complex handshake protocols.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence carefully if considering alternative manufacturers. Ensure pinout compatibility and electrical specifications match exactly before substitution. Consult official manufacturer resources for updated product line recommendations.