7143SA35J

Overview

The Renesas Electronics Corporation 7143SA35J is a high-speed, asynchronous dual-port static random-access memory (SRAM) IC. It features a storage capacity of 32 kilobits organized as 2K words by 8 bits per port, utilizing parallel interface technology. The device operates with a maximum access time and write cycle time of 35 nanoseconds. It requires a single 5V power supply within the range of 4.5V to 5.5V. The component is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount installation. It supports an industrial operating temperature range from 0°C to +70°C.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to the same memory location from both ports without conflict.
• Integrated on-chip port arbitration logic manages bus contention automatically, eliminating the need for external discrete logic components.
• Supports battery backup operation with data retention capabilities down to 2V, ensuring data integrity during main power loss.
• TTL-compatible inputs and outputs allow direct interfacing with standard logic families using a single 5V power supply.

Applications

• High-performance computing systems requiring fast, concurrent data access from multiple processors.
• Industrial automation controllers needing reliable volatile memory for real-time data buffering.
• Telecommunications equipment utilizing dual-port RAM for signal processing and protocol handling.
• Network infrastructure devices employing master/slave configurations for expanded data bus widths.

Procurement Notes

Verify component authenticity through authorized distributors or official Renesas channels due to end-of-life status. Confirm package integrity and moisture sensitivity level handling procedures before assembly. Check for specific revision markings or date codes that may indicate last-time-buy inventory. Ensure compatibility with existing PCB footprints and soldering profiles for PLCC-68 packages. Validate regulatory compliance requirements against current environmental standards.

Selection Notes

Select this component when simultaneous bidirectional memory access is required without external arbitration hardware. Consider the 35ns speed grade if system timing allows for slower alternatives. Evaluate the 68-pin PLCC package constraints regarding board space and thermal management. Assess the 5V supply requirement against modern low-voltage logic levels. Review the industrial temperature range suitability for the intended operational environment.

Part Context

This part belongs to the IDT/Renesas 7143 series of dual-port SRAMs, which are widely used in applications demanding high-speed data sharing between two independent masters. The series offers various speed grades and packaging options to suit different performance and form-factor needs. These devices are known for their robust arbitration logic and ease of integration into complex digital systems.

Replacement Considerations

Publicly confirmed substitute part numbers for the 7143SA35J are not available in the provided documentation. Users should consult official Renesas resources for potential obsolescence management strategies or alternative product recommendations.