71342SA45J

Memory IC Overview

The Renesas Electronics Corporation 71342SA45J is a high-speed, 32Kb (4K x 8) dual-port static random-access memory (SRAM). It operates asynchronously with a maximum access time of 45 nanoseconds. The device supports parallel interface communication and functions within a supply voltage range of 4.5V to 5.5V. It is housed in a 52-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount installation.

Memory IC Feature Summary

• Provides fully independent dual ports allowing simultaneous access to the same memory location without conflict.
• Integrates on-chip hardware semaphore logic to facilitate arbitration between the two ports.
• Supports automatic power-down modes controlled by chip enable and semaphore signals for low standby power.

Memory IC Applications

• High-speed data buffering in telecommunications systems
• Cache memory implementation in embedded controllers
• Data storage in industrial automation equipment

Memory IC Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm package integrity as moisture sensitivity levels may affect solderability. Review end-of-life notifications for availability constraints. Ensure compatibility with existing board layouts regarding the 52-PLCC footprint. Validate electrical specifications against current system requirements before integration.

Memory IC Selection Notes

Select this component when asynchronous dual-port functionality with hardware semaphore support is required. The 45ns speed suits moderate-to-high frequency applications. Verify that the 52-PLCC package aligns with manufacturing capabilities. Consider the 4.5V to 5.5V operating range for power supply design. Evaluate alternative packages if surface-mount density differs from PLCC constraints.

Memory IC Part Context

This part belongs to the 71342SA series of dual-port SRAMs. It shares architectural similarities with other variants differing primarily in access speed and package type. The series emphasizes independent port operation and semaphore-based arbitration. It serves as a legacy solution for systems requiring concurrent memory access without external arbitration logic.

Memory IC Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with IDT-branded equivalents such as IDT71342SA45J if pin-compatible alternatives are required. Verify functional equivalence regarding semaphore logic and access times before substitution.