71342LA20JG8

Overview

The Renesas Electronics Corporation 71342LA20JG8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It provides a total storage capacity of 32 kilobits, organized as 4K words by 8 bits. The component features independent read/write ports with a maximum access time of 20 nanoseconds and a write cycle time of 20 nanoseconds. It operates on a single TTL-compatible 5V power supply within a voltage range of 4.5V to 5.5V. The device is housed in a 52-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount technology. It supports an operating temperature range from 0°C to +70°C.

Feature Summary

• True dual-ported architecture enabling simultaneous independent access to the same memory location from both ports without contention.
• Integrated hardware semaphore logic block providing automatic port arbitration and flag control between the two access sides.
• Automatic power-down functionality that reduces standby current when chip enable and semaphore signals are inactive.
• Asynchronous operation allowing flexible timing integration into various system architectures.

Applications

• High-speed data buffering in telecommunications equipment requiring simultaneous bidirectional data flow.
• Network switch and router memory modules for packet processing and traffic management.
• Industrial automation controllers needing reliable real-time data exchange between processors.
• Embedded systems requiring hardware-based synchronization for concurrent memory operations.

Procurement Notes

Verify the specific suffix JG8 against official Renesas documentation to confirm the PLCC52 package and commercial temperature grade. Confirm RoHS compliance status as manufacturing processes may vary. Check for End-of-Life notices or Product Change Notifications regarding label changes or obsolescence before finalizing procurement plans.

Selection Notes

Select this component when true dual-port capability with hardware arbitration is required for 32Kb memory applications. Ensure the design accommodates the 52-pin PLCC footprint and 5V logic levels. Consider alternative packages like TQFP if board space constraints differ, provided the pinout compatibility is verified through official datasheets.

Part Context

This part belongs to the 71342LA series of dual-port SRAMs manufactured by Renesas Electronics. The series is characterized by its semaphore support and asynchronous interface. It serves as a specialized memory solution for applications demanding high-speed, conflict-free data sharing between multiple masters or processors.

Replacement Considerations

Official substitutes include other variants within the 71342LA family with different access times or packages. Verify electrical compatibility and pin assignments before substitution. Cross-reference with IDT equivalents if specified in legacy documentation, ensuring functional parity.