70121S35JG8

Memory IC Overview

The 70121S35JG8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It features a storage capacity of 16Kb organized as 2K x 8 bits. The device supports parallel interface access with a maximum access time of 35 ns. It operates within a supply voltage range of 3V to 3.6V and is designed for surface-mount installation in a 52-PLCC package measuring 19.13x19.13 mm. The component functions as a standalone memory unit or as a master chip in expanded configurations.

Memory IC Feature Summary

• Dual-port architecture enabling independent simultaneous access from two separate ports without external arbitration logic.
• Asynchronous operation allowing flexible timing control for both read and write cycles across either port.
• Integrated power-down functionality controlled by chip enable signals to minimize standby power consumption.

Memory IC Applications

• High-speed data buffering in embedded systems requiring concurrent host and peripheral access
• Industrial control systems utilizing asynchronous communication protocols
• Automotive electronics applications compatible with specified voltage and temperature ranges

Memory IC Procurement Notes

Verify RoHS compliance status carefully, as documentation indicates non-compliance for this specific part number. Confirm end-of-life notifications and discontinuation timelines prior to procurement. Ensure the 52-PLCC package dimensions align with existing PCB footprints. Validate that the 3V to 3.6V operating range matches system power rails. Check for alternative lead-free options if environmental regulations require strict adherence.

Memory IC Selection Notes

Select this component when dual-port concurrency is required without external logic overhead. The 35 ns speed suits moderate-frequency asynchronous interfaces. The 52-PLCC package offers robust mechanical stability for industrial environments. Consider the 3V to 3.6V voltage window against system noise margins. Evaluate the 16Kb capacity against buffer depth requirements for target application throughput.

Memory IC Part Context

This part belongs to the 70121 series of dual-port SRAMs, which are designed for versatile memory expansion. The 'S' suffix typically denotes specific speed grades or packaging variations within the family. Renesas acquired IDT, retaining these legacy high-performance memory lines. The series supports master-slave configurations for wider data buses, though this specific model serves as an 8-bit wide unit.

Memory IC Replacement Considerations

IDT71V321S35J8 is a documented alias for this component. Verify pinout compatibility before substitution. Ensure the replacement maintains the 52-PLCC form factor. Confirm identical electrical characteristics for seamless integration into existing designs.