70121S55JG8

Memory IC Overview

The 70121S55JG8 is a high-speed dual-port static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It features an asynchronous architecture with a storage capacity of 18 kilobits, organized as 2K words by 9 bits. The device supports parallel interface communication and operates within a supply voltage range of 4.5V to 5.5V. It utilizes a 52-pin Plastic Leadless Chip Carrier (PLCC) package designed for surface-mount installation. The component is rated for commercial operating temperatures ranging from 0°C to 70°C.

Memory IC Feature Summary

• Dual-port architecture enabling independent access from two distinct ports
• Asynchronous operation requiring no external clock signals
• On-chip port arbitration logic for master-slave expansion configurations

Memory IC Applications

• High-speed data buffering in industrial control systems
• Master-slave memory expansion architectures
• Battery-backed data retention applications

Memory IC Procurement Notes

Verify the specific suffix JG8 against official Renesas documentation to confirm package dimensions and pinout compatibility. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for obsolescence notices or product change notifications that may affect long-term availability or manufacturing sources.

Memory IC Selection Notes

Select this component when a system requires simultaneous independent access to shared memory without external arbitration logic. Ensure the design accommodates the 52-pin PLCC footprint and 5V logic levels. Verify that the 18-bit word width configuration meets the specific data bus requirements of the target application.

Memory IC Part Context

This part belongs to the IDT 70121 series of dual-port SRAMs. It is designed to function as a standalone unit or as a master chip in conjunction with slave devices like the 70125 to expand data bus widths. The series emphasizes full-speed error-free operation in wider memory systems.

Memory IC Replacement Considerations

Consult official manufacturer substitution guides for verified equivalents. Generic cross-references may not match the specific master-slave arbitration logic or pinout configurations required for seamless integration.