GS8642Z36GB-300I

Memory IC Overview

The GS8642Z36GB-300I is a 72 Mbit synchronous burst static random access memory (SRAM) manufactured by GSI Technology Inc. It features a memory organization of 2 Megawords by 36 bits, providing high-density data storage within a compact footprint. The device supports a maximum clock frequency of 300 MHz with an access time of 5.5 ns, ensuring rapid data retrieval for high-speed applications. It operates on dual power supplies: a core voltage range of 2.3 V to 2.7 V and an I/O voltage range of 3.0 V to 3.6 V. Maximum supply currents are specified at 320 mA for the core and 440 mA for I/O. The component is housed in a 119-pin Fine-Pitch Ball Grid Array (FPBGA) package measuring 22 mm by 14 mm, suitable for surface mount technology. It functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports No Bus Turn Around (NBT) functionality to enable zero wait Read-Write-Read bus utilization
• Features user-configurable Pipeline and Flow Through operational modes
• Includes IEEE 1149.1 JTAG-compatible Boundary Scan for testing and verification
• Offers ZQ mode pin for user-selectable high or low output drive strength

Memory IC Applications

• High-performance networking equipment requiring fast packet buffering
• Industrial control systems demanding reliable data storage in extreme temperatures
• Telecommunications infrastructure utilizing synchronous burst memory architectures

Memory IC Procurement Notes

Verify that the specific order matches the GS8642Z36GB-300I designation, as suffixes indicate critical variations in speed grade, temperature rating, and package type. Confirm compatibility with the required 2.5V core and 3.3V I/O supply rails before integration. Ensure handling procedures account for moisture sensitivity level 3 requirements during storage and assembly processes.

Memory IC Selection Notes

Select this component when a 72 Mbit capacity with a 36-bit width is required for parallel interface designs. It is appropriate for systems needing 300 MHz operation speeds and industrial temperature resilience. Consider alternative speed grades if lower power consumption is prioritized over maximum throughput, or different packages if board space constraints differ from the 119-pin BGA form factor.

Memory IC Part Context

This part belongs to the GS8642Z36GB series of NBT SRAMs from GSI Technology. These devices are designed to be fully pin-compatible with pipelined and flow-through NtRAM, NoBL, and ZBT SRAMs, facilitating direct upgrades in existing designs. The series supports byte write operations and includes multiple chip enables for depth expansion, offering flexibility in system architecture planning.

Memory IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.