GS8640Z18GT-250I

Memory IC Overview

The GS8640Z18GT-250I is a 72 Mbit Static Random Access Memory (SRAM) manufactured by GSI Technology. It features a memory organization of 4 M x 18 bits and supports a maximum clock frequency of 250 MHz with an access time of 6.5 ns. The device operates within a supply voltage range of 2.3 V to 3.6 V, with maximum power currents specified at 250 mA and 335 mA. It utilizes a parallel interface and is housed in a TQFP-100 surface-mount package. The component is rated for industrial operating temperatures between -40°C and +85°C.

Memory IC Feature Summary

• Supports NBT Pipeline/Flow Through architecture for zero wait read-write-read bus utilization
• User-configurable Pipeline and Flow Through modes
• Includes LBO pin for Linear or Interleave Burst mode operation
• Features ZZ Pin for automatic power-down functionality

Memory IC Applications

• High-speed data buffering in telecommunications systems
• Cache memory implementation in network processing equipment
• Data storage in industrial control applications requiring wide data buses

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range (-40°C to +85°C) as distinct from commercial variants. Confirm RoHS compliance status through official manufacturer documentation. Ensure ESD handling protocols are followed due to moisture sensitivity classification. Cross-reference the exact part number against current datasheets to validate pinout compatibility with existing designs.

Memory IC Selection Notes

Select this component when a 72 Mbit capacity with a 18-bit data width is required for synchronous memory applications. The 250 MHz speed grade suits high-throughput data paths. Consider the TQFP-100 package constraints for PCB layout. Evaluate power consumption requirements against the specified maximum current ratings under varying load conditions.

Memory IC Part Context

This SRAM belongs to the GS8640Z18GT series, which offers pipelined and flow-through architectures. The series is designed for high-performance embedded memory needs. It shares pin compatibility with other devices in the family, facilitating design scalability across different memory densities and configurations within the same product line.

Memory IC Replacement Considerations

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