GS8640Z18GT-167IV

Memory IC Overview

The GS8640Z18GT-167IV is a 72 Mbit Synchronous Burst Static Random Access Memory (SRAM) manufactured by GSI Technology. It features a memory organization of 4 Megawords by 18 bits and supports a maximum clock frequency of 167 MHz with an access time of 8 ns. The device operates on dual power supplies: a 1.8 V core supply and a 1.8 V I/O supply, with voltage ranges of 1.7 V to 2.7 V for the core and 1.7 V to 2.7 V for I/O. Maximum power consumption is specified at 215 mA and 260 mA under different operating conditions. It utilizes a parallel interface and is housed in a 100-lead TQFP package suitable for surface mount technology.

Memory IC Feature Summary

• Supports NBT (No Bus Turn Around) functionality for zero wait read-write-read bus utilization
• User-configurable Pipeline and Flow Through architecture modes
• LBO pin enables selection between Linear or Interleave Burst modes
• Includes ZZ Pin for automatic power-down management

Memory IC Applications

• High-performance networking equipment requiring low-latency data buffering
• Industrial control systems utilizing synchronous burst memory interfaces
• Embedded applications demanding configurable pipeline or flow-through architectures

Memory IC Procurement Notes

Verify that the specific part number suffix matches the required voltage and temperature specifications. Confirm RoHS compliance status and lead-free packaging requirements against current manufacturing standards. Ensure the procurement channel provides valid traceability documentation for the GSI Technology brand. Cross-reference the datasheet revision to confirm feature availability such as NBT and LBO configurations.

Memory IC Selection Notes

Select this component when a 72 Mbit capacity with 18-bit width is required for synchronous burst operations. The 167 MHz speed grade suits designs needing 8 ns access times within the commercial or industrial temperature range. Verify compatibility with existing system voltage rails, specifically the 1.8 V core and I/O requirements. Consider the 100-lead TQFP footprint for PCB layout constraints and thermal dissipation needs.

Memory IC Part Context

This device belongs to the GS8640Z series of 72 Mbit Pipelined and Flow Through Synchronous NBT SRAMs. It is designed to offer high bandwidth efficiency through its NoBL technology. The series maintains pin compatibility across various densities and speeds, facilitating design upgrades without board redesign. It represents a solution for applications requiring fast, reliable static memory with flexible burst mode options.

Memory IC Replacement Considerations

The GS8640Z18GT-167 is a compatible variant within the same family, differing primarily in operating voltage and temperature range specifications. Verify electrical parameters and environmental ratings before substitution.