71V3556SA133BG

Memory IC Overview

The IDT71V3556SA133BG is a synchronous ZBT SRAM with a memory organization of 128K x 36, providing a total capacity of 4.5 Mbit. It operates at a maximum clock frequency of 133 MHz with a typical access time of 4.2 ns. The device utilizes a 119-pin PBGA package measuring 14x22 mm and supports 3.3V I/O levels within a supply voltage range of 3.135V to 3.465V. It functions in an industrial temperature range of 0°C to 70°C.

Memory IC Feature Summary

• Supports high-performance system speeds through pipelined architecture and zero wait-state operation between write and read cycles.
• Features internally synchronized output buffer enable to eliminate the need for external OE control signals.
• Includes individual byte write capability for efficient data management across the 36-bit width.

Memory IC Applications

• High-speed networking equipment requiring low-latency buffering
• Telecommunications systems utilizing parallel interface protocols
• Industrial control applications needing reliable synchronous memory

Memory IC Procurement Notes

Verify component authenticity as this part may be discontinued or subject to product change notices. Confirm RoHS compliance status, as some sources indicate non-compliance for specific batches. Ensure the 119-PBGA footprint matches your PCB design constraints. Check for lead-free plating variations if environmental regulations apply to your deployment.

Memory IC Selection Notes

Select this component when a 128K x 36 configuration is required for synchronous burst operations. It is suitable for designs needing 133 MHz performance with 3.3V logic compatibility. Consider alternative packages like BGGI or BQ8 if different pin counts or thermal profiles are needed. Verify that the 119-ball BGA assembly process aligns with your manufacturing capabilities.

Memory IC Part Context

This device belongs to the IDT71V3556/58 family of 3.3V Synchronous ZBT SRAMs. The family includes variants with different organizations such as 256K x 18 and speed grades ranging from 100 MHz to 200 MHz. The SA suffix typically denotes specific package and speed combinations within the broader synchronous SRAM portfolio offered by Integrated Device Technology.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include IDT71V3556SA133BGGI and IDT71V3556XS133PFG8. Verify pinout compatibility and electrical specifications before substitution. Note that package types differ between BGA and QFP options within the same speed grade.