IS61LF12836A-6.5TQLI

Memory IC Overview

The IS61LF12836A-6.5TQLI is a Synchronous Single Data Rate (SDR) Static Random Access Memory (SRAM) integrated circuit manufactured by ISSI. It provides a total storage capacity of 4.5 Mbit, organized as 128K words by 36 bits. The device supports a maximum clock frequency of 133 MHz with a guaranteed access time of 6.5 ns. It operates on a 3.3V I/O supply voltage and utilizes a parallel interface for data transfer. The component is housed in a 100-pin LQFP package measuring 14x20 mm, designed for surface-mount technology applications.

Memory IC Feature Summary

• Supports synchronous single data rate operation with flow-through mode for high-speed data processing
• Provides 36-bit wide data output to accommodate complex word structures without external multiplexing
• Features low-voltage 3.3V I/O compatibility for integration with standard logic families

Memory IC Applications

• High-performance networking equipment requiring fast packet buffering
• Industrial control systems needing reliable volatile memory for real-time data handling
• Telecommunications infrastructure utilizing synchronous memory interfaces

Memory IC Procurement Notes

Verify the specific speed grade suffix matches the required system timing constraints before procurement. Confirm that the 100-pin LQFP footprint aligns with the target PCB layout specifications. Ensure that the 3.3V I/O voltage levels are compatible with the host processor or FPGA signals to prevent electrical overstress or signal integrity issues during operation.

Memory IC Selection Notes

Select this component when a 36-bit data width is necessary to minimize bus transactions and improve throughput efficiency. The 6.5 ns access time suits designs demanding higher bandwidth than slower SRAM variants. Consider the LQFP package size relative to available board space compared to BGA alternatives within the same memory density family.

Memory IC Part Context

This part belongs to the IS61LF12836A series of synchronous SRAMs from ISSI. It shares the 128K x 36 organization with other speed grades in the lineup but offers a faster 6.5 ns access time compared to the 7.5 ns variant. The series is characterized by its synchronous interface and 3.3V operation, targeting embedded memory needs in communication and computing devices.

Memory IC Replacement Considerations

The IS61LF12836A-7.5TQLI serves as a verified substitute with identical pinout and organization but a slower 7.5 ns access time. Verify that the reduced speed meets the system's minimum timing requirements before substitution.