CY7C4291V-15JC

FIFOs Memory Overview

The CY7C4291V-15JC is a 128K x 9 low-voltage Deep Sync FIFO memory fabricated using 0.35-micron CMOS technology. It operates at a maximum frequency of 66.7 MHz with a maximum access time of 10 ns. The device supports 3.3V operation, featuring independent read and write clocks for asynchronous or simultaneous data transfer. It includes programmable Almost Empty and Almost Full flags, width-expansion capability, and is housed in a 32-pin PLCC package.

FIFOs Memory Feature Summary

• Supports fully asynchronous and simultaneous read and write operations with independent clock inputs.
• Features programmable Almost Empty and Almost Full status flags for precise buffer management.
• Enables width expansion by connecting multiple devices to increase word width.
• Provides three-state outputs controlled by an Output Enable pin.

FIFOs Memory Applications

• High-speed data acquisition systems
• Multiprocessor interfaces
• Communications buffering

FIFOs Memory Procurement Notes

Verify the specific suffix 'JC' corresponds to the Commercial temperature range (0°C to +70°C) and 32-pin PLCC package as defined in the ordering information. Confirm that the -15 speed grade matches the required 66.7 MHz maximum frequency and 10 ns access time specifications for your design constraints.

FIFOs Memory Selection Notes

Select this component when a 128K x 9 depth is required for low-voltage synchronous FIFO applications. Ensure the system supports 3.3V logic levels and can accommodate the 32-pin PLCC footprint. Consider the CY7C4291V-15JI variant if an Industrial temperature range (-40°C to +85°C) is necessary instead of the Commercial range.

FIFOs Memory Part Context

This part belongs to the Cypress/Infineon CY7C42x1V family of low-voltage Deep Sync FIFOs. The family includes density variants such as the 16K x 9 CY7C4261V, 32K x 9 CY7C4271V, and 64K x 9 CY7C4281V. All members share pin compatibility and similar functional architectures, allowing for density upgrades within the same package type.

FIFOs Memory Replacement Considerations

The CY7C4291V-15JI serves as the industrial temperature range equivalent within the same package and speed grade. Other density variants like the CY7C4281V-15JC are pin-compatible but offer different storage capacities.