CY7C470-40JI

FIFOs Memory Overview

The CY7C470-40JI is an asynchronous FIFO memory IC manufactured by Cypress Semiconductor Corp. It features a storage capacity of 8K x 9 bits, providing 72 Kbits of total data storage. The device supports unidirectional data transfer with a maximum data rate of 20MHz and a typical access time of 40ns. It operates within a supply voltage range of 4.5 V to 5.5 V and draws a maximum supply current of 35mA. The component is housed in a 32-LCC (J-Lead) surface-mount package, also referred to as 32-PLCC, with dimensions of 11.43x13.97 mm. It is rated for an operating temperature range of -40°C to 85°C.

FIFOs Memory Feature Summary

• Asynchronous operation allows independent read and write clock domains for flexible interface integration.
• Unidirectional data flow simplifies system design for point-to-point buffering applications.
• Programmable flags support status monitoring for empty, full, and near-empty conditions.

FIFOs Memory Applications

• Data buffering between microprocessors and peripheral devices
• Interface bridging between systems with different clock speeds
• Packet buffering in communication protocols

FIFOs Memory Procurement Notes

Verify the specific suffix '40' confirms the 40ns speed grade and 'JI' indicates the industrial temperature range (-40°C to 85°C) and 32-LCC package. Confirm RoHS non-compliance status if environmental regulations apply to your assembly process. Ensure the source document explicitly lists CY7C470-40JI as the active part number, as Cypress assets are now managed by Infineon Technologies.

FIFOs Memory Selection Notes

Select this component when asynchronous decoupling is required between logic blocks operating at different clock rates. The 8K x 9 organization suits applications needing moderate depth with 9-bit word widths. Verify that the 40ns access time meets the timing requirements of the slower interface side. Consider the 32-LCC package constraints for PCB layout and thermal management during selection.

FIFOs Memory Part Context

The CY7C470 series belongs to Cypress's standard asynchronous FIFO family, designed for general-purpose data buffering. These devices provide hardware-based handshaking via flag outputs, reducing CPU overhead compared to software-managed buffers. The CY7C470-40JI represents a specific speed and package variant within this lineage, offering reliable performance for embedded control systems.

FIFOs Memory Replacement Considerations

Check for CY7C470 variants with different speed grades (e.g., -25, -30) or packages if pin compatibility is maintained but performance needs adjustment. Verify cross-reference availability from Infineon, which acquired Cypress, ensuring the replacement maintains the same 8K x 9 architecture and asynchronous functionality.