71421LA55PF8

Overview

The Renesas Electronics Corporation 71421LA55PF8 is a dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 16 kilobits, organized as 2K words by 8 bits. The device utilizes an asynchronous parallel interface with a maximum access time of 55 nanoseconds. It operates within a supply voltage range of 4.5 volts to 5.5 volts and is housed in a 64-lead Thin Quad Flat Package (TQFP) measuring 14x14 millimeters. The component supports surface-mount installation and functions within an ambient temperature range of 0°C to 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous read/write operations on separate ports
• Asynchronous parallel interface for flexible system integration
• Volatile memory technology retaining data only during active power supply

Applications

• Data buffering in high-speed digital signal processing systems
• Cache memory implementation in embedded microcontroller architectures
• FIFO buffer applications in telecommunications equipment

Procurement Notes

Verify the specific suffix 'PF8' against official manufacturer documentation to confirm package type and tape-and-reel configuration. Confirm RoHS compliance status, as older variants may not meet current environmental directives. Validate that the 55ns speed grade matches system timing requirements before procurement.

Selection Notes

Select this component when a 16Kb dual-port SRAM with a 55ns access time is required in a 64-pin TQFP package. Ensure the design accommodates the 4.5V to 5.5V operating voltage range. Consider the commercial temperature range limits if operation outside 0°C to 70°C is necessary.

Part Context

This part belongs to the Renesas 71321/71421 series of dual-port SRAMs. These devices are designed for applications requiring independent port access. The 'LA' designation typically indicates a lead-free or specific material variant within the product line, while 'PF8' denotes the 64-TQFP package with reel packaging.

Replacement Considerations

Official upgrade substitutes include the 71321LA20PFG8 and 71421LA20PFG. Verify pin compatibility and electrical specifications before substitution.