71421LA20PF8

Overview

The Renesas Electronics Corporation 71421LA20PF8 is a dual-port, asynchronous static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 16 kilobits organized as 2K words by 8 bits. The device features a parallel interface with a maximum access time of 20 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 64-TQFP package measuring 14x14 mm. The component is rated for an operating temperature range of 0°C to 70°C.

Feature Summary

• Supports simultaneous independent access to the same memory location from two separate ports without conflict.
• Includes automatic power-down functionality controlled by chip enable signals to minimize standby power consumption.
• Compatible with TTL logic levels using a single positive power supply.

Applications

• High-speed data buffering in real-time processing systems
• Cache memory implementation in embedded controllers
• Data storage in industrial automation equipment

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance requirements as the part may not meet current environmental standards. Validate package integrity upon receipt. Ensure design compatibility with existing system voltage and timing specifications before procurement.

Selection Notes

Select this component when dual-port capability is required for concurrent master-slave memory operations. Consider the 20 ns access speed for high-throughput applications. Evaluate the 64-TQFP footprint against available board space. Verify that the commercial temperature range meets operational environment constraints.

Part Context

This part belongs to the 71421LA series of dual-port SRAMs manufactured by Renesas Electronics. It serves as a slave memory device designed to operate alongside master dual-port RAMs to expand word width in 16-bit or wider systems. The series enables full-speed error-free operation without additional discrete logic components.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference availability through official manufacturer channels.