7140LA100PF

Overview

The 7140LA100PF is an 8K-bit (1K x 8) asynchronous dual-port static random-access memory (SRAM) manufactured by Renesas Electronics Corporation. It features a parallel interface with a maximum access time of 100 ns and operates within a supply voltage range of 4.5V to 5.5V. The device is housed in a 48-pin Plastic Flat Package (PFP), designed for surface-mount installation. This component supports independent read/write operations from two ports, facilitating efficient data buffering and protocol conversion in embedded systems.

Feature Summary

• Supports simultaneous independent read and write operations via two distinct ports
• Provides high-speed asynchronous data transfer with 100 ns access time
• Utilizes CMOS technology for low power consumption during operation
• Compatible with standard TTL logic levels for easy system integration

Applications

• Data buffering in communication protocols
• Cache memory for microprocessors
• FIFO buffers in digital signal processing
• Hardware acceleration in embedded controllers

Procurement Notes

Verify the exact package type and pinout compatibility before procurement, as the PF suffix denotes a specific plastic flat package configuration. Confirm RoHS compliance status with the supplier, as manufacturing processes may vary across production batches. Ensure that the 4.5V to 5.5V operating voltage aligns with your system's power supply rails to prevent malfunction or damage.

Selection Notes

Select this component when dual-port functionality is required for concurrent data handling without bus contention. The 100 ns speed class offers a balance between performance and power efficiency for general-purpose applications. Consider the 48-pin PFP package if space constraints allow for surface-mount assembly while requiring more pins than smaller packages offer.

Part Context

This part belongs to the 7140LA series of dual-port SRAMs, which are designed for versatile memory management tasks. The series typically includes variants with different access speeds and package options to suit various design requirements. As a legacy product from IDT/Renesas, it serves established designs requiring reliable, non-volatile-free memory solutions with fast access times.

Replacement Considerations

Check for direct pin-compatible replacements within the same 7140LA family, such as the 7140LA55J for faster access, though package differences exist. Verify electrical specifications against any alternative dual-port SRAMs to ensure voltage and timing compatibility.