7140SA100L48B

Overview

The Renesas Electronics Corporation 7140SA100L48B is an asynchronous dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 8 kilobits, organized as 1K words by 8 bits. The device features parallel interface access with a maximum access time of 100 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports 5.0V TTL I/O levels. The component is housed in a 48-lead Leadless Ceramic Chip Carrier (LCC) package measuring 14.22mm x 14.22mm.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two separate processors or systems.
• Asynchronous operation allowing flexible timing integration without requiring a global clock signal.
• CMOS technology implementation for low power consumption relative to older bipolar SRAM alternatives.

Applications

• High-speed data buffering between microprocessors and peripheral devices.
• Cache memory implementations in embedded control systems.
• FIFO buffer applications in communication interfaces.

Procurement Notes

Verify the specific suffix L48B to confirm the 48-lead LCC package configuration, as other suffixes indicate different physical footprints. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as legacy components may have varying environmental declarations. Check for end-of-life notifications or obsolescence notices, as this part number belongs to an older generation of SRAM products that may be subject to discontinuation or limited production runs.

Selection Notes

Select this component when a system requires independent read/write ports for concurrent data handling without bus contention. Ensure the design accommodates the 48-lead LCC surface-mount footprint and associated thermal dissipation requirements. Verify that the 100ns access speed meets the timing constraints of the host processor. Consider the 5V logic level compatibility if interfacing with legacy digital circuits.

Part Context

This component belongs to the Renesas 7140 series of dual-port SRAMs, which are designed for high-performance memory applications. The series typically includes variants with different access speeds and package options. These devices are commonly used in industrial and telecommunications equipment where reliable, fast, and independent memory access is critical for system stability and throughput.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not identified in the provided documentation. Users should consult official Renesas cross-reference tools or datasheets for compatible replacements with matching pinouts and electrical characteristics.