7142SA100L48B

Overview

The Renesas Electronics Corporation 7142SA100L48B is a dual-port static random access memory (SRAM) IC with a total storage capacity of 16 kilobits. The device utilizes a parallel interface and operates on a supply voltage ranging from 4.5V to 5.5V. It features an access time of 100 nanoseconds, supporting asynchronous data transfer operations. The memory organization is configured as 2K words by 8 bits. This component is housed in a 48-lead side brazed ceramic dual in-line package designed for through-hole mounting. The unit is rated for operation within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access to the same memory array
• Asynchronous parallel interface for straightforward system integration
• Side-brazed ceramic package construction providing robust mechanical stability

Applications

• High-speed data buffering in industrial control systems
• FIFO buffer applications in telecommunications equipment
• Cache memory implementation in embedded processing units

Procurement Notes

This specific part number is officially listed as obsolete or end-of-life by the manufacturer. Verification of current availability requires direct consultation with authorized distributors or legacy support channels. Sourcing should focus on verified surplus stock or certified replacement alternatives that meet the original electrical and mechanical specifications. Ensure compliance with RoHS directives if required by the target application environment.

Selection Notes

Select this component when a high-reliability ceramic package is mandatory for harsh environments requiring side-brazed sealing. The 100ns access speed suits moderate-frequency parallel bus architectures. Consider the 16Kb density and 2Kx8 organization against system memory requirements. Verify that the 4.5V to 5.5V supply range aligns with existing power rails without necessitating level shifting.

Part Context

The 7142SA series represents a family of high-performance dual-port SRAMs manufactured by Renesas Electronics. These devices are engineered for applications demanding concurrent read/write operations from two distinct ports. The SA suffix typically denotes the speed grade, while the L48B indicates the specific leaded ceramic package variant. This series serves as a bridge between standard SRAMs and specialized FIFOs in legacy industrial designs.

Replacement Considerations

Public confirmed substitute part numbers: IDT7142SA100C, IDT7142SA55CB.