7140LA45PDG

Overview

The Renesas Electronics Corporation 7140LA45PDG is a static random-access memory (SRAM) component featuring dual-port asynchronous technology. It provides an 8 kbit storage capacity organized as 1K x 8 bits. The device supports parallel interface communication with a maximum access time of 45 ns. It operates within a supply voltage range of 4.5 V to 5.5 V and draws a maximum power supply current of 110 mA. Designed for through-hole installation, it is housed in a 48-pin Dual In-line Package (DIP) measuring 0.600 inches (15.24 mm). The component functions reliably across a commercial temperature range from 0°C to +70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access by two processors
• Asynchronous operation eliminating the need for external clock synchronization
• Parallel data interface supporting standard bus connections
• Through-hole mounting configuration for robust mechanical attachment

Applications

• High-speed data buffering between asynchronous system components
• Cache memory implementation in embedded processing systems
• FIFO buffer applications requiring concurrent read/write operations
• Industrial control systems operating within commercial temperature limits

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm RoHS compliance documentation matches specific manufacturing lot requirements. Validate package dimensions against existing PCB footprints prior to integration. Ensure supply chain stability given discontinued production status. Review datasheet revisions for any parameter updates affecting system compatibility.

Selection Notes

Select this component when dual-port functionality is required for concurrent processor access. Choose based on the 45 ns access speed requirement for target application timing. Verify voltage compatibility with 5V logic systems within the specified operating range. Consider the 48-DIP package constraints for board layout and mechanical assembly. Evaluate thermal performance within the 0°C to +70°C operational envelope.

Part Context

This part belongs to the 7140LA series of dual-port SRAMs manufactured by Renesas Electronics. The series offers various access speeds including 45 ns and 100 ns variants. These devices are designed for applications requiring high-speed data sharing between multiple masters. The 7140LA family utilizes standard CMOS technology for low power consumption.

Replacement Considerations

Publicly confirmed substitute part numbers include 7140LA100PDG for slower access requirements. Verify pinout compatibility before substitution. Check if faster or slower access times meet system specifications. Confirm package dimensions remain identical for direct replacement.