7143LA20JG8

Overview

The Renesas Electronics Corporation 7143LA20JG8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It features a storage capacity of 32 kilobits organized as 2K words by 16 bits. The component supports parallel interface communication with an access time of 20 nanoseconds. It operates on a single 5V power supply within a voltage range of 4.5V to 5.5V. The device is housed in a 68-pin Plastic Leadless Chip Carrier (PLCC) package measuring 19.13mm by 19.13mm. It is designed for industrial temperature ranges from 0°C to 70°C and utilizes surface-mount technology.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to the same memory location from both ports without conflict.
• Integrated on-chip port arbitration logic manages data bus contention automatically, eliminating the need for external discrete logic components.
• Versatile byte-level write control allows separate management of upper and lower bytes, facilitating expansion to wider data buses such as 32-bit configurations.
• Fully asynchronous operation ensures compatibility with various system clock speeds while supporting battery backup modes for data retention.

Applications

• High-speed data buffering in telecommunications equipment requiring error-free parallel data transfer.
• Master/Slave dual-port RAM configurations in 32-bit or wider memory systems.
• Real-time control applications demanding simultaneous read/write operations from different processors.
• Industrial automation systems operating within standard commercial temperature ranges.

Procurement Notes

Verify component authenticity through authorized distributors due to potential counterfeit risks. Confirm RoHS3 compliance status and check for specific manufacturing date codes relevant to your assembly timeline. Ensure proper handling procedures are followed as the device exhibits moisture sensitivity level 3. Review official datasheets for pinout accuracy before PCB layout finalization.

Selection Notes

Select this component when true dual-port functionality is required for concurrent processor access. Consider the 20ns access speed and 32Kb density for moderate-capacity buffering needs. Evaluate the PLCC package constraints against available board space. Compare against other 7143 series variants if different pin counts or temperature ranges are necessary for the specific application environment.

Part Context

This part belongs to the IDT/Renesas 7143LA family of dual-port SRAMs. It shares architectural similarities with the 7133 and 7140 series but offers distinct 2Kx16 organization. The LA suffix typically denotes commercial temperature range specifications. This family is widely used in legacy and specialized embedded systems requiring reliable non-volatile-like performance without the complexity of flash management.

Replacement Considerations

Direct substitutes include the 7143SA20G in PGA packaging or the 7143LA25G with slightly slower access times. Verify pin compatibility and electrical characteristics before substitution. Consult manufacturer obsolescence notices for long-term availability concerns regarding this specific PLCC variant.