7142LA20J

Overview

The Renesas 7142LA20J is an asynchronous dual-port static random-access memory (SRAM) integrated circuit. It features a storage capacity of 16 kilobits organized as 2K x 8 bits. The device operates with a maximum access time of 20 nanoseconds and supports parallel interface communication. It functions within a supply voltage range of 4.5V to 5.5V and is designed for surface-mount installation in a 52-pin Plastic Leadless Chip Carrier (PLCC) package.

Feature Summary

• Supports simultaneous independent access to the same memory location by both ports
• Includes automatic power-down functionality controlled by chip enable signals
• Compatible with TTL logic levels using a single positive voltage supply

Applications

• High-speed data buffering in embedded systems
• Cache memory implementation in microprocessor architectures
• Data storage in industrial control applications

Procurement Notes

Verify component authenticity through authorized channels due to obsolete status. Confirm RoHS compliance requirements against specific project standards, as manufacturing variations exist. Validate package dimensions and pinout compatibility during integration planning. Review official datasheets for detailed electrical characteristics and handling precautions before deployment.

Selection Notes

Select this component when dual-port architecture is required for concurrent master-slave operations. Ensure system timing constraints align with the 20ns access specification. Verify that the 52-PLCC footprint matches the printed circuit board layout. Consider alternative packages if lead-free soldering processes are mandatory for the assembly line.

Part Context

This part belongs to the IDT7142LA series of high-speed dual-port SRAMs manufactured by Renesas Electronics. It is engineered to operate alongside master port devices to facilitate error-free data transfer without external discrete logic. The LA suffix indicates commercial temperature range operation and specific battery backup capabilities.

Replacement Considerations

Consult manufacturer documentation for verified cross-reference part numbers. Evaluate mechanical pin compatibility and logical equivalence before substitution.