7142LA20JG8

Overview

The Renesas Electronics Corporation 7142LA20JG8 is a high-speed, 8Kb (1K x 8) dual-port static random-access memory (SRAM). It operates asynchronously with a maximum access time of 20 ns. The device supports a single 5V power supply within the 4.5V to 5.5V range and features TTL-compatible I/O levels. Packaged in a 52-pin Plastic Leadless Chip Carrier (PLCC), it is designed for surface-mount installation. The component functions as a slave memory unit in parallel architectures.

Feature Summary

• True dual-ported memory cells enabling simultaneous independent access to identical memory locations from both ports without conflict.
• Integrated BUSY output flag that signals when a port is occupied, facilitating hardware-based arbitration between accessing devices.
• Automatic power-down capability controlled by chip enable inputs, allowing on-chip circuitry to enter low standby power modes.

Applications

• High-speed data buffering in embedded systems requiring concurrent read/write operations.
• Interprocessor communication links where two processors share data via dual-port architecture.
• Slave memory expansion in 16-bit or wider word width systems paired with master dual-port RAM units.

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and lead condition upon receipt. Check RoHS3 compliance documentation. Validate datasheet revisions against current manufacturing standards. Ensure storage conditions meet moisture sensitivity level requirements prior to soldering.

Selection Notes

Select this part for applications requiring true dual-port concurrency with minimal external logic. Suitable for systems needing 20 ns asynchronous access speeds. Verify voltage compatibility with 5V logic families. Consider PLCC footprint constraints during PCB layout. Evaluate thermal performance within the specified commercial temperature range.

Part Context

This component belongs to the 7142 series of dual-port SRAMs manufactured by Renesas Electronics. It serves as a specialized memory solution for parallel processing environments. The LA suffix indicates specific electrical characteristics compatible with standard 5V operation. The JG8 designation identifies the specific plastic leadless chip carrier package variant used for surface mounting.

Replacement Considerations

Public confirmed substitute part numbers are not available. This product has been declared obsolete. Designers should evaluate newer dual-port SRAM families from the manufacturer or alternative vendors offering equivalent pinouts and timing specifications.