7142LA100P

Overview

The Renesas Electronics Corporation 7142LA100P is a high-speed, asynchronous dual-port static random-access memory (SRAM) device. It features a storage capacity of 16 kilobits organized as 2K words by 8 bits. The component supports parallel interface access with a maximum access time of 100 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 48-pin plastic dual in-line package (PDIP) designed for through-hole mounting. It functions within an ambient operating temperature range of 0°C to 70°C.

Feature Summary

• True dual-ported memory architecture enabling simultaneous independent access to the same memory location from two separate ports without bus contention.
• Automatic power-down functionality controlled by chip enable signals, allowing the internal circuitry to enter a low standby power mode when not actively accessed.
• Battery backup capability supporting data retention at voltages as low as 2V, ensuring data integrity during main power loss or transition.

Applications

• High-speed data buffering in systems requiring concurrent read/write operations from multiple processors.
• Slave dual-port RAM integration paired with master dual-port devices to expand word width in 16-bit or larger architectures.
• Real-time control applications necessitating fast, deterministic memory access and reliable data preservation.

Procurement Notes

Verify component authenticity and physical condition upon receipt, as this part is officially discontinued. Confirm that the 48-PDIP package dimensions match your existing PCB footprint requirements. Ensure your design accommodates the specific 4.5V to 5.5V supply voltage constraints. Check for RoHS compliance status if environmental regulations apply to your final assembly. Source only from authorized distributors to mitigate risks associated with obsolete inventory.

Selection Notes

Select this component when a system requires true dual-port SRAM with 16Kb capacity and 100ns speed in a through-hole package. It is suitable for designs needing battery-backed data retention and automatic power-down features. Consider alternative packages like PLCC or LCC if surface-mount technology is preferred. Evaluate compatibility with master dual-port controllers if expanding bus width. Verify thermal performance within the commercial temperature range for your specific enclosure.

Part Context

The 7142LA100P belongs to the 7142 family of high-speed dual-port SRAMs manufactured by Renesas Electronics. This series is engineered for applications demanding simultaneous access to shared memory resources. The 'LA' suffix typically denotes the commercial temperature grade and specific pinout configuration. The family supports various access speeds and packaging options to accommodate different system density and form factor requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available for this discontinued component. Designers should evaluate newer dual-port SRAM families from Renesas or other manufacturers that offer equivalent capacity and timing specifications. Verify pin-to-pin compatibility if attempting direct replacement in existing hardware layouts.