7134SA35CB

Overview

The Renesas Electronics Corporation 7134SA35CB is a high-speed, 4K x 8 Dual-Port Static Random Access Memory (SRAM) designed for systems requiring simultaneous access to the same memory location without on-chip hardware arbitration. It features fully asynchronous operation from either port and supports battery backup with 2V data retention capabilities. The device operates on a single 5V power supply (±10%) and includes an automatic power-down feature controlled by the Chip Enable signal to minimize standby power consumption. It is housed in a 48-pin CDIP-SB package.

Feature Summary

• True dual-ported memory cells enabling simultaneous independent access to identical memory locations from both ports.
• Fully asynchronous operation allowing flexible timing control without external clock synchronization requirements.
• Automatic power-down mode activated via Chip Enable signals to significantly reduce standby current consumption.
• Supports battery backup operations ensuring data retention at low voltage levels.

Applications

• Systems requiring contention handling through external arbitration logic.
• High-speed data buffering where wait states are intolerable.
• Parallel interface memory architectures needing simultaneous read/write access.
• Industrial equipment utilizing asynchronous dual-port RAM configurations.

Procurement Notes

Verify component authenticity and physical integrity upon receipt, as this part is officially discontinued. Confirm that the received units match the original specifications, particularly regarding the 48-pin CDIP-SB package and 35 ns access time. Ensure compatibility with existing system designs before integration, given the end-of-life status and potential availability of only legacy stock.

Selection Notes

Select this component when designing systems that require true dual-port functionality with asynchronous access to shared memory locations. It is suitable for applications where external arbitration handles simultaneous access contention rather than internal hardware mechanisms. Consider the specific package constraints and industrial temperature range requirements during the selection process.

Part Context

This component belongs to the 7134SA series of high-speed CMOS dual-port SRAMs manufactured by Renesas Electronics. The series is characterized by its ability to support simultaneous access to the same memory address from two independent ports. It is designed for use in complex digital systems where high-speed data transfer and parallel processing are critical requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available for this discontinued component. Designers should evaluate alternative dual-port SRAM solutions or redesign the system architecture to accommodate currently available memory devices.

FAQ

How does the 7134SA35CB handle simultaneous access to the same memory location?

The device allows simultaneous access to the same memory location from both ports. Systems must be designed to tolerate potential contention or utilize external arbitration logic to manage conflicts arising from concurrent reads or writes.

What is the power supply requirement for the 7134SA35CB?

The component requires a single TTL-compatible 5V power supply with a tolerance of ±10%.