BU9346K-E2

Overview

The BU9346K-E2 is a Dynamic RAM (DRAM) memory controller IC manufactured by ROHM Semiconductor. Designed for CD player applications, it operates within a supply voltage range of 2.7 V to 3.6 V. The component is classified as obsolete and is no longer in active production. It functions as an interface controller managing data flow between the system processor and external DRAM modules required for audio processing tasks.

Feature Summary

• Integrated dynamic RAM controller architecture optimized for audio playback systems
• Supports direct interfacing with external DRAM components for data buffering
• Designed specifically for compact disc digital audio signal processing workflows

Applications

• CD player mainboard logic control
• Digital audio workstation memory management
• Portable media device data storage interfaces

Procurement Notes

This component is officially listed as obsolete by the manufacturer. No new units are produced or distributed through standard channels. Verification of authenticity is critical when sourcing from secondary markets due to potential counterfeits. Availability is limited to existing stock held by distributors or salvage sources. Ensure compatibility with legacy system designs before procurement attempts.

Selection Notes

Selection is restricted to legacy maintenance or repair scenarios only. New product designs must utilize current ROHM memory controller alternatives. Verify pinout and electrical specifications against original schematics. Consider the long-term availability risks associated with obsolete semiconductor components for any new implementation.

Part Context

Part of ROHM's specialized audio interface IC lineup. Belongs to the BU93xx series of memory controllers. Historically used in consumer electronics manufacturing for optical disc players. Represents older generation semiconductor technology for DRAM interfacing.

Replacement Considerations

No direct public substitute part numbers are confirmed for this obsolete model. Engineers must design around existing inventory or modify circuit boards to accept modern equivalent controllers with compatible pinouts and voltage levels.