IS42S16400J-7BL

The IS42S16400J-7BL is a 64-megabit synchronous dynamic random access memory (SDRAM) IC from ISSI, organized as 4M x 16 and housed in a compact 54-pin TFBGA package. This volatile memory solution delivers reliable parallel data access with a 143MHz clock frequency and 5.4ns access time, making it suitable for embedded systems requiring moderate-speed memory with a straightforward parallel interface.

Key Features

• Memory Architecture - 64Mbit capacity organized as 4M words x 16 bits, providing flexible data storage for embedded applications requiring word-oriented access patterns.
• Synchronous Operation - SDRAM technology with 143MHz maximum clock frequency and 5.4ns access time enables predictable, clocked data transfers that simplify timing design in synchronous systems.
• Parallel Interface - Direct parallel data bus connection allows straightforward integration with microcontrollers, processors, and FPGAs without requiring serial protocol overhead.
• Power Supply - 3V to 3.6V operating voltage aligns with common 3.3V system power rails, reducing the need for additional voltage regulation in many designs.
• Compact Package - 54-pin TFBGA in an 8x8mm footprint provides a small PCB footprint while maintaining standard SDRAM functionality.
• Operating Temperature - 0°C to 70°C commercial temperature range supports standard indoor and controlled-environment applications.

Typical Applications

• Consumer Electronics - This SDRAM serves as working memory in set-top boxes, digital displays, and multimedia devices where moderate memory bandwidth supports video buffering and UI rendering at consumer price points.
• Embedded Systems - Microcontroller-based designs use this memory to expand available RAM for data processing, buffering sensor inputs, or storing configuration tables when on-chip memory is insufficient.
• Networking Equipment - The parallel interface provides packet buffering and routing table storage in switches and routers operating in climate-controlled network closets within the 0°C to 70°C range.
• Point-of-Sale Terminals - Retail and payment systems benefit from the reliable volatile memory for transaction processing and display management in indoor commercial environments.

Unique Advantages

• Simplified Integration: The parallel SDRAM interface eliminates the complexity of serial memory protocols, reducing firmware development time and accelerating time-to-market for processor-based designs.
• Predictable Performance: Synchronous clocking at up to 143MHz provides deterministic access timing that simplifies system timing analysis and reduces the risk of timing-related bugs.
• Standard Footprint: The TFBGA package follows industry-standard ball patterns, allowing designers to leverage existing PCB layouts and manufacturing processes without custom tooling.
• Established Technology: SDRAM architecture benefits from decades of industry adoption, extensive documentation, and broad controller support across microcontroller and FPGA platforms.
• Voltage Compatibility: Operating on common 3.3V rails reduces power supply complexity and allows direct connection to most modern digital logic without level shifting.

Why Choose IS42S16400J-7BL?

The IS42S16400J-7BL provides a proven memory solution for designs requiring moderate capacity and bandwidth in a compact form factor. Its parallel interface and synchronous operation make it particularly well-suited for projects where development speed and design simplicity are priorities, and where the system operates within controlled commercial temperature environments. While this part carries an obsolete lifecycle status, it may serve existing designs or applications where form-fit-function compatibility with legacy systems is required.

For new designs, engineers should verify long-term availability and consider alternative memory solutions that offer extended lifecycle support. Existing users of this component can leverage its established specifications and documentation for maintenance and manufacturing continuity.

Get a Quote

Contact our sales team to discuss pricing, availability, and technical support for the IS42S16400J-7BL. Our experts can help you evaluate whether this memory solution meets your project requirements or recommend alternative components for new designs requiring extended product lifecycles.