IS42S16400J-7TL-TR

The IS42S16400J-7TL-TR is a 64-megabit synchronous dynamic random access memory (SDRAM) designed for embedded systems requiring moderate-density volatile memory. Organized as 4M x 16 bits, this parallel interface DRAM operates at clock frequencies up to 143 MHz with a 5.4ns access time, making it suitable for applications that balance performance with cost-effectiveness.

Built on proven SDRAM technology, this device operates from a standard 3V to 3.6V supply and supports commercial temperature ranges from 0°C to 70°C. The 54-TSOP II package provides a compact footprint for space-constrained designs.

Key Features

• Memory Architecture - 64Mbit total capacity organized as 4M x 16-bit words, providing flexible data access for 16-bit processors and controllers.
• SDRAM Performance - Synchronous operation at up to 143 MHz clock frequency with 5.4ns access time enables predictable timing for system designs.
• Parallel Interface - Direct parallel memory interface simplifies integration with microcontrollers, processors, and FPGAs without protocol overhead.
• Standard Voltage Operation - 3V to 3.6V supply voltage aligns with common embedded system power rails.
• Commercial Temperature Range - Rated for 0°C to 70°C ambient operation, suitable for indoor and climate-controlled environments.
• Compact 54-TSOP II Package - 0.400" (10.16mm) wide thin small outline package balances pin count with board space efficiency.

Typical Applications

• Embedded Controllers - This SDRAM serves as main memory for microcontrollers in consumer electronics, providing the volatile storage needed for program execution and data buffering.
• Industrial Control Systems - The commercial temperature rating makes this device suitable for HMI terminals, motor controllers, and building automation systems operating in climate-controlled facilities.
• Networking Equipment - The parallel interface and moderate bandwidth support packet buffering and routing table storage in small office and home networking devices.
• Point-of-Sale Terminals - This memory IC provides the working RAM for retail transaction systems where commercial temperature operation is sufficient.

Unique Advantages

• Proven Technology: SDRAM architecture offers mature, well-understood design characteristics that reduce development risk and simplify timing analysis.
• Parallel Interface Simplicity: Direct memory connection eliminates the need for serial-to-parallel conversion or complex protocol handling, reducing BOM cost and PCB complexity.
• Moderate Density Sweet Spot: 64Mbit capacity matches the memory requirements of many cost-sensitive embedded applications without over-provisioning.
• Standard Voltage Rail: 3.3V operation integrates directly with common system power supplies without level shifters or dedicated regulators.
• Compact Footprint: TSOP II packaging provides higher pin density than DIP alternatives while remaining compatible with standard assembly processes.

Why Choose IS42S16400J-7TL-TR?

This SDRAM is positioned for embedded designs where moderate memory capacity, predictable synchronous operation, and cost efficiency are primary concerns. The parallel interface and standard voltage operation simplify system integration for designers working with 16-bit processors or controllers. The commercial temperature rating makes this device appropriate for indoor equipment and climate-controlled installations.

Note: This device has an Obsolete lifecycle status. Designers should verify long-term availability with the manufacturer before committing to new designs. Existing production may benefit from identifying alternative components for future sourcing continuity.

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