IS42S32400B-7TLI-TR

The IS42S32400B-7TLI-TR is a 128-megabit SDRAM (Synchronous Dynamic Random Access Memory) from ISSI, Integrated Silicon Solution Inc. Organized as 4M x 32, this volatile memory IC operates at a 143 MHz clock frequency and delivers 5.4ns access time. Designed for parallel interfacing and packaged in an 86-TSOP II form factor, this memory solution supports applications requiring moderate-speed data buffering and storage across an extended temperature range.

With a 3V to 3.6V supply voltage range and -40°C to 85°C operating temperature, the IS42S32400B-7TLI-TR provides reliable performance in industrial and commercial computing environments where temperature variations are common.

Key Features

• Memory Architecture - 128 megabit capacity organized as 4M words x 32 bits, providing flexible data word widths for system design.
• Clock and Access Performance - 143 MHz clock frequency with 5.4ns access time enables responsive read/write operations for time-sensitive applications.
• Power Supply - Standard 3V to 3.6V operation simplifies integration into common digital systems and reduces power supply complexity.
• Temperature Range - Extended -40°C to 85°C operation ensures reliability across industrial and commercial environments.
• Package - 86-TSOP II (0.400", 10.16mm width) surface-mount package optimized for compact PCB layouts.
• Interface - Parallel memory interface with SDRAM technology for straightforward integration with standard memory controllers.

Typical Applications

• Industrial Control Systems - This SDRAM serves as program and data memory in PLCs and industrial controllers where the extended temperature range supports operation in factory floor environments with varying thermal conditions.
• Embedded Computing - The parallel interface and moderate clock speed make this memory suitable for embedded processors in commercial equipment requiring temporary data storage and buffering.
• Data Acquisition Systems - The 4M x 32 organization provides adequate buffer memory for data loggers and measurement instruments that capture and process sensor data before storage or transmission.
• Legacy System Support - As an obsolete component, this SDRAM is valuable for maintaining and repairing existing equipment that was originally designed with this specific memory IC.

Unique Advantages

• Extended Temperature Operation: The -40°C to 85°C range supports deployment in industrial environments without additional thermal management, reducing system complexity.
• Standard Supply Voltage: 3.3V operation aligns with common digital logic levels, simplifying power distribution and eliminating the need for additional voltage regulators.
• Proven SDRAM Technology: Synchronous DRAM architecture ensures predictable timing characteristics and compatibility with established memory controller designs.
• Compact Surface-Mount Package: The 86-TSOP II footprint enables higher component density on PCBs compared to through-hole alternatives.
• Parallel Interface Simplicity: Direct memory access without complex serial protocols reduces controller overhead and enables straightforward firmware development.

Why Choose IS42S32400B-7TLI-TR?

The IS42S32400B-7TLI-TR is positioned for legacy system maintenance and repair applications. As an obsolete component, it serves engineers who need to source exact replacements for existing designs that cannot be easily redesigned. The combination of 128Mbit capacity, parallel SDRAM interface, and extended temperature range makes it suitable for industrial control and embedded applications from its original design era.

For organizations maintaining long-lifecycle products or critical infrastructure built with this memory IC, securing available inventory ensures continued operation and serviceability without costly system redesigns.

Get Availability and Pricing

Contact our sales team to check current stock availability and request a quote for the IS42S32400B-7TLI-TR. Our technical support can also assist with cross-reference alternatives if you are considering design updates or need guidance on replacement options for obsolete components.