IS42S81600D-6TL-TR

The IS42S81600D-6TL-TR is a 128-megabit synchronous dynamic random access memory (SDRAM) IC from ISSI, Integrated Silicon Solution Inc. Organized as 16 million words by 8 bits, this parallel interface DRAM operates at clock frequencies up to 166MHz with a 5.4ns access time. Designed for commercial temperature applications requiring cost-effective volatile memory, this SDRAM provides reliable data storage for embedded systems, communications equipment, and consumer electronics.

With a standard 3V to 3.6V supply voltage and industry-standard 54-pin TSOP II packaging, this memory IC integrates easily into existing designs requiring moderate-density volatile memory with synchronous operation.

Key Features

• Memory Architecture - 128Mbit capacity organized as 16M x 8, providing flexible addressing for applications requiring byte-wide data access with moderate density requirements.
• Clock Performance - Operates at frequencies up to 166MHz with 5.4ns access time, enabling synchronous operation for time-critical embedded systems and data buffering applications.
• Power Supply - 3V to 3.6V operating voltage provides compatibility with standard 3.3V logic families, simplifying power distribution design and reducing BOM complexity.
• Package Format - 54-pin TSOP II package (0.400" width) offers a space-efficient surface-mount footprint suitable for PCB designs with moderate density constraints.
• Temperature Range - Commercial grade 0°C to 70°C operating range addresses standard indoor applications and temperature-controlled environments.

Typical Applications

• Embedded Computing Systems - This SDRAM serves as main memory or data buffer in microcontroller-based systems where synchronous operation aligns with processor timing and moderate capacity meets application requirements without over-provisioning.
• Communications Equipment - In network switches, routers, and VoIP devices, this memory provides packet buffering and temporary data storage where the 166MHz clock frequency supports real-time data processing requirements.
• Consumer Electronics - Set-top boxes, digital televisions, and media players utilize this SDRAM for frame buffering and application data storage where cost-effectiveness and standard operating temperature range align with product requirements.
• Industrial Control Panels - HMI terminals and operator interfaces operating in climate-controlled facilities benefit from the parallel interface and byte-wide organization for managing display buffers and user interface data.

Unique Advantages

• Standard SDRAM Interface: Industry-standard synchronous DRAM protocol simplifies software development and enables migration from other SDRAM devices with minimal code changes.
• Byte-Wide Organization: 16M x 8 configuration efficiently supports applications requiring byte-addressable memory access without wasted data bus width.
• Proven TSOP II Packaging: Widely adopted package format ensures PCB footprint compatibility with established board layouts and automated assembly processes.
• Single Supply Voltage: 3.3V nominal operation reduces power supply complexity and aligns with standard logic levels common in embedded designs.
• Parallel Interface: Direct memory bus connection provides deterministic access timing without protocol overhead, suitable for real-time embedded applications.

Why Choose IS42S81600D-6TL-TR?

This SDRAM addresses commercial-grade applications requiring moderate memory capacity with synchronous operation. The 128Mbit density and byte-wide organization suit embedded systems where this capacity level matches application requirements without unnecessary cost or power overhead. The parallel interface and deterministic timing characteristics make it appropriate for designs where software teams require predictable memory access behavior.

Note: This product is marked as obsolete. For new designs, consult with ISSI or your distributor for current-generation replacement options offering similar specifications with ongoing manufacturing support.

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