IS45S16400J-7TLA2
| Part Description |
IC DRAM 64MBIT PAR 54TSOP II |
|---|---|
| Quantity | 53 Available (as of May 19, 2026) |
| Product Category | Memory |
|---|---|
| Manufacturer | Integrated Silicon Solution Inc |
| Manufacturing Status | Obsolete |
| Manufacturer Standard Lead Time | RFQ |
| Datasheet |
Specifications & Environmental
| Device Package | 54-TSOP II | Memory Format | DRAM | Technology | SDRAM | ||
|---|---|---|---|---|---|---|---|
| Memory Size | 64 Mbit | Access Time | 5.4 ns | Grade | Automotive | ||
| Clock Frequency | 143 MHz | Voltage | 3V ~ 3.6V | Memory Type | Volatile | ||
| Operating Temperature | -40°C ~ 105°C (TA) | Write Cycle Time Word Page | N/A | Packaging | 54-TSOP (0.400", 10.16mm Width) | ||
| Mounting Method | Volatile | Memory Interface | Parallel | Memory Organization | 4M x 16 | ||
| Moisture Sensitivity Level | 3 (168 Hours) | RoHS Compliance | ROHS3 Compliant | REACH Compliance | REACH Unaffected | ||
| Qualification | N/A | ECCN | EAR99 | HTS Code | 8542.32.0002 |
Overview of IS45S16400J-7TLA2 - 64Mbit Parallel SDRAM
The IS45S16400J-7TLA2 is a 64Mbit synchronous dynamic RAM organized as 4M x 16, designed for applications requiring high-speed memory access with moderate density. This SDRAM operates at up to 143MHz clock frequency with a 5.4ns access time, making it suitable for embedded systems and industrial equipment. Built on proven SDRAM technology, it provides reliable volatile memory storage with a parallel interface for straightforward integration.
Key Features
- Memory Configuration - 64Mbit capacity organized as 4M x 16, providing flexible word-level access for 16-bit data bus architectures.
- Performance Specifications - Operates at 143MHz clock frequency with 5.4ns access time, delivering responsive memory performance for time-sensitive applications.
- Power Supply - Operates from 3V to 3.6V supply voltage, compatible with standard 3.3V logic systems and reducing power design complexity.
- Extended Temperature Range - Rated for -40°C to 105°C ambient temperature operation, suitable for industrial environments with variable thermal conditions.
- Package Format - Available in 54-pin TSOP II package with 10.16mm width, offering a space-efficient surface-mount footprint for compact board layouts.
Typical Applications
- Industrial Control Systems - This SDRAM provides working memory for PLCs, industrial controllers, and HMI panels where the extended temperature range ensures reliable operation across factory floor conditions.
- Embedded Computing - The parallel interface and moderate density make this component suitable for embedded processors and microcontroller-based systems that require external memory expansion with predictable access times.
- Instrumentation and Test Equipment - The 143MHz operation and 16-bit organization support data buffering and processing in measurement devices where consistent performance across temperature variations is important.
- Legacy System Maintenance - As an obsolete component, this SDRAM serves as a replacement part for maintaining existing equipment designs that specified parallel SDRAM architecture.
Unique Advantages
- Wide Temperature Tolerance: The -40°C to 105°C operating range reduces the need for additional thermal management in industrial installations, lowering system complexity.
- Standard Parallel Interface: Direct memory bus connection eliminates protocol overhead and simplifies firmware development compared to serial memory alternatives.
- Proven SDRAM Technology: Synchronous operation provides deterministic timing behavior, making memory access patterns predictable for real-time system design.
- Moderate Density Point: The 64Mbit capacity balances cost and capability for applications that need more than SRAM but less than higher-density DRAM solutions.
- 3.3V Supply Compatibility: Operates directly from standard 3.3V rails without level shifters, simplifying power distribution and board layout.
Why Choose IS45S16400J-7TLA2?
This SDRAM is positioned for maintenance and repair of existing industrial and embedded systems that were designed around parallel SDRAM technology. The extended temperature rating and moderate density make it appropriate for control applications where environmental conditions vary beyond commercial limits. While marked as obsolete, it serves engineers supporting legacy equipment where memory replacement is required.
For designs requiring long-term availability, consult with ISSI or authorized distributors regarding alternative components with active lifecycle status and broader availability.
Get a Quote
Contact our technical sales team to check availability and pricing for the IS45S16400J-7TLA2. Our specialists can also recommend alternative memory solutions for new designs or discuss volume requirements for system maintenance programs.
