AS4C16M16S-7TCN
| Part Description |
IC DRAM 256MBIT PAR 54TSOP II |
|---|---|
| Quantity | 438 Available (as of May 5, 2026) |
| Product Category | Memory |
|---|---|
| Manufacturer | Alliance Memory, Inc. |
| Manufacturing Status | Obsolete |
| Manufacturer Standard Lead Time | RFQ |
| Datasheet |
Specifications & Environmental
| Device Package | 54-TSOP II | Memory Format | DRAM | Technology | SDRAM | ||
|---|---|---|---|---|---|---|---|
| Memory Size | 256 Mbit | Access Time | 5.4 ns | Grade | Commercial | ||
| Clock Frequency | 143 MHz | Voltage | 3V ~ 3.6V | Memory Type | Volatile | ||
| Operating Temperature | 0°C ~ 70°C (TA) | Write Cycle Time Word Page | 14 ns | Packaging | 54-TSOP (0.400", 10.16mm Width) | ||
| Mounting Method | Volatile | Memory Interface | Parallel | Memory Organization | 16M x 16 | ||
| Moisture Sensitivity Level | 3 (168 Hours) | RoHS Compliance | ROHS3 Compliant | REACH Compliance | REACH Unaffected | ||
| Qualification | N/A | ECCN | EAR99 | HTS Code | 8542.32.0024 |
Overview of AS4C16M16S-7TCN - 256Mbit SDRAM Memory IC
The AS4C16M16S-7TCN from Alliance Memory, Inc. is a 256-megabit synchronous dynamic random access memory (SDRAM) chip organized as 16 million words by 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 requiring fast, volatile memory storage. Packaged in a compact 54-pin TSOP II form factor, this memory IC operates from a 3V to 3.6V supply and is designed for commercial temperature environments.
Key Features
- Memory Configuration - 256Mbit capacity organized as 16M x 16, providing flexible word-oriented access for 16-bit data bus systems.
- High-Speed Operation - 143 MHz clock frequency with 5.4ns access time enables fast data throughput for time-sensitive applications.
- SDRAM Technology - Synchronous operation allows predictable timing and efficient integration with modern microprocessors and controllers.
- Standard Voltage Operation - 3V to 3.6V supply voltage compatible with common embedded system power rails.
- Compact Package - 54-pin TSOP II (10.16mm width) offers a space-efficient footprint for dense PCB layouts.
- Commercial Temperature Range - Operates reliably from 0°C to 70°C for standard indoor applications.
Typical Applications
- Consumer Electronics - This SDRAM provides working memory for set-top boxes, digital TVs, and multimedia devices where the 143 MHz operation supports smooth video processing and user interface responsiveness.
- Networking Equipment - The parallel interface and 256Mbit capacity make this memory suitable for routers, switches, and network appliances that buffer data packets and maintain routing tables.
- Embedded Computing - Industrial controllers and embedded systems utilize this SDRAM for program execution and data buffering where the commercial temperature range meets typical operating conditions.
- Printer and Imaging Systems - The high-speed access supports image buffering and processing in printers, scanners, and copiers where fast data handling improves throughput.
- Test and Measurement - Instrumentation equipment uses this memory for data acquisition and waveform storage where the 16-bit organization aligns with ADC architectures.
Unique Advantages
- Proven SDRAM Architecture: Mature synchronous DRAM technology offers predictable performance and broad ecosystem support for quick design integration.
- Parallel Interface Simplicity: Direct memory access without complex serial protocols simplifies firmware development and reduces system latency.
- Word-Aligned Organization: 16M x 16 structure matches common 16-bit processor architectures, eliminating the need for data width conversion logic.
- Commercial Temperature Rating: 0°C to 70°C operating range covers office, indoor industrial, and consumer environments without requiring extended-temperature premium pricing.
- Compact TSOP II Footprint: Standard surface-mount package enables automated assembly and supports high-density board designs.
- 3.3V Standard Supply: Single voltage rail operation simplifies power distribution and reduces BOM complexity compared to split-voltage memory solutions.
Why Choose AS4C16M16S-7TCN?
The AS4C16M16S-7TCN is positioned for commercial-grade embedded systems requiring fast, volatile working memory with parallel access. Its 143 MHz operation and 5.4ns access time deliver performance suitable for real-time data processing, while the compact TSOP II package fits space-constrained designs. The 16M x 16 organization aligns naturally with 16-bit microcontrollers and DSPs, reducing interface complexity.
This memory IC suits designs where standard commercial temperature ratings are sufficient and cost-effectiveness is prioritized. The mature SDRAM technology provides a reliable foundation for products in networking, consumer electronics, and industrial control where proven performance matters more than cutting-edge density.
Request a Quote
For pricing, availability, and technical support for the AS4C16M16S-7TCN, contact our sales team. We can assist with volume requirements, lead times, and application-specific questions to help ensure this memory IC meets your design needs.
