AS4C16M16SB-6TIN
| Part Description |
IC DRAM 256MBIT LVTTL 54TSOP II |
|---|---|
| Quantity | 1,744 Available (as of May 5, 2026) |
| Product Category | Memory |
|---|---|
| Manufacturer | Alliance Memory, Inc. |
| Manufacturing Status | Active |
| Manufacturer Standard Lead Time | 4 Weeks |
| Datasheet |
Specifications & Environmental
| Device Package | 54-TSOP II | Memory Format | DRAM | Technology | SDRAM | ||
|---|---|---|---|---|---|---|---|
| Memory Size | 256 Mbit | Access Time | 5 ns | Grade | Industrial | ||
| Clock Frequency | 166 MHz | Voltage | 3V ~ 3.6V | Memory Type | Volatile | ||
| Operating Temperature | -40°C ~ 85°C (TA) | Write Cycle Time Word Page | 12 ns | Packaging | 54-TSOP (0.400", 10.16mm Width) | ||
| Mounting Method | Volatile | Memory Interface | LVTTL | 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 | 8542.32.0028 |
Overview of AS4C16M16SB-6TIN - 256Mbit LVTTL SDRAM
The AS4C16M16SB-6TIN is a 256Mbit synchronous DRAM (SDRAM) from Alliance Memory, organized as 16M x 16 bits. This LVTTL-compatible memory device operates at clock frequencies up to 166MHz with a 5ns access time, delivering high-bandwidth data transfer for embedded systems and computing applications.
Designed for industrial-grade reliability, this SDRAM features an extended operating temperature range of -40°C to 85°C, making it suitable for demanding environments where thermal stability is critical.
Key Features
- Memory Configuration - 256Mbit capacity organized as 16M x 16, providing a 16-bit wide data bus for efficient parallel data access.
- High-Speed Operation - 166MHz clock frequency with 5ns access time and 12ns write cycle time enables high-throughput memory operations.
- LVTTL Interface - Low-voltage TTL compatibility simplifies integration with 3.3V logic systems and reduces power consumption.
- Wide Supply Voltage Range - Operates from 3V to 3.6V, providing flexibility in power supply design and tolerance for voltage variations.
- Extended Temperature Range - Industrial operating range of -40°C to 85°C ensures reliable performance in harsh thermal environments.
- Compact Package - 54-TSOP II package with 10.16mm width offers a space-efficient footprint for board-constrained designs.
Typical Applications
- Industrial Automation - This SDRAM provides reliable memory storage for PLCs, HMIs, and industrial controllers where the extended temperature range ensures consistent operation in factory floor environments.
- Networking Equipment - The 166MHz clock speed and 16-bit data bus support packet buffering and routing table storage in switches, routers, and access points.
- Embedded Computing - Single-board computers and embedded processors benefit from the 256Mbit capacity and LVTTL interface for system memory and data caching.
- Point-of-Sale Systems - Retail terminals and kiosks utilize this memory for transaction processing and display buffering in environments with varying temperatures.
- Medical Devices - Portable and bench-top medical instruments leverage the industrial temperature rating for reliable data storage in clinical settings.
Unique Advantages
- Long-Term Availability: Alliance Memory specializes in providing extended lifecycle support for memory products, reducing redesign risk and ensuring supply continuity.
- Drop-In Compatibility: Standard SDRAM pinout and timing parameters enable seamless replacement of equivalent devices from other manufacturers.
- Industrial-Grade Reliability: The -40°C to 85°C temperature range exceeds commercial specifications, supporting deployment in challenging operating conditions.
- Simplified Power Design: The 3V to 3.6V supply range accommodates standard 3.3V rails with margin for regulation tolerance.
- Cost-Effective Performance: The 166MHz operation and 5ns access time deliver competitive bandwidth without premium pricing.
Why Choose AS4C16M16SB-6TIN?
The AS4C16M16SB-6TIN represents a reliable choice for designers requiring proven SDRAM technology with industrial-grade specifications. Its combination of 256Mbit capacity, 166MHz clock speed, and extended temperature range addresses the needs of embedded systems that must operate reliably across demanding thermal conditions.
For applications where longevity and supply chain stability matter, Alliance Memory's commitment to extended product lifecycles provides assurance that this memory solution will remain available to support production volumes over time.
Call to Action
Contact our sales team to request a quote for the AS4C16M16SB-6TIN or to discuss volume pricing and lead times for your project requirements.
