AS4C4M16SB-6TIN

The AS4C4M16SB-6TIN is a 64Mbit synchronous DRAM (SDRAM) from Alliance Memory organized as 4M x 16 bits. This industrial-grade memory IC operates with an LVTTL interface and delivers reliable performance with a 166MHz clock frequency and 5ns access time.

Designed for applications requiring robust memory solutions across extended temperature ranges, this SDRAM operates from -40°C to 85°C, making it suitable for demanding industrial and embedded environments.

Key Features

• Memory Configuration - 64Mbit density organized as 4M x 16, providing a 16-bit wide data bus for efficient data transfers in embedded applications.
• High-Speed Performance - 166MHz clock frequency with 5ns access time enables fast synchronous data operations for responsive system designs.
• Industrial Temperature Range - Full operation from -40°C to 85°C (TA) ensures reliable performance in harsh environmental conditions without derating.
• LVTTL Interface - Low-voltage TTL compatible interface simplifies integration with modern processors and controllers operating at lower voltage levels.
• Power Supply - Operates from a 3V to 3.6V supply voltage, compatible with standard 3.3V system power rails.
• Compact Package - 54-TSOP II package with 0.400" (10.16mm) width provides a space-efficient surface-mount solution for dense PCB layouts.

Typical Applications

• Industrial Automation - This SDRAM provides reliable memory for PLCs, HMIs, and industrial controllers where extended temperature tolerance ensures consistent operation in factory floor environments with temperature fluctuations.
• Embedded Systems - The 4M x 16 organization and LVTTL interface make this device well-suited for embedded processors requiring moderate memory capacity with straightforward interfacing.
• Networking Equipment - Packet buffering and routing table storage in switches and routers benefit from the 166MHz performance and industrial temperature rating for equipment deployed in uncontrolled environments.
• Point-of-Sale Terminals - Retail and commercial systems operating in varied temperature conditions rely on industrial-grade memory for transaction processing reliability.

Unique Advantages

• Extended Temperature Operation: The -40°C to 85°C operating range eliminates the need for thermal management in most industrial applications, reducing system cost and complexity.
• Drop-In Compatibility: Standard SDRAM pinout and timing in the widely-used 54-TSOP II package enables straightforward design-in and second-sourcing flexibility.
• Active Lifecycle Status: Current production status ensures long-term availability for designs requiring extended product lifecycles.
• Optimized Access Timing: 5ns access time provides timing margin for reliable operation across the full temperature and voltage range.
• 3.3V Operation: Single 3.3V supply compatibility reduces power rail requirements and simplifies board-level power distribution.

Why Choose AS4C4M16SB-6TIN?

The AS4C4M16SB-6TIN addresses the needs of designers requiring proven SDRAM technology with industrial-grade reliability. Its combination of 64Mbit density, 166MHz performance, and extended temperature operation makes it appropriate for embedded and industrial applications where commercial-grade components may not meet environmental requirements.

Alliance Memory's focus on legacy-compatible memory products provides assurance of continued availability, making the AS4C4M16SB-6TIN a dependable choice for long-lifecycle industrial designs.

Request a Quote

Contact our sales team for pricing, availability, and technical support for the AS4C4M16SB-6TIN. Volume pricing and design-in assistance are available for qualified projects.