AS4C16M16SB-7TCNTR

The AS4C16M16SB-7TCNTR is a 256Mbit synchronous dynamic random access memory (SDRAM) organized as 16M x 16 with LVTTL-compatible interface. This volatile memory solution operates at clock frequencies up to 143MHz with a 5.4ns access time, providing fast data throughput for applications requiring moderate-speed memory bandwidth. Designed for commercial temperature ranges (0°C to 70°C), this SDRAM suits embedded systems, networking equipment, and industrial control applications.

Key Features

• Memory Configuration - 256Mbit capacity organized as 16M words x 16 bits, offering flexible addressing for 16-bit data bus architectures.
• Performance Specifications - Operates at 143MHz clock frequency with 5.4ns access time and 14ns write cycle time, balancing speed with power efficiency.
• Interface Technology - LVTTL (Low Voltage TTL) interface ensures compatibility with 3.3V logic systems while maintaining noise immunity.
• Power Supply - Operates on 3V to 3.6V supply voltage, consistent with standard 3.3V embedded system designs.
• Package - 54-pin TSOP II (Thin Small-Outline Package) with 10.16mm width provides space-efficient PCB footprint for high-density designs.
• Temperature Range - Commercial grade 0°C to 70°C operating temperature suits standard indoor equipment environments.

Typical Applications

• Embedded Computing Systems - This SDRAM serves as main memory or buffer storage in embedded processors and microcontrollers where the 16-bit data bus width matches common embedded architectures, reducing interface complexity.
• Network Equipment - Routers, switches, and network interface cards utilize this memory for packet buffering and routing table storage, where the 256Mbit capacity accommodates moderate throughput requirements without over-provisioning.
• Industrial Control Systems - PLCs and automation controllers leverage this SDRAM for program execution and data logging, benefiting from the commercial temperature range suitable for controlled factory environments.
• Consumer Electronics - Set-top boxes, printers, and multimedia devices use this memory for frame buffering and temporary data storage, where the LVTTL interface simplifies integration with standard logic families.
• Test and Measurement Equipment - Oscilloscopes and data acquisition systems employ this SDRAM for waveform capture and sample storage, where the synchronous operation aligns with clocked data sampling architectures.

Unique Advantages

• Standard JEDEC Pinout: Follows industry-standard SDRAM pinout configurations, enabling direct replacement of compatible devices and reducing design validation time.
• Proven SDRAM Technology: Utilizes mature synchronous DRAM architecture with established supplier ecosystem and well-documented design guidelines.
• Single 3.3V Supply: Eliminates need for multiple supply rails compared to older DRAM generations, simplifying power distribution and reducing BOM cost.
• TSOP II Package Availability: Offers through-hole-compatible surface mount package widely supported by assembly houses and compatible with legacy board layouts.
• Commercial Temperature Qualification: Matches operating range of most commercial ICs, avoiding over-specification and associated cost premiums for standard indoor applications.
• Active Lifecycle Status: Currently in active production with established supply chain, reducing risk of obsolescence for ongoing designs.

Why Choose AS4C16M16SB-7TCNTR?

The AS4C16M16SB-7TCNTR delivers reliable, cost-effective memory for designs requiring moderate capacity and performance in the proven SDRAM architecture. Its LVTTL interface and 3.3V operation align with standard embedded system designs, while the 54-pin TSOP II package provides a balance between pin density and manufacturability. For engineers designing commercial-grade equipment where proven technology and supply chain stability matter, this SDRAM offers a practical solution backed by Alliance Memory's focus on memory products.

This memory IC suits applications where the design priority is compatibility with existing architectures, straightforward integration, and reliable sourcing rather than cutting-edge performance specifications. The active lifecycle status and standard package options support both new designs and long-term production requirements.

Get a Quote

Contact our sales team to discuss your memory requirements, receive pricing for your volume needs, and learn about availability for the AS4C16M16SB-7TCNTR. Our technical support can assist with integration guidance and design resources to help you successfully implement this SDRAM in your application.