IS42S16160B-7T-TR

IC DRAM 256MBIT PAR 54TSOP II
Part Description

IC DRAM 256MBIT PAR 54TSOP II

Quantity 1,257 Available (as of May 5, 2026)
Product CategoryMemory
ManufacturerIntegrated Silicon Solution Inc
Manufacturing StatusObsolete
Manufacturer Standard Lead TimeRFQ
Datasheet

Specifications & Environmental

Device Package54-TSOP IIMemory FormatDRAMTechnologySDRAM
Memory Size256 MbitAccess Time5.4 nsGradeCommercial
Clock Frequency143 MHzVoltage3V ~ 3.6VMemory TypeVolatile
Operating Temperature0°C ~ 70°C (TA)Write Cycle Time Word PageN/APackaging54-TSOP (0.400", 10.16mm Width)
Mounting MethodVolatileMemory InterfaceParallelMemory Organization16M x 16
Moisture Sensitivity Level3 (168 Hours)RoHS ComplianceROHS3 CompliantREACH ComplianceREACH Unaffected
QualificationN/AECCNEAR99HTS Code8542.32.0024

Overview of IS42S16160B-7T-TR - 256Mbit Synchronous DRAM

The IS42S16160B-7T-TR is a 256-megabit synchronous DRAM organized as 16M x 16, designed for systems requiring reliable parallel memory with straightforward integration. Built on proven SDRAM technology, this component operates at clock frequencies up to 143 MHz with a 5.4 ns access time, making it suitable for embedded applications where predictable performance and cost-effective memory expansion are priorities.

This TSOP II packaged memory device offers designers a compact footprint with standard 3.3V operation, allowing for easy integration into existing designs while maintaining compatibility with conventional parallel memory interfaces.

Key Features

  • Memory Architecture - 256Mbit capacity organized as 16M x 16 configuration provides flexible word-wide data access for embedded systems requiring straightforward parallel addressing.
  • Clock Performance - Operates at clock frequencies up to 143 MHz with 5.4 ns access time, delivering consistent throughput for applications with moderate bandwidth requirements.
  • Power Supply - Single 3.3V supply (3V to 3.6V range) simplifies power distribution and reduces system complexity compared to multi-rail memory solutions.
  • Package - 54-pin TSOP II package (0.400", 10.16mm width) offers a space-efficient form factor suitable for dense PCB layouts in embedded designs.
  • Operating Range - Commercial temperature range of 0°C to 70°C supports standard indoor and temperature-controlled environments.

Typical Applications

  • Legacy System Support - This SDRAM provides a replacement or upgrade path for older embedded systems originally designed around parallel memory architectures, allowing manufacturers to extend product lifecycles without complete redesigns.
  • Set-Top Boxes and Consumer Electronics - The moderate bandwidth and 3.3V operation make this memory suitable for video processing, UI buffering, and firmware storage in consumer devices operating in controlled temperature environments.
  • Office Equipment - Printers, copiers, and multifunction devices benefit from the reliable parallel interface and sufficient capacity for document buffering, page rendering, and embedded controller operations.
  • Legacy Industrial Controls - Systems requiring parallel memory interfaces in standard temperature environments can utilize this SDRAM for data logging, HMI buffering, and controller memory where newer DDR technologies are unnecessary.

Unique Advantages

  • Simplified Design Integration: Standard parallel interface eliminates complex routing and impedance matching requirements associated with high-speed serial memory, reducing PCB design time and manufacturing costs.
  • Single Voltage Operation: 3.3V-only power requirement reduces power supply complexity and component count compared to memories requiring multiple voltage rails.
  • Proven Technology Platform: SDRAM architecture has decades of field history, offering predictable behavior and reducing design risk for projects requiring stable, well-understood memory solutions.
  • Compact Footprint: TSOP II packaging provides good density for parallel memory while maintaining hand-solderable pitch for prototyping and small-volume production.
  • Cost-Effective Capacity: 256Mbit organization delivers sufficient memory for many embedded applications at a price point typically lower than newer memory technologies.

Why Choose IS42S16160B-7T-TR?

This SDRAM component is positioned for designs where parallel memory interfaces align with system architecture requirements, particularly in legacy product support, cost-sensitive consumer electronics, and established industrial platforms. Engineers working on products with existing parallel memory buses will find the IS42S16160B-7T-TR offers a straightforward upgrade path without requiring interface redesign.

Note that this component carries an Obsolete lifecycle status. Designers should evaluate current availability and consider long-term supply planning or alternative memory solutions for new designs with extended production timelines. For existing products requiring this specific part number, this component may serve as a bridge solution while transitioning to current-generation memory technologies.

Request a Quote

Contact our technical sales team for pricing, availability information, and volume discounts on the IS42S16160B-7T-TR. Our engineers can assist with alternative memory solutions if this component does not meet your specific requirements or supply chain needs.

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