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TMS4256-12SDL from TI,Texas Instruments

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TMS4256-12SDL

Manufacturer: TI

262,144-BIT DYNAMIC RANDOM-ACCESS MEMORIES

Partnumber Manufacturer Quantity Availability
TMS4256-12SDL,TMS425612SDL TI 885 In Stock

Description and Introduction

262,144-BIT DYNAMIC RANDOM-ACCESS MEMORIES The TMS4256-12SDL is a DRAM (Dynamic Random-Access Memory) chip manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Type:** 256K (262,144) x 1-bit Dynamic RAM  
- **Speed:** 120 ns (12 in the part number indicates 120 ns access time)  
- **Voltage:** Single +5V power supply  
- **Package:** 16-pin DIP (Dual In-line Package)  
- **Organization:** 256K words x 1-bit  
- **Refresh:** Requires 256 refresh cycles every 4 ms (standard DRAM refresh requirement)  
- **Operating Temperature Range:** Commercial (0°C to 70°C)  

### **Descriptions and Features:**  
- **High-Speed Operation:** 120 ns access time for fast data retrieval.  
- **Low Power Consumption:** Designed for efficient power usage in computing applications.  
- **Single +5V Supply:** Simplifies power requirements in system designs.  
- **Standard 16-Pin DIP Package:** Compatible with industry-standard memory sockets.  
- **Dynamic Storage:** Requires periodic refresh cycles to retain data.  
- **Wide Compatibility:** Used in early computer systems and industrial applications.  

This DRAM chip was commonly used in computing systems during the 1980s and early 1990s.

Application Scenarios & Design Considerations

262,144-BIT DYNAMIC RANDOM-ACCESS MEMORIES

Alternative Part Number

  • AS4C256K16F-12TC --: 256Kx16 DRAM with 120ns access time, functionally equivalent to the TMS4256 and available as a direct drop-in replacement.
  • MT4C4256-12 --: 256Kx4 DRAM in the same density and speed grade, pin-compatible with the TMS4256 series for legacy designs.
  • HM514256-12 --: 256Kx4 DRAM with 120ns access time, widely used as a second-source substitute for TMS4256 parts.

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