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TMS4256-12NL Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
TMS4256-12NLTI322Yes

### **TMS4256-12NL Manufacturer: Texas Instruments (TI)** #### **Specifications:** - **Part Number:** TMS4256-12NL - **Type:** Dynamic RAM (DRAM) - **Density:** 256K (262,144 bits) - **Organization:** 64K x 4 - **Access Time:** 120 ns (12 in

TMS4256-12NL Manufacturer: Texas Instruments (TI)

#### Specifications:

  • Part Number: TMS4256-12NL
  • Type: Dynamic RAM (DRAM)
  • Density: 256K (262,144 bits)
  • Organization: 64K x 4
  • Access Time: 120 ns (12 in part number denotes speed grade)
  • Voltage Supply: +5V
  • Package: 18-pin DIP (Dual In-line Package)
  • Operating Temperature Range: Commercial (0°C to +70°C)
  • Technology: NMOS

#### Descriptions:

The TMS4256-12NL is a 256K dynamic RAM (DRAM) chip from Texas Instruments, organized as 64K words by 4 bits. It operates with a single +5V power supply and features a 120 ns access time. This NMOS-based memory chip is designed for use in early computer and embedded systems requiring moderate-speed DRAM storage.

#### Features:

  • 64K x 4 organization
  • Single +5V power supply
  • 120 ns access time (TMS4256-12NL)
  • 18-pin DIP package
  • Dynamic refresh required (typical 2ms refresh interval)
  • Fully static operation possible with RAS-only refresh
  • TTL-compatible inputs and outputs
  • Low power consumption in standby mode

This part is now considered obsolete but was widely used in vintage computing and industrial applications.

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