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IDT71256L35DB

Manufacturer: IDT

CMOS STATIC RAM 256K (32K x 8-BIT)

Partnumber Manufacturer Quantity Availability
IDT71256L35DB IDT 3000 In Stock

Description and Introduction

CMOS STATIC RAM 256K (32K x 8-BIT) The IDT71256L35DB is a high-speed 32K x 8-bit static RAM (SRAM) manufactured by Integrated Device Technology (IDT). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Density:** 32K x 8-bit (256Kb)  
- **Organization:** 32,768 words × 8 bits  
- **Access Time:** 35 ns  
- **Operating Voltage:** 5V ±10%  
- **Operating Temperature Range:** Commercial (0°C to +70°C)  
- **Package Type:** 28-pin DIP (Dual In-line Package)  
- **Pin Count:** 28  
- **I/O Type:** Common I/O (input/output shared)  
- **Standby Current (TTL):** 10 mA (typical)  
- **Operating Current:** 120 mA (typical)  

### **Descriptions:**
- The IDT71256L35DB is a CMOS static RAM designed for high-speed applications.  
- It features a fully static operation, meaning no refresh cycles are required.  
- The device is compatible with TTL levels for easy interfacing with microprocessors.  
- It includes a chip enable (CE) input for power-down mode, reducing standby power consumption.  

### **Features:**
- **High-Speed Performance:** 35 ns access time.  
- **Low Power Consumption:** CMOS technology ensures low standby and operating currents.  
- **Fully Static Operation:** No clock or refresh required.  
- **TTL-Compatible Inputs/Outputs:** Ensures compatibility with standard logic levels.  
- **Single 5V Power Supply:** Simplifies system design.  
- **Three-State Outputs:** Allows bus sharing in multi-processor systems.  
- **Industrial Standard Pinout:** Matches industry-standard 28-pin DIP SRAMs.  

This device is commonly used in embedded systems, industrial controls, telecommunications, and other applications requiring fast, low-power SRAM.

Application Scenarios & Design Considerations

CMOS STATIC RAM 256K (32K x 8-BIT)

Alternative Part Number

  • CY7C199-35PC --: 32K x 8 asynchronous SRAM with 35 ns access time, functionally equivalent to the IDT71256 and widely available as a drop-in replacement.
  • AS7C256-35PC --: 32K x 8 low-power CMOS SRAM with 35 ns speed grade, pin-compatible with the IDT71256 series and often used as a direct substitute.
  • IS61C256AL-35T --: 32K x 8 high-speed SRAM with 35 ns access time, same organization and interface, suitable alternative when the IDT part is unavailable.

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