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IDT71256L35DB

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

Partnumber Manufacturer Quantity Availability
IDT71256L35DB 2500 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).  

### **Key Specifications:**  
- **Organization:** 32K x 8-bit  
- **Access Time:** 35 ns  
- **Operating Voltage:** 5V ±10%  
- **Power Consumption:**  
  - Active: 550 mW (typical)  
  - Standby: 5.5 mW (typical)  
- **Operating Temperature Range:** 0°C to 70°C (commercial)  
- **Package Type:** 28-pin DIP (Dual In-line Package)  
- **Pin Configuration:** Industry-standard JEDEC-compatible  

### **Features:**  
- **High-Speed Performance:** 35 ns access time  
- **Low Power Consumption:** CMOS technology for reduced power usage  
- **TTL-Compatible Inputs/Outputs:** Ensures compatibility with TTL logic levels  
- **Fully Static Operation:** No refresh cycles required  
- **Three-State Outputs:** Allows bus sharing in multi-processor systems  
- **Single 5V Power Supply:** Simplifies system design  

### **Applications:**  
- Embedded systems  
- Networking equipment  
- Industrial controls  
- Telecommunications  
- Cache memory applications  

This SRAM is designed for high-performance applications requiring fast access times and low power consumption.

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.
Partnumber Manufacturer Quantity Availability
IDT71256L35DB IDT 500 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 IDT71256L 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 IDT71256L and offered as a direct second-source option.
  • IS61C256AL-35T --: 32K x 8 high-speed CMOS SRAM with 35 ns access time, matching the density and speed of the original IDT part for similar memory socket applications.

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