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IDT71256S45DB

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

Partnumber Manufacturer Quantity Availability
IDT71256S45DB 146 In Stock

Description and Introduction

CMOS STATIC RAM 256K (32K x 8-BIT) The IDT71256S45DB 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:** 45 ns  
- **Operating Voltage:** 5V ±10%  
- **Operating Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)  
- **Package:** 28-pin DIP (Dual In-line Package)  
- **Pin Compatibility:** Industry-standard 28-pin SRAM pinout  
- **Power Consumption:**  
  - Active: 550 mW (typical)  
  - Standby: 55 mW (typical)  

### **Features:**  
- **High-Speed Performance:** 45 ns access time  
- **Low Power Consumption:** CMOS technology for reduced power usage  
- **Fully Static Operation:** No clock or refresh required  
- **TTL-Compatible Inputs/Outputs:** Ensures compatibility with standard logic levels  
- **Three-State Outputs:** Allows for bus-oriented applications  
- **Single 5V Power Supply:** Simplified power requirements  

### **Applications:**  
- Embedded systems  
- Cache memory  
- Networking equipment  
- Industrial control systems  

This SRAM is designed for applications requiring fast, reliable, and low-power memory storage.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • CY7C199-45PC --: 32K x 8 asynchronous SRAM with 45 ns access time, functionally equivalent to the IDT71256 and widely available as a drop-in replacement.
  • AS7C256-45PC --: 32K x 8 low-power CMOS SRAM with 45 ns speed grade, pin-compatible with the IDT71256 series and often used as a direct substitute.
  • IS61C256AH-45N --: 32K x 8 high-speed SRAM with 45 ns access time, same organization and interface, suitable as an alternative when the IDT part is unavailable.
Partnumber Manufacturer Quantity Availability
IDT71256S45DB IDT 300 In Stock

Description and Introduction

CMOS STATIC RAM 256K (32K x 8-BIT) The IDT71256S45DB 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:** 256Kb (32K x 8-bit)  
- **Access Time:** 45 ns  
- **Operating Voltage:** 5V ±10%  
- **Operating Temperature Range:** Commercial (0°C to +70°C)  
- **Package:** 28-pin SOIC (Small Outline Integrated Circuit)  
- **I/O Type:** Common I/O (input/output shared)  
- **Power Consumption:**  
  - Active: 450 mW (typical)  
  - Standby: 55 mW (typical)  

### **Descriptions:**
- The IDT71256S45DB is a CMOS SRAM designed for high-speed applications requiring low power consumption.  
- It features a fully static operation, meaning no refresh cycles are required.  
- The device is compatible with TTL levels for easy interfacing with microprocessors and other logic circuits.  

### **Features:**
- **High-Speed Performance:** 45 ns access time.  
- **Low Power Consumption:** Optimized for both active and standby modes.  
- **Single 5V Power Supply:** Simplifies system design.  
- **Tri-State Outputs:** Allows direct connection to a common bus.  
- **Fully Static Operation:** No clock or refresh needed.  
- **TTL-Compatible Inputs/Outputs:** Ensures broad compatibility.  
- **Industrial-Standard Pinout:** Matches other 32K x 8 SRAMs for easy replacement.  

This SRAM is commonly used in embedded systems, networking equipment, and other applications requiring fast, low-power memory.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • CY7C199-45PC --: 32K x 8 asynchronous SRAM with 45 ns access time, pin-compatible with the IDT71256S45DB and widely available as a drop-in replacement.
  • AS7C256-45PC --: 32K x 8 low-power CMOS SRAM with 45 ns speed grade, functionally equivalent and commonly used as a second-source substitute for the IDT71256 series.
  • IS61C256AH-45N --: 32K x 8 high-speed SRAM with 45 ns access time, same organization and interface, suitable as an alternative when the original IDT part is unavailable.

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