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IDT71256L100TDB from IDT

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IDT71256L100TDB

Manufacturer: IDT

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

Partnumber Manufacturer Quantity Availability
IDT71256L100TDB IDT 900 In Stock

Description and Introduction

CMOS STATIC RAM 256K (32K x 8-BIT) The IDT71256L100TDB 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)  
- **Speed:** 100ns access time  
- **Voltage Supply:** 5V ±10%  
- **Operating Temperature Range:** Commercial (0°C to +70°C)  
- **Package Type:** 28-pin 600-mil Plastic DIP (Dual In-line Package)  
- **I/O Type:** TTL-compatible  
- **Standby Current (Max):** 10mA (TTL standby)  
- **Operating Current (Max):** 120mA  

### **Descriptions:**
- The IDT71256L100TDB is a high-performance CMOS SRAM designed for applications requiring fast access times and low power consumption.  
- It features a fully static operation, meaning no refresh cycles are required.  
- The device is compatible with industry-standard 32K x 8 SRAM pinouts.  

### **Features:**
- **High-Speed Access:** 100ns maximum access time  
- **Low Power Consumption:**  
  - Active current: 120mA (max)  
  - TTL standby current: 10mA (max)  
  - CMOS standby current: 1mA (max)  
- **Fully Static Operation:** No clock or refresh required  
- **Single 5V Power Supply**  
- **Three-State Outputs** for bus compatibility  
- **Industrial Standard Pinout** for easy replacement  

This SRAM is commonly used in embedded systems, telecommunications, and other applications requiring fast and reliable memory access.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • CY7C199-15PC --: 32K x 8 asynchronous SRAM with comparable 15 ns access time and 5V TTL interface, a common drop-in for IDT71256 series in through-hole and PLCC designs.
  • IS61C256AH-15T --: 32K x 8 high-speed CMOS SRAM with 15 ns access time and 5V operation, functionally equivalent to the IDT71256L and widely available.
  • AS7C256A-15TC --: 32K x 8 asynchronous SRAM offered as a direct second-source for legacy IDT 71256 parts, with matching pinout and 15 ns speed grade.

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