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IDT71421SA25J from IDT

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IDT71421SA25J

Manufacturer: IDT

HIGH-SPEED 2K x 8 DUAL-PORT STATIC RAM WITH INTERRUPTS

Partnumber Manufacturer Quantity Availability
IDT71421SA25J IDT 806 In Stock

Description and Introduction

HIGH-SPEED 2K x 8 DUAL-PORT STATIC RAM WITH INTERRUPTS The **IDT71421SA25J** is a high-speed, low-power 16K x 8 dual-port static RAM (SRAM) manufactured by **IDT (Integrated Device Technology)**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Memory Size:** 16K x 8 (131,072 bits)  
- **Organization:** Dual-port (independent access for both ports)  
- **Supply Voltage:** 5V ±10%  
- **Access Time:** 25 ns  
- **Operating Current:** 120 mA (typical)  
- **Standby Current:** 10 mA (typical)  
- **Package:** 48-pin Ceramic DIP (Dual In-line Package)  
- **Temperature Range:** Commercial (0°C to +70°C)  

### **Descriptions:**
- The **IDT71421SA25J** is a **dual-port SRAM**, allowing simultaneous read/write operations from two independent buses.  
- It is designed for **high-performance applications** requiring fast data transfer between processors or systems.  
- The device features **non-volatile** operation, meaning data is retained as long as power is supplied.  
- It includes **on-chip arbitration logic** to prevent data corruption during simultaneous access to the same memory location.  

### **Features:**
1. **True Dual-Port Operation** – Independent read/write access on both ports.  
2. **High-Speed Access** – 25 ns access time for fast data processing.  
3. **Low Power Consumption** – Optimized for power-sensitive applications.  
4. **Bus Compatibility** – Direct interface with most microprocessors.  
5. **Automatic Power-Down** – Reduces power consumption when inactive.  
6. **Interrupt Flag** – Supports mailbox communication between ports.  
7. **Semaphore Signaling** – Hardware handshake for shared resource management.  
8. **Industrial-Grade Reliability** – Robust design for stable operation.  

This device is commonly used in **multiprocessor systems, communication buffers, and data-sharing applications**.  

Would you like additional details on pin configurations or timing diagrams?

Application Scenarios & Design Considerations

HIGH-SPEED 2K x 8 DUAL-PORT STATIC RAM WITH INTERRUPTS

Alternative Part Number

  • CY7C421-25JXC --: Pin-compatible 4K x 9 asynchronous FIFO in a PLCC package with 25 ns access time, directly interchangeable with the IDT71421SA25J.
  • SN74ACT7804-25FN --: Similar 4K x 9 FIFO with 25 ns speed grade and PLCC footprint, offering comparable functionality as a drop-in alternative.
  • 72V04L25J --: Same 4K x 9 FIFO architecture and 25 ns timing from the IDT/Renesas FIFO family, usable as a functional replacement with matching pinout.
  • CY7C421-25JC --: Pin-compatible 4K x 9 asynchronous FIFO with 25 ns access time, functionally equivalent to the IDT71421SA25J.
  • SN74ACT7803-25PN --: 4K x 9 FIFO memory with 25 ns speed grade, similar architecture and interface, suitable as a drop-in functional replacement.
  • IDT7203L25J --: Same vendor FIFO family with 25 ns access time and compatible 4K x 9 organization, offering a close electrical match.

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