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IDT71321LA55J from IDT

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IDT71321LA55J

Manufacturer: IDT

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

Partnumber Manufacturer Quantity Availability
IDT71321LA55J IDT 2023 In Stock

Description and Introduction

HIGH-SPEED 2K x 8 DUAL-PORT STATIC RAM WITH INTERRUPTS The **IDT71321LA55J** is a high-speed, low-power **16K x 8 Dual-Port Static RAM (SRAM)** manufactured by **Integrated Device Technology (IDT)**. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Organization:** 16K x 8 (131,072 bits)  
- **Supply Voltage:** 5V ±10%  
- **Access Time:** 55 ns  
- **Operating Current:** 120 mA (typical)  
- **Standby Current:** 10 mA (typical)  
- **Package:** 48-pin PLCC (Plastic Leaded Chip Carrier)  
- **Operating Temperature Range:** 0°C to +70°C (Commercial)  
- **I/O Compatibility:** TTL  

### **Descriptions:**  
- **Dual-Port Architecture:** Allows simultaneous access from both ports (left and right) for high-speed data transfer.  
- **Asynchronous Operation:** Independent control signals for each port (CE, OE, R/W).  
- **Bus Arbitration:** On-chip semaphore logic for inter-port communication.  
- **High-Speed Performance:** Optimized for applications requiring fast access times.  
- **Low Power Consumption:** CMOS technology for reduced power usage.  

### **Features:**  
- **True Dual-Port Memory:** Simultaneous read/write operations on both ports.  
- **Semaphore Flag Control:** Hardware handshaking for shared resource management.  
- **Interrupt Support:** Mailbox interrupt for inter-processor communication.  
- **Expandable Data Width:** Can be cascaded for wider word sizes.  
- **Industrial Standard Pinout:** Compatible with other dual-port RAMs.  

This device is commonly used in **multiprocessor systems, communications, and real-time data processing** where concurrent memory access is required.  

Would you like additional details on a specific aspect?

Application Scenarios & Design Considerations

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

Alternative Part Number

  • CY7C1321-55JC --: Dual-port SRAM with comparable 32Kx8 organization and 55 ns access time; Cypress is a direct second source for IDT dual-port memories and pin-compatible in the PLCC package.
  • IS61C3216-55J --: ISSI dual-port SRAM offering similar density and 55 ns speed grade, widely used as a drop-in replacement for IDT 71321 series in legacy designs.
  • AS7C3216-55JC --: Alliance Memory specializes in legacy SRAM replacements and provides a 32Kx8 dual-port device with 55 ns timing, suitable as a form-fit-function substitute for the IDT71321LA55J.
  • AS7C321-55JC --: Alliance Memory second-sources the IDT dual-port SRAM family with matching speed grade and package, offering a direct functional equivalent.
  • IS61C321-55J --: ISSI dual-port SRAM with comparable 55 ns timing and 2K x 8 density, suitable as an alternative with similar pinout.

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