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IDT7140SA55J from IDT

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IDT7140SA55J

Manufacturer: IDT

HIGH-SPEED 1K x 8 DUAL-PORT STATIC RAM
Partnumber Manufacturer Quantity Availability
IDT7140SA55J IDT 3269 In Stock

Description and Introduction

HIGH-SPEED 1K x 8 DUAL-PORT STATIC RAM The **IDT7140SA55J** is a high-speed, low-power dual-port static RAM (SRAM) manufactured by **Integrated Device Technology (IDT)**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Part Number:** IDT7140SA55J  
- **Manufacturer:** IDT (Integrated Device Technology)  
- **Type:** Dual-Port SRAM  
- **Density:** 4K x 8 (32Kb)  
- **Speed:** 55 ns access time  
- **Voltage Supply:** 5V ±10%  
- **Operating Temperature:** Commercial (0°C to +70°C)  
- **Package:** 48-pin PLCC (Plastic Leaded Chip Carrier)  

### **Descriptions:**
- The **IDT7140SA55J** is a **bidirectional dual-port RAM**, allowing simultaneous access from two independent buses.  
- It is designed for high-performance applications requiring fast data transfer between processors or systems.  
- Features **semaphore (flag) logic** for inter-processor communication and hardware arbitration to prevent data contention.  

### **Features:**
- **True Dual-Port Operation:** Independent read/write access from both ports.  
- **High-Speed Performance:** 55 ns access time.  
- **Low Power Consumption:** CMOS technology for reduced power usage.  
- **Bus Compatibility:** TTL-compatible inputs and outputs.  
- **Semaphore Control:** Built-in hardware arbitration for conflict resolution.  
- **Automatic Power-Down:** Reduces power when not in use.  
- **Industrial-Grade Options Available:** Extended temperature range versions.  

This device is commonly used in **multiprocessor systems, communication equipment, and real-time data processing applications**.  

Would you like additional details on pin configurations or applications?

Application Scenarios & Design Considerations

HIGH-SPEED 1K x 8 DUAL-PORT STATIC RAM

Alternative Part Number

  • CY7C006A-55JC --: Dual-port SRAM with comparable 55 ns access time and 5 V operation, pin-compatible with the IDT7140 dual-port RAM family.
  • AS7C34096A-55JC --: 5 V asynchronous SRAM in the same PLCC package with 55 ns speed grade, suitable drop-in replacement for legacy IDT SRAM designs.
  • IS61LV256-55J --: Low-power 5 V SRAM with 55 ns access time in PLCC package, offering similar timing and interface characteristics for board-level substitution.
  • CY7C199-55JC --: Pin-compatible 32K x 8 asynchronous SRAM with 55 ns access time, a common drop-in replacement for the 7140 series in through-hole and PLCC sockets.
  • AS7C256-55JC --: 32K x 8 low-power CMOS SRAM with 55 ns speed grade, functionally equivalent and widely available as a second-source for legacy IDT SRAMs.
  • IS61C256-55J --: 32K x 8 high-speed CMOS SRAM with matching 55 ns access time and JEDEC-compatible pinout, suitable as a form-fit-function alternative.

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