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IS61C256AH from ISSI

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IS61C256AH

Manufacturer: ISSI

32K x 8 HIGH-SPEED CMOS STATIC RAM

Partnumber Manufacturer Quantity Availability
IS61C256AH ISSI 6000 In Stock

Description and Introduction

32K x 8 HIGH-SPEED CMOS STATIC RAM The IS61C256AH is a high-speed CMOS static RAM (SRAM) manufactured by Integrated Silicon Solution Inc. (ISSI).  

### **Specifications:**  
- **Density:** 256Kb (32K x 8)  
- **Technology:** High-speed CMOS  
- **Supply Voltage:** 4.5V - 5.5V  
- **Access Time:** 10ns, 12ns, 15ns, 20ns, 25ns (depending on variant)  
- **Operating Current:** 40mA (typical)  
- **Standby Current:** 10µA (typical)  
- **Package Options:** 28-pin SOJ, 28-pin TSOP, 28-pin DIP  
- **Operating Temperature Range:** Commercial (0°C to +70°C) and Industrial (-40°C to +85°C)  

### **Descriptions & Features:**  
- **High-Speed Operation:** Fast access times for performance-critical applications.  
- **Low Power Consumption:** CMOS technology ensures low active and standby current.  
- **Fully Static Operation:** No refresh or clock required.  
- **TTL-Compatible Inputs/Outputs:** Ensures easy interfacing with other logic circuits.  
- **Tri-State Outputs:** Allows direct connection to a common bus.  
- **Data Retention:** Guaranteed at 2V minimum supply voltage.  
- **Industrial-Grade Options:** Available for extended temperature range applications.  

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

Application Scenarios & Design Considerations

32K x 8 HIGH-SPEED CMOS STATIC RAM

Alternative Part Number

  • CY62256NLL-70PXC --: 32K x 8 asynchronous SRAM with the same 5V parallel interface and pinout, widely available and a direct functional drop-in for the IS61C256AH.
  • AS6C62256-55PCN --: Low-power 32K x 8 CMOS SRAM in the same DIP package, commonly used as a replacement for ISSI 62256-type parts with compatible timing.
  • HM62256BLP-7 --: Classic 32K x 8 SRAM with matching organization and access interface, a well-established second-source option for 256K-bit SRAM designs.

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