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CAT28C256 from CSI

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CAT28C256

Manufacturer: CSI

256 kb Parallel EEPROM

Partnumber Manufacturer Quantity Availability
CAT28C256 CSI 425 In Stock

Description and Introduction

256 kb Parallel EEPROM The CAT28C256 is a 256Kb (32K x 8) parallel EEPROM manufactured by ON Semiconductor (formerly Catalyst Semiconductor, CSI).  

### **Key Specifications:**  
- **Memory Capacity:** 256Kb (32K x 8)  
- **Interface:** Parallel (8-bit data bus)  
- **Supply Voltage:** 5V ±10%  
- **Access Time:** 150ns, 200ns (varies by speed grade)  
- **Write Cycle Time:** 5ms (byte write), 10ms (page write)  
- **Page Write Buffer:** 64 bytes  
- **Endurance:** 1,000,000 write cycles (minimum)  
- **Data Retention:** 100 years (minimum)  
- **Operating Temperature Range:**  
  - Commercial: 0°C to +70°C  
  - Industrial: -40°C to +85°C  
- **Package Options:**  
  - 28-pin DIP (Dual In-line Package)  
  - 28-pin PLCC (Plastic Leaded Chip Carrier)  
  - 28-pin SOIC (Small Outline IC)  

### **Features:**  
- **Hardware & Software Data Protection**  
- **Self-Timed Write Cycle**  
- **Low Power Consumption:**  
  - Active Read: 30mA (typical)  
  - Standby: 100μA (typical)  
- **TTL-Compatible I/O**  
- **JEDEC Standard Pinout**  

The CAT28C256 is compatible with other 28C256 EEPROMs and is commonly used in embedded systems, industrial controls, and legacy computing applications.  

Would you like additional details on any specific aspect?

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