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TC55257AFL-85 from TOSHIBA

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TC55257AFL-85

Manufacturer: TOSHIBA

TOSHIBA MOS MEMORY PRODUCTS

Partnumber Manufacturer Quantity Availability
TC55257AFL-85,TC55257AFL85 TOSHIBA 5380 In Stock

Description and Introduction

TOSHIBA MOS MEMORY PRODUCTS The TC55257AFL-85 is a high-speed 32K x 8-bit CMOS static RAM (SRAM) manufactured by **TOSHIBA**.  

### **Key Specifications:**  
- **Organization:** 32K words × 8 bits  
- **Operating Voltage:** 5V ±10%  
- **Access Time:** 85ns  
- **Operating Temperature Range:** Commercial (0°C to +70°C)  
- **Package:** 28-pin SOP (Small Outline Package)  
- **Low Power Consumption:**  
  - Standby current (TTL level): 10mA (max)  
  - Standby current (CMOS level): 100μA (max)  
- **Tri-State Outputs** for bus compatibility  
- **Fully Static Operation** (no clock or refresh required)  
- **Data Retention Voltage:** 2V (min)  

### **Features:**  
- **High-Speed Performance:** Suitable for cache memory and high-speed buffer applications.  
- **CMOS Technology:** Ensures low power consumption.  
- **Wide Operating Voltage Range:** Supports standard 5V systems.  
- **Direct Replacement:** Compatible with other industry-standard 32K x 8 SRAMs.  

This SRAM is commonly used in embedded systems, industrial controls, and communication devices.

Application Scenarios & Design Considerations

TOSHIBA MOS MEMORY PRODUCTS

Alternative Part Number

  • IS62C256AL-45ULI --: 32K x 8 low-power CMOS SRAM with 45 ns access time, pin-compatible with the TC55257AFL-85 and widely available; faster speed grade covers the 85 ns requirement.
  • AS6C62256-55PCN --: 32K x 8 asynchronous SRAM in a 28-pin DIP/TSOP package, functionally equivalent to the Toshiba part and commonly used as a drop-in replacement for legacy 62256-type SRAMs.
  • CY62256NLL-70PXC --: 32K x 8 low-power SRAM with 70 ns access time, pin-compatible with the TC55257AFL-85 and backed by a long-life supply chain for legacy designs.

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