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TC55257DFTI-70L from TOSHIBA

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TC55257DFTI-70L

Manufacturer: TOSHIBA

32,768 WORD x 8 BIT STATIC RAM

Partnumber Manufacturer Quantity Availability
TC55257DFTI-70L,TC55257DFTI70L TOSHIBA 300 In Stock

Description and Introduction

32,768 WORD x 8 BIT STATIC RAM The TC55257DFTI-70L is a 256K (32K x 8) CMOS static RAM (SRAM) manufactured by Toshiba.  

### **Specifications:**  
- **Organization:** 32K x 8 bits  
- **Operating Voltage:** 5V ±10%  
- **Access Time:** 70ns  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** 28-pin TSOP (Thin Small Outline Package)  
- **Low Power Consumption:**  
  - Active Current: 30mA (max)  
  - Standby Current: 10µA (max)  
- **Fully Static Operation:** No clock or refresh required  
- **Tri-State Outputs**  
- **Data Retention Voltage:** 2V (min)  

### **Descriptions and Features:**  
- **High-Speed Operation:** Suitable for applications requiring fast access times.  
- **Low Power CMOS Technology:** Ensures power efficiency in both active and standby modes.  
- **Wide Temperature Range:** Supports industrial-grade applications.  
- **Compatibility:** Directly replaces other 32K x 8 SRAMs with similar pinouts.  
- **Reliable Data Retention:** Maintains data integrity even at low voltages.  

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

(Source: Toshiba datasheet for TC55257DFTI-70L.)

Application Scenarios & Design Considerations

32,768 WORD x 8 BIT STATIC RAM

Alternative Part Number

  • IS62C256AL-45ULI --: 32K x 8 low-power CMOS SRAM with similar 70 ns-class access time and pinout, widely available and a common drop-in replacement for Toshiba 32Kx8 SRAMs.
  • AS6C62256-55PCN --: 32K x 8 asynchronous SRAM in a comparable package with 55 ns access time, functionally equivalent and often used to replace legacy Toshiba TC55257 devices.
  • CY62256NLL-70PXC --: 32K x 8 low-power SRAM with 70 ns access time matching the original speed grade, suitable as a functional alternative where timing and pin compatibility are required.

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