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TC55257DFL-70L from TOSHIBA

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TC55257DFL-70L

Manufacturer: TOSHIBA, TOSH, MIT, TOS

32,768 WORD-8 BIT STATIC RAM

Partnumber Manufacturer Quantity Availability
TC55257DFL-70L,TC55257DFL70L TOSHIBA, TOSH, MIT, TOS 11283 In Stock

Description and Introduction

32,768 WORD-8 BIT STATIC RAM The TC55257DFL-70L is a SRAM (Static Random Access Memory) chip manufactured by Toshiba. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Memory Type:** Static RAM (SRAM)  
- **Density:** 262,144 bits (32K x 8-bit organization)  
- **Operating Voltage:** 5V ±10%  
- **Access Time:** 70 ns  
- **Operating Temperature Range:** Commercial (0°C to +70°C)  
- **Package Type:** 28-pin SOJ (Small Outline J-Lead)  
- **Pin Count:** 28  
- **I/O Type:** Common I/O (shared data input/output)  
- **Standby Current:** Low power consumption in standby mode  
- **Refresh Requirement:** None (SRAM does not require refresh cycles)  

### **Descriptions:**  
- The TC55257DFL-70L is a high-speed CMOS static RAM designed for applications requiring fast access times and low power consumption.  
- It is commonly used in embedded systems, industrial controls, networking equipment, and other applications needing reliable, non-volatile memory.  
- The 28-pin SOJ package provides a compact footprint suitable for space-constrained designs.  

### **Features:**  
- **High-Speed Operation:** 70 ns access time for fast data retrieval.  
- **Low Power Consumption:** CMOS technology ensures reduced power usage.  
- **Wide Voltage Tolerance:** Operates reliably at 5V ±10%.  
- **No Refresh Needed:** Unlike DRAM, SRAM retains data without periodic refreshing.  
- **Common I/O Design:** Simplifies interfacing with microprocessors and other logic devices.  
- **Three-State Outputs:** Allows bus sharing in multi-device systems.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

32,768 WORD-8 BIT STATIC RAM

Alternative Part Number

  • IS62C256AL-70U --: 32K x 8 low-power CMOS SRAM with 70 ns access time, pin-compatible with the TC55257 series and widely available.
  • AS6C62256-70PCN --: 32K x 8 low-power SRAM, 70 ns speed grade, direct functional replacement for the TC55257DFL-70L.
  • CY62256NLL-70PXC --: 32K x 8 low-power SRAM with 70 ns access time, same JEDEC pinout and comparable standby current.
  • IS62C256AL-45ULI --: 32K x 8 low-power CMOS SRAM with 45 ns access time, pin-compatible with the TC55257 series and widely available as a drop-in replacement.
  • AS6C62256-55PCN --: 32K x 8 low-power SRAM in a 28-pin DIP, functionally equivalent to the TC55257DFL with comparable speed and power characteristics.

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