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TMS27C256-2JL from TMS

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TMS27C256-2JL

Manufacturer: TMS, TI

262 144-Bitprogrammable Read-Only Memory 28-CDIP 0 to 70

Partnumber Manufacturer Quantity Availability
TMS27C256-2JL,TMS27C2562JL TMS, TI 5131 In Stock

Description and Introduction

262 144-Bitprogrammable Read-Only Memory 28-CDIP 0 to 70 The **TMS27C256-2JL** is a 256K-bit (32K x 8) UV-erasable and electrically programmable read-only memory (EPROM) manufactured by **Texas Instruments (TMS)**.  

### **Key Specifications:**  
- **Organization:** 32K x 8  
- **Access Time:** 200 ns (indicated by the "-2" suffix)  
- **Operating Voltage:** 5V ±10%  
- **Power Consumption:**  
  - Active Current: 100 mA (max)  
  - Standby Current: 40 mA (max)  
- **Programming Voltage:** 12.5V (VPP)  
- **Package:** 28-pin DIP (Dual In-line Package)  
- **Technology:** NMOS  
- **Operating Temperature Range:** 0°C to +70°C  

### **Features:**  
- **UV-Erasable:** Can be erased by exposure to ultraviolet light for reprogramming.  
- **Electrically Programmable:** Requires a high-voltage programming pulse (VPP).  
- **Single 5V Supply for Read Operation:** No additional voltage needed during normal operation.  
- **Three-State Outputs:** Allows bus sharing in microprocessor-based systems.  
- **JEDEC Standard Pinout:** Compatible with other 27C256 EPROMs.  
- **High Reliability:** Endurance of at least 100 program/erase cycles.  

### **Applications:**  
- Firmware storage in embedded systems  
- Microcontroller program memory  
- Legacy computing and industrial control systems  

This EPROM is designed for applications requiring non-volatile memory with the flexibility of reprogramming.

Application Scenarios & Design Considerations

262 144-Bitprogrammable Read-Only Memory 28-CDIP 0 to 70

Alternative Part Number

  • M27C256B-20F1 --: Pin-compatible 256Kbit UV EPROM with 200ns access time, widely available and a common drop-in replacement for the TMS27C256.
  • AM27C256-200DC --: Equivalent 32K x 8 UV EPROM with matching 200ns speed grade and standard JEDEC pinout, suitable as a direct functional substitute.
  • HN27C256AG-20 --: 256Kbit CMOS UV EPROM with 200ns access time and compatible pinout, offering similar performance for legacy designs.
  • NMC27C256Q200 --: 256Kbit CMOS EPROM rated at 200ns, functionally and pin-compatible alternative for the 27C256 device.

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