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TMS27PC256-17FML

Manufacturer: TI

262 144-Bitprogrammable Read-Only Memory
Partnumber Manufacturer Quantity Availability
TMS27PC256-17FML,TMS27PC25617FML TI 598 In Stock

Description and Introduction

262 144-Bitprogrammable Read-Only Memory The TMS27PC256-17FML is a 256K (32K x 8) UV-erasable and electrically programmable read-only memory (EPROM) manufactured by Texas Instruments.  

### **Specifications:**  
- **Organization:** 32K x 8  
- **Access Time:** 170 ns  
- **Operating Voltage:** 5V ±10%  
- **Power Dissipation:**  
  - Active: 525 mW (max)  
  - Standby: 132 mW (max)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 28-pin Ceramic DIP (Dual In-line Package) with window for UV erasure  
- **Programming Voltage (VPP):** 12.5V  
- **Data Retention:** 10 years minimum  

### **Descriptions and Features:**  
- **High-Speed Performance:** Fast access time of 170 ns.  
- **Reliable Programming:** Supports fast programming algorithms.  
- **UV-Erasable:** Can be erased via ultraviolet light exposure for reuse.  
- **Single 5V Power Supply:** Simplifies system design.  
- **TTL-Compatible Inputs/Outputs:** Ensures easy interfacing with standard logic circuits.  
- **Three-State Outputs:** Allows for bus-oriented applications.  
- **Industrial Standard Pinout:** Compatible with other 27C256 EPROMs.  

This EPROM is commonly used in embedded systems, firmware storage, and legacy computing applications requiring non-volatile memory.

Application Scenarios & Design Considerations

262 144-Bitprogrammable Read-Only Memory

Alternative Part Number

  • M27C256B-15F1 --: 256Kbit UV EPROM with similar pinout and access time, widely available and a common drop-in replacement for 27C256-class devices.
  • AM27C256-150DC --: Equivalent 256Kbit CMOS EPROM with 150ns access time and compatible DIP package, suitable as a functional substitute.
  • NMC27C256Q-150 --: 256Kbit EPROM in the same 27C256 family with comparable speed and pin configuration, usable as an alternative source.
  • AM27C256-155DC --: Pin-compatible 256Kbit CMOS EPROM with 155ns access time, matching the original's density and DIP package for direct board substitution.
  • M27C256B-20F1 --: Same 256Kbit EPROM family and pinout with 200ns access time; acceptable when the system timing margin allows a slightly slower device.

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