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M2764A-2F1 from STM,ST Microelectronics

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M2764A-2F1

Manufacturer: STM, SGS, ST

NMOS 64K 8K x 8 UV EPROM

Partnumber Manufacturer Quantity Availability
M2764A-2F1,M2764A2F1 STM, SGS, ST 6810 In Stock

Description and Introduction

NMOS 64K 8K x 8 UV EPROM The part **M2764A-2F1** is a **UV-erasable EPROM (Erasable Programmable Read-Only Memory)** manufactured by **STMicroelectronics (ST)**. Below are its specifications, descriptions, and features based on available data:  

### **Specifications:**  
- **Memory Size:** 64 Kbit (8 KB)  
- **Organization:** 8K x 8 bits  
- **Access Time:** 200 ns  
- **Supply Voltage (VCC):** 5V ±10%  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package Type:** 28-pin DIP (Dual In-line Package)  
- **Technology:** NMOS  
- **Programming Voltage (VPP):** 12.5V  
- **Standby Current:** 100 µA (max)  
- **Active Current:** 30 mA (max)  

### **Descriptions:**  
- The **M2764A-2F1** is a **one-time programmable (OTP) EPROM**, though it can be erased using UV light.  
- It is designed for applications requiring non-volatile memory storage.  
- Features a transparent lid for UV erasure (requires exposure to UV light for ~20 minutes).  
- Compatible with standard EPROM programmers.  

### **Features:**  
- **High Reliability:** Endurance of at least 100 programming cycles.  
- **Low Power Consumption:** CMOS-compatible inputs for reduced power usage.  
- **Single 5V Supply:** Simplifies system integration.  
- **TTL-Compatible Inputs/Outputs:** Ensures easy interfacing with standard logic circuits.  
- **Three-State Outputs:** Allows bus sharing in microprocessor-based systems.  
- **Programmable Chip Enable (CE) and Output Enable (OE):** Enhances control flexibility.  

This part is now considered **obsolete** and may not be in production. For replacements, consult STMicroelectronics' latest documentation.

Application Scenarios & Design Considerations

NMOS 64K 8K x 8 UV EPROM

Alternative Part Number

  • AM2764A-2DC --: Pin-compatible 8Kx8 UV EPROM with 200ns access time, direct functional equivalent to the M2764A-2F1.
  • TMS2764-25JL --: Same 64Kbit EPROM density and 24-pin DIP pinout, slightly slower 250ns access but widely available substitute.
  • HN482764G-2 --: Equivalent 8Kx8 EPROM with 200ns speed grade and compatible pinout, usable as a drop-in replacement.
  • 27C64-20 --: 64K-bit UV-erasable EPROM with 28-pin DIP pinout compatible with the M2764A; 200 ns access meets or beats the -2 speed grade.
  • TMS2764-25 --: Pin-compatible 64K EPROM in the same 28-pin package, widely available second source with comparable access time.
  • HN27C64G-20 --: CMOS 64K EPROM with compatible pinout and 200 ns speed, suitable drop-in replacement for legacy 2764 sockets.

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