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SN7489N from AMD

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SN7489N

Manufacturer: AMD, TI, TI.

64-BIT RANDOM-ACCESS READ/WRITE MEMORY

Partnumber Manufacturer Quantity Availability
SN7489N AMD, TI, TI. 60 In Stock

Description and Introduction

64-BIT RANDOM-ACCESS READ/WRITE MEMORY The SN7489N is a 64-bit random access memory (RAM) manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Type:** 64-bit RAM (16 words x 4 bits)  
- **Organization:** 16 x 4  
- **Logic Family:** TTL (Transistor-Transistor Logic)  
- **Supply Voltage (VCC):** 5V (nominal)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 16-pin DIP (Dual In-line Package)  
- **Access Time:** Typically 35 ns  
- **Power Dissipation:** ~525 mW (max)  

### **Descriptions:**  
- The SN7489N is a bipolar memory IC designed for high-speed digital applications.  
- It features a non-destructive readout and destructive write operation.  
- Data is stored in a 16 x 4 matrix, allowing 16 addressable locations, each holding 4 bits.  
- It is compatible with standard TTL logic levels.  

### **Features:**  
- **Non-destructive Read:** Data remains intact after reading.  
- **TTL-Compatible Inputs/Outputs:** Works with standard TTL logic levels.  
- **Three-State Outputs:** Allows bus-oriented applications.  
- **Asynchronous Operation:** No clock required for read/write operations.  
- **Standard 16-Pin DIP Package:** Easy integration into breadboards and PCBs.  

This information is based solely on the factual specifications and features of the SN7489N as provided by Texas Instruments.

Application Scenarios & Design Considerations

64-BIT RANDOM-ACCESS READ/WRITE MEMORY

Alternative Part Number

  • 74LS189N --: Low-power Schottky 64-bit RAM with the same 16x4 organization and pinout, a common drop-in replacement for the 7489.
  • DM74LS189N --: Equivalent 64-bit read/write memory in the 74LS family with matching function and DIP-16 pinout.
  • SN74LS189N --: TI's LS-series 64-bit RAM offering the same 16-word by 4-bit architecture and compatible pinout.
  • 74LS189AN --: Same 64-bit read/write memory function in the LS family, lower power than the original 7489 and commonly used as a drop-in replacement.
  • MM74C89N --: CMOS 64-bit RAM alternative with similar organization and pinout, suitable when lower power consumption is desired.

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