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SN74AS640

Octal Bus Transceivers With 3-State Outputs

Partnumber Manufacturer Quantity Availability
SN74AS640 2000 In Stock

Description and Introduction

Octal Bus Transceivers With 3-State Outputs The SN74AS640 is an octal bus transceiver and line driver manufactured by Texas Instruments. Here are its key specifications, descriptions, and features:  

### **Description:**  
The SN74AS640 is an 8-bit bidirectional transceiver designed for asynchronous communication between data buses. It features non-inverting outputs and is optimized for high-speed operation in bus-oriented systems.  

### **Key Features:**  
- **Logic Type:** Octal Bus Transceiver  
- **Direction Control:** Bidirectional with Output Enable (OE) and Direction (DIR) control  
- **Voltage Supply:** 4.5V to 5.5V (TTL-compatible)  
- **High-Speed Operation:** Typical propagation delay of 7.5 ns  
- **Output Drive Capability:** 15 mA (sink/source)  
- **Non-Inverting Data Paths**  
- **Package Options:** 20-pin PDIP, SOIC, and other surface-mount packages  
- **Operating Temperature Range:** 0°C to 70°C (commercial grade)  

### **Applications:**  
- Data bus buffering and direction control  
- Memory interfacing  
- Peripheral driving in microprocessor-based systems  

This device is part of the **SN74AS** series, known for its advanced Schottky (AS) technology, offering improved speed and power efficiency over standard TTL logic.  

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