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SN74AS639N from TI,Texas Instruments

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SN74AS639N

Manufacturer: TI

OCTAL BUS TRANSCEIVERS

Partnumber Manufacturer Quantity Availability
SN74AS639N TI 38 In Stock

Description and Introduction

OCTAL BUS TRANSCEIVERS The SN74AS639N is a high-performance, 8-bit bus transceiver manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Type:** Bus Transceiver  
- **Number of Bits:** 8  
- **Voltage Supply:** 4.5V to 5.5V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package / Case:** PDIP-20 (Plastic Dual In-line Package)  
- **Output Type:** 3-State  
- **Propagation Delay Time:** 9 ns (max)  
- **High-Level Output Current:** -15 mA  
- **Low-Level Output Current:** 48 mA  

### **Descriptions:**  
The SN74AS639N is designed for asynchronous communication between data buses. It features separate control inputs for data flow in both directions, allowing bidirectional data transfer.  

### **Features:**  
- **Bidirectional Data Flow:** Controlled by direction pins (DIR).  
- **3-State Outputs:** Allows connection to a bus system.  
- **High-Speed Operation:** Optimized for fast data transfer.  
- **Wide Operating Voltage:** Supports standard TTL levels.  
- **ESD Protection:** Helps prevent damage from electrostatic discharge.  

This device is commonly used in digital systems requiring bus interfacing, such as computers and industrial control systems.

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