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SN74ALS646A from TI,Texas Instruments

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SN74ALS646A

Manufacturer: TI

Octal Registered Bus Transceivers with 3-State Outputs

Partnumber Manufacturer Quantity Availability
SN74ALS646A TI 1200 In Stock

Description and Introduction

Octal Registered Bus Transceivers with 3-State Outputs The SN74ALS646A is a 3-state octal bus transceiver and register manufactured by Texas Instruments (TI).  

### **Key Specifications:**  
- **Logic Type:** Octal Bus Transceiver/Register  
- **Technology:** Advanced Low-Power Schottky (ALS)  
- **Operating Voltage:** 4.5V to 5.5V  
- **Number of Channels:** 8  
- **Input/Output Type:** 3-State  
- **Propagation Delay:** 12ns (max)  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package Options:** 24-pin PDIP, SOIC, and others  

### **Description:**  
The SN74ALS646A combines an octal D-type flip-flop with a transceiver function, allowing bidirectional data transfer between buses. It features separate control inputs for data direction (DIR) and output enable (OE), ensuring flexible bus management.  

### **Features:**  
- **Bidirectional Data Flow:** Controlled by DIR input  
- **3-State Outputs:** Allows bus isolation when disabled  
- **Edge-Triggered Clocking:** Data is latched on the rising edge of the clock (CLK)  
- **High-Speed Operation:** Optimized for ALS performance  
- **Wide Operating Voltage:** Supports standard 5V systems  

This device is commonly used in bus-oriented systems requiring data buffering and storage.  

(Source: Texas Instruments Datasheet SN74ALS646A)

Application Scenarios & Design Considerations

Octal Registered Bus Transceivers with 3-State Outputs

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