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SN74BCT640N

Manufacturer: TI

Octal Bus Transceivers

Partnumber Manufacturer Quantity Availability
SN74BCT640N TI 70 In Stock

Description and Introduction

Octal Bus Transceivers The SN74BCT640N is a bus transceiver manufactured by Texas Instruments (TI). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Logic Type:** Octal Bus Transceiver  
- **Technology:** BCT (BiCMOS)  
- **Number of Bits:** 8  
- **Voltage Supply:** 4.5V to 5.5V  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package Type:** PDIP (Plastic Dual-In-Line Package)  
- **Pin Count:** 20  
- **Output Type:** 3-State  
- **Propagation Delay (Max):** 10 ns  
- **Current - Output High, Low:** 15mA, 64mA  
- **Mounting Type:** Through Hole  

### **Descriptions:**  
The SN74BCT640N is an octal bus transceiver designed for bidirectional asynchronous communication between data buses. It features non-inverting 3-state outputs and is optimized for high-speed, low-power operation in bus-oriented systems.  

### **Features:**  
- **Bidirectional Data Flow:** Allows data transmission in both directions.  
- **3-State Outputs:** Enables bus isolation when disabled.  
- **High Drive Capability:** Supports heavy capacitive loads.  
- **Wide Operating Voltage Range:** 4.5V to 5.5V.  
- **Low Power Consumption:** Optimized for power-sensitive applications.  
- **ESD Protection:** Helps prevent damage from electrostatic discharge.  

This information is based on the manufacturer's datasheet and product documentation.

Application Scenarios & Design Considerations

Octal Bus Transceivers

Alternative Part Number

  • 74F640N --: Same octal inverting bus transceiver function with 3-state outputs in a DIP-20 package, but from the faster 74F logic family with a different prefix.
  • MC74ACT640N --: Octal inverting bus transceiver with 3-state outputs in DIP-20, using the ACT family which is a common functional substitute for BCT logic.
  • CD74ACT640E --: Octal inverting bus transceiver with 3-state outputs in a PDIP-20 package; different series naming (CD prefix) while matching the logic function and pinout.
  • 74BCT640N --: Same octal bus transceiver function with BCT (BiCMOS) technology and identical pinout, offered by an alternate vendor for drop-in replacement.
  • CY74FCT640TQCT --: FCT-series octal bus transceiver with comparable speed and drive, functionally equivalent to the BCT640 with similar TTL-compatible I/O.
  • 74ACT640N --: ACT-series octal bus transceiver with TTL-compatible inputs and similar drive strength, usable as a functional substitute where BCT speed is not critical.

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