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SN74HC645N from TI,Texas Instruments

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SN74HC645N

Manufacturer: TI

Octal Bus Transceivers With 3-State Outputs

Partnumber Manufacturer Quantity Availability
SN74HC645N TI 50 In Stock

Description and Introduction

Octal Bus Transceivers With 3-State Outputs The SN74HC645N is an octal bus transceiver manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Type:** Octal Bus Transceiver  
- **Technology Family:** HC (High-Speed CMOS)  
- **Supply Voltage Range:** 2V to 6V  
- **Operating Temperature Range:** -40°C to 85°C  
- **Number of Channels:** 8  
- **Output Type:** 3-State  
- **Propagation Delay:** 14 ns (typical at 5V)  
- **Input Capacitance:** 3.5 pF (typical)  
- **Package Type:** PDIP (Plastic Dual-In-Line Package)  
- **Pin Count:** 20  

### **Descriptions:**  
The SN74HC645N is a bidirectional octal bus transceiver designed for asynchronous communication between data buses. It features non-inverting 3-state outputs and can transmit data in both directions (A to B or B to A) based on the direction control input (DIR).  

### **Features:**  
- **Bidirectional Data Flow:** Controlled by the DIR pin.  
- **3-State Outputs:** Allows multiple devices to share a common bus.  
- **Wide Operating Voltage:** Supports 2V to 6V operation.  
- **High-Speed CMOS:** Provides low power consumption with high noise immunity.  
- **Output Drive Capability:** 15 mA at 5V.  
- **ESD Protection:** Exceeds 2000V per JESD 22.  

This device is commonly used in data communication systems, bus interfacing, and signal buffering applications.

Application Scenarios & Design Considerations

Octal Bus Transceivers With 3-State Outputs

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