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SN74HC245

Manufacturer: TI

Octal Bus Transceivers With 3-State Outputs

Partnumber Manufacturer Quantity Availability
SN74HC245 TI 4065 In Stock

Description and Introduction

Octal Bus Transceivers With 3-State Outputs The SN74HC245 is an octal bus transceiver manufactured by Texas Instruments (TI). Here are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Technology Family:** HC (High-Speed CMOS)  
- **Supply Voltage Range:** 2V to 6V  
- **Operating Temperature Range:** -40°C to 85°C  
- **Number of Channels:** 8 (Octal)  
- **Logic Type:** Transceiver, Non-Inverting  
- **Output Type:** 3-State  
- **Propagation Delay:** 12 ns (typical at 5V)  
- **Input Capacitance:** 3.5 pF (typical)  
- **I/O Voltage Compatibility:** TTL, CMOS  
- **Current Output (High/Low):** ±7.8 mA (at 6V)  

### **Descriptions:**  
The SN74HC245 is an octal bus transceiver designed for asynchronous two-way communication between data buses. It features 3-state outputs for bus-oriented applications and bidirectional data flow controlled by the **Direction (DIR)** input. The **Output Enable (OE)** input disables both outputs when high, allowing isolation from the bus.  

### **Features:**  
- **Bidirectional Data Flow:** Controlled by DIR pin.  
- **3-State Outputs:** Allows bus isolation when disabled.  
- **Wide Operating Voltage:** 2V to 6V.  
- **High Noise Immunity:** CMOS technology.  
- **Low Power Consumption:** HC family benefits.  
- **ESD Protection:** Exceeds 2000V (HBM).  
- **Package Options:** SOIC, TSSOP, PDIP.  

This device is commonly used in data buses, memory interfacing, and bidirectional communication systems.  

(Note: All details are sourced from TI's official documentation.)

Application Scenarios & Design Considerations

Octal Bus Transceivers With 3-State Outputs

Alternative Part Number

  • MC74HC245ADWG --: Pin-compatible octal bus transceiver in the same HC logic family with equivalent drive and speed, widely available from a different vendor.
  • CD74HC245E --: Same-function octal bus transceiver from TI's CD74HC series, drop-in compatible with identical pinout and logic levels.
  • 74HC245D --: Standard 74HC245 octal bus transceiver in SOIC package, functionally and pin-compatible with comparable electrical characteristics.

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