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TC74VHC245 from TOSH,TOSHIBA

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TC74VHC245

Manufacturer: TOSH, TOSHIBA

OCTAL BUS TRANSCEIVER

Partnumber Manufacturer Quantity Availability
TC74VHC245 TOSH, TOSHIBA 4180 In Stock

Description and Introduction

OCTAL BUS TRANSCEIVER The **TC74VHC245** is a high-speed CMOS octal bus transceiver manufactured by **TOSHIBA**. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Logic Family:** VHC (Very High-Speed CMOS)  
- **Supply Voltage Range:** 2.0V to 5.5V  
- **High-Speed Operation:**  
  - **tpd (Propagation Delay):** 4.2 ns (max) at 5V  
- **Low Power Consumption:**  
  - **ICC (Static Supply Current):** 4 µA (max) at 5.5V  
- **Output Drive Capability:**  
  - **IOH/IOL:** ±8 mA (min) at 4.5V  
- **Input/Output Compatibility:**  
  - TTL-compatible inputs  
  - 5V-tolerant inputs  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:**  
  - **TSSOP-20**  
  - **SSOP-20**  
  - **SOP-20**  

### **Description:**  
The **TC74VHC245** is an **8-bit bidirectional transceiver** with 3-state outputs. It is designed for **asynchronous communication between data buses** and can **transmit data in both directions** (A to B or B to A) based on the direction control input (**DIR**). The **Output Enable (OE)** pin controls the outputs, allowing them to be placed in a high-impedance state when disabled.  

### **Features:**  
- **Bidirectional Data Flow:** Controlled by the **DIR** pin.  
- **3-State Outputs:** Allows bus isolation when **OE** is high.  
- **Wide Operating Voltage:** Supports **2.0V to 5.5V**, making it suitable for mixed-voltage systems.  
- **Balanced Propagation Delays:** Ensures reliable high-speed operation.  
- **Low Noise:** Features **Schmitt-trigger inputs** for improved noise immunity.  
- **Pb-Free and RoHS Compliant:** Environmentally friendly packaging options.  

This device is commonly used in **bus interface applications**, **data communication systems**, and **microprocessor/microcontroller interfacing**.  

Would you like additional details on pin configurations or truth tables?

Application Scenarios & Design Considerations

OCTAL BUS TRANSCEIVER

Alternative Part Number

  • SN74AHC245 --: Octal bus transceiver with 3-state outputs in the AHC family, functionally equivalent to the VHC245 with similar speed and drive characteristics.
  • MC74VHC245 --: Direct VHC-family octal bus transceiver with 3-state outputs, matching the original logic family and pinout for drop-in replacement.
  • 74HC245 --: Widely available octal bus transceiver with 3-state outputs; slightly lower speed than VHC but pin-compatible and suitable for most non-critical bus interface designs.
  • 74VHC245M --: Same VHC-family octal bus transceiver with equivalent 3-state functionality and pinout, widely available and cost effective.
  • SN74VHC245DW --: Direct functional equivalent octal bus transceiver in the VHC logic family, same speed and drive characteristics, broad availability.
  • MC74VHC245DWR2G --: VHC-family octal bus transceiver with matching electrical specs and pinout, suitable drop-in replacement in most designs.

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