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TC74VHCT240AF from TOSHIBA

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TC74VHCT240AF

Manufacturer: TOSHIBA, TOS

OCTAL BUS BUFFER INVERTED/NON-INVERTED, 3-STATE OUTPUTS

Partnumber Manufacturer Quantity Availability
TC74VHCT240AF TOSHIBA, TOS 2279 In Stock

Description and Introduction

OCTAL BUS BUFFER INVERTED/NON-INVERTED, 3-STATE OUTPUTS The TC74VHCT240AF is a high-speed CMOS octal bus buffer manufactured by Toshiba. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Logic Type:** Octal Bus Buffer/Line Driver  
- **Technology:** CMOS  
- **Supply Voltage Range (VCC):** 4.5V to 5.5V  
- **High-Level Input Voltage (VIH):** 2V (min) at VCC = 4.5V  
- **Low-Level Input Voltage (VIL):** 0.8V (max) at VCC = 4.5V  
- **High-Level Output Voltage (VOH):** 4.4V (min) at VCC = 4.5V, IOH = -6mA  
- **Low-Level Output Voltage (VOL):** 0.1V (max) at VCC = 4.5V, IOL = 6mA  
- **Maximum Propagation Delay (tpd):** 7.5ns (max) at VCC = 5V, CL = 50pF  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** SOP-20 (Small Outline Package, 20 pins)  

### **Descriptions:**  
- The TC74VHCT240AF is an inverting 3-state octal buffer designed for bus interface applications.  
- It features two active-low output enable (OE) inputs, allowing independent control of two 4-bit buffers.  
- The device is compatible with TTL levels, making it suitable for interfacing between 5V CMOS and TTL systems.  
- It provides high-speed operation while maintaining low power consumption.  

### **Features:**  
- **3-State Outputs:** Allows connection to a bus-oriented system.  
- **TTL-Compatible Inputs:** Can be driven by TTL logic levels.  
- **High-Speed Operation:** Optimized for fast signal transmission.  
- **Low Power Consumption:** Typical ICC = 4μA (max) at Ta = 25°C.  
- **Balanced Propagation Delays:** Ensures reliable signal timing.  
- **ESD Protection:** Exceeds 2000V (HBM) for improved reliability.  

This information is based on Toshiba's official datasheet for the TC74VHCT240AF.

Application Scenarios & Design Considerations

OCTAL BUS BUFFER INVERTED/NON-INVERTED, 3-STATE OUTPUTS

Alternative Part Number

  • SN74AHCT240N --: Same octal buffer/line driver function with TTL-compatible inputs, widely available and pin-compatible in DIP package.
  • MC74VHCT240ADWR2G --: Direct VHCT-family octal buffer with equivalent speed and drive, available in SOIC package.
  • 74VHCT240AMTCX --: Equivalent VHCT octal buffer/line driver with similar electrical characteristics and package options.
  • SN74VHCT240APW --: Direct functional equivalent octal buffer/driver with 3-state inverting outputs in TSSOP, from a major logic supplier.
  • MC74VHCT240ADTR2G --: VHCT240 octal inverting buffer in TSSOP, same logic family and voltage range, good second-source option.
  • SN74AHCT240PWR --: Same octal buffer/line driver function with TTL-compatible inputs, widely available and pin-compatible in similar packages.

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