Overview
The MC74VHC125DR2G, produced by onsemi, is a high-speed CMOS quad bus buffer fabricated with silicon gate CMOS technology. This device is designed to achieve high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the low power dissipation characteristic of CMOS technology. The MC74VHC125DR2G features 3-state control inputs, allowing the output to be placed in a high impedance state when the OE (Output Enable) input is set high. This makes it versatile for various digital logic applications, including level conversion between 3.3 V and 5.0 V systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (DC Supply Voltage) | 2.0 | 5.5 | V | |
| VIN (DC Input Voltage) | 0 | 5.5 | V | |
| VOUT (DC Output Voltage) | 0 | VCC + 0.5 | V | |
| VIH (High-Level Input Voltage) | 1.5 | 2.1 | 3.85 | V |
| VIL (Low-Level Input Voltage) | 0.5 | 0.9 | 1.65 | V |
| tPD (Propagation Delay) | 3.8 | ns | ||
| ICC (DC Supply Current) | 4 | μA | ||
| TA (Operating Temperature) | -55 | 125 | °C |
Key Features
- High Speed: Propagation delay of 3.8 ns (Typ) at VCC = 5 V.
- Low Power Dissipation: ICC = 4 μA (Max) at TA = 25°C.
- High Noise Immunity: VNIH = VNIL = 28% VCC.
- Power Down Protection: Provided on inputs.
- Balanced Propagation Delays: Ensures consistent signal timing.
- Operating Range: Designed for 2 V to 5.5 V operation.
- Low Noise: VOLP = 0.8 V (Max).
- Pin and Function Compatibility: Compatible with other standard logic families.
- Latchup Performance: Exceeds 100 mA.
- ESD Performance: Human Body Model > 2000 V.
- Pb-Free and RoHS Compliant: Environmentally friendly packaging.
Applications
The MC74VHC125DR2G is suitable for a variety of applications, including:
- Level Conversion: Interfacing between 3.3 V and 5.0 V systems.
- Bus Buffering: Buffering signals in high-speed digital systems.
- Logic Circuits: Use in complex digital logic circuits requiring low power and high speed.
- Automotive and Industrial Systems: AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other demanding applications.
Q & A
- What is the typical propagation delay of the MC74VHC125DR2G?
The typical propagation delay is 3.8 ns at VCC = 5 V.
- What is the maximum DC supply current of the MC74VHC125DR2G?
The maximum DC supply current is 4 μA at TA = 25°C.
- What is the operating temperature range of the MC74VHC125DR2G?
The operating temperature range is -55°C to 125°C.
- Is the MC74VHC125DR2G compatible with TTL levels?
No, the MC74VHC125 inputs are compatible with standard CMOS levels. For TTL compatibility, the MC74VHCT125A should be used.
- What is the purpose of the OE (Output Enable) input?
The OE input is used to place the output into a high impedance state when set high.
- Does the MC74VHC125DR2G provide power down protection?
- Is the MC74VHC125DR2G Pb-Free and RoHS compliant?
- What is the maximum input voltage the MC74VHC125DR2G can tolerate?
The inputs can tolerate voltages up to 5.5 V.
- Can the MC74VHC125DR2G be used for level conversion between different voltage systems?
- What is the ESD performance of the MC74VHC125DR2G?
The ESD performance is > 2000 V according to the Human Body Model.
