Overview
The MC74VHC1G125DFT1 is a high-speed CMOS noninverting 3-state buffer fabricated with silicon gate CMOS technology. It is designed to achieve high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the low power dissipation characteristic of CMOS devices. This buffer is suitable for general usage and is compatible with a wide range of applications due to its versatile input and output structures.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Propagation Delay (t_PD) | 3.5 ns (Typ) at V_CC = 5V | ns |
| Supply Voltage (V_CC) | 2.0 to 5.5 | V |
| Input Voltage Range | Up to 5.5V regardless of V_CC | V |
| Input Thresholds | V_IL = 0.8V, V_IH = 2.0V | V |
| Output Voltage Levels | V_OH > 0.8 V_CC, V_OL < 0.1 V_CC @ Load | V |
| Power Dissipation (I_CC) | 1 µA (Max) at T_A = 25°C | µA |
| Package Type | SC-88A / SC-70-5 | - |
| Operating Temperature Range | -40°C to 125°C | °C |
Key Features
- High-speed operation with propagation delay of 3.5 ns (Typ) at V_CC = 5V
- Low power dissipation with I_CC = 1 µA (Max) at T_A = 25°C
- TTL-compatible inputs and CMOS-compatible outputs
- 3-state output with high impedance state controlled by OE(bar) input
- Input protection circuitry allowing overvoltage tolerance up to 5.5V
- Power down protection on inputs and outputs
- Balanced propagation delays
- Pin and function compatible with other standard logic families
- Pb-free packages available
- Wide operating V_CC range from 2.0V to 5.5V
Applications
The MC74VHC1G125DFT1 is versatile and suitable for many different applications, including:
- Logic level translation between different voltage levels (e.g., 3.0V CMOS to 5.0V CMOS or 1.8V CMOS to 3.0V CMOS)
- Interface between 5V and 3V circuits
- General logic buffering and signal amplification in digital circuits
- Applications requiring high speed and low power consumption
Q & A
- What is the typical propagation delay of the MC74VHC1G125DFT1?
The typical propagation delay is 3.5 ns at V_CC = 5V.
- What is the operating voltage range of the MC74VHC1G125DFT1?
The operating voltage range is from 2.0V to 5.5V.
- How does the MC74VHC1G125DFT1 handle input overvoltage?
The device has input protection circuitry that allows overvoltage tolerance up to 5.5V regardless of the supply voltage.
- What type of input thresholds does the MC74VHC1G125DFT1 have?
The device has TTL-compatible input thresholds with V_IL = 0.8V and V_IH = 2.0V.
- How is the high impedance state controlled in the MC74VHC1G125DFT1?
The high impedance state is controlled by setting the OE(bar) input to High.
- What kind of output does the MC74VHC1G125DFT1 provide?
The device provides CMOS-compatible outputs with V_OH > 0.8 V_CC and V_OL < 0.1 V_CC @ Load.
- Is the MC74VHC1G125DFT1 compatible with other standard logic families?
Yes, it is pin and function compatible with other standard logic families.
- What is the power dissipation of the MC74VHC1G125DFT1?
The maximum power dissipation is 1 µA at T_A = 25°C.
- Does the MC74VHC1G125DFT1 offer power down protection?
Yes, it provides power down protection on inputs and outputs.
- What types of packages are available for the MC74VHC1G125DFT1?
The device is available in Pb-free packages such as SC-88A / SC-70-5.
