Overview
The MC74VHC125DTR2G is a high-speed CMOS quad bus buffer manufactured by ON Semiconductor. This device is fabricated with silicon gate CMOS technology, enabling high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the low power dissipation characteristic of CMOS devices. The buffer 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 functionality is crucial for interfacing between different voltage systems, such as 5V and 3V systems, and provides high noise immunity and stable output.
Key Specifications
| Parameter | Value |
|---|---|
| Logic Function | Buffer, Non-Inverting |
| Number of Channels | 4 |
| Operating Voltage Range | 2 V to 5.5 V |
| Typical Operating Supply Voltage | 2.5 V, 3.3 V, 5 V |
| Propagation Delay (tPD) | 3.8 ns (Typ) at VCC = 5 V |
| Low Level Output Current | 8 mA |
| High Level Output Current | -8 mA |
| Maximum Operating Temperature | 125 °C |
| Minimum Operating Temperature | -55 °C |
| Package Type | TSSOP-14 |
| Package Dimensions | Width: 4.5 mm, Length: 5.1 mm, Height: 1.05 mm |
| Lead Shape | Gull-wing |
Key Features
- High Speed Operation: Achieves propagation delays similar to Bipolar Schottky TTL while maintaining CMOS low power dissipation.
- Low Power Dissipation: Maximum current consumption of 4 μA at 25°C.
- High Noise Immunity: Input noise immunity of 28% VCC.
- Power Down Protection: Provided on inputs to protect against power-down conditions.
- 3-State Output: Allows output to be placed in high impedance state when OE input is high.
- Balanced Propagation Delays: Ensures consistent signal timing.
- Wide Operating Voltage Range: Compatible with 2 V to 5.5 V systems.
- Low Noise: Maximum output low voltage of 0.8 V.
- ESD Performance: Human Body Model > 2000 V, Machine Model > 200 V.
Applications
The MC74VHC125DTR2G is versatile and can be used in various applications where high-speed signal buffering and level translation are required. These include:
- Interface between different voltage systems (e.g., 5V to 3V).
- High-speed digital circuits requiring low power consumption.
- Bus buffering in microprocessor and microcontroller systems.
- Signal amplification and noise reduction in digital communication systems.
Q & A
- What is the primary function of the MC74VHC125DTR2G?
The MC74VHC125DTR2G is a high-speed CMOS quad bus buffer designed to amplify and buffer digital signals while providing 3-state output control. - What is the operating voltage range of the MC74VHC125DTR2G?
The device operates within a voltage range of 2 V to 5.5 V. - How many channels does the MC74VHC125DTR2G have?
The MC74VHC125DTR2G has 4 channels. - What is the typical propagation delay of the MC74VHC125DTR2G?
The typical propagation delay is 3.8 ns at VCC = 5 V. - What is the maximum operating temperature of the MC74VHC125DTR2G?
The maximum operating temperature is 125 °C. - What type of package does the MC74VHC125DTR2G come in?
The device comes in a TSSOP-14 package. - Does the MC74VHC125DTR2G have power-down protection?
Yes, the device has power-down protection provided on its inputs. - What is the ESD performance of the MC74VHC125DTR2G?
The ESD performance exceeds 2000 V for the Human Body Model and 200 V for the Machine Model. - Is the MC74VHC125DTR2G compatible with other standard logic families?
Yes, it is pin and function compatible with other standard logic families. - What is the noise immunity of the MC74VHC125DTR2G?
The noise immunity is 28% of VCC.
