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| Product attributes | Property Value |
| Manufacturer | onsemi |
| Product Series | 74VHC |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 1 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 8mA, 8mA |
| Voltage - Supply | 2V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 14-TSSOP |
| ROHS |  |
The MC74VHC125DT from onsemi is a quad non-inverting buffer in the 74VHC logic family. It features four channels with 3-state outputs, each capable of sourcing or sinking 8mA. Operating from 2V to 5.5V, it supports both 3.3V and 5V systems, making it versatile for mixed-voltage designs. The 14-pin TSSOP package is compact and suitable for space-limited PCBs. Applications include bus interfacing, signal buffering, and level shifting in industrial, automotive, and consumer electronics.
- Wide 2V to 5.5V Supply Range: Works with both 3.3V and 5V logic, reducing inventory complexity.
- High-Speed CMOS Technology: Provides fast propagation delays, ideal for high-frequency signals.
- 3-State Outputs: Enables bus sharing and isolation, enhancing system flexibility.
- Wide Temperature Range (-55°C to 125°C): Reliable in extreme environments.
5V to 3.3V Level Translation
With a 2V to 5.5V supply, the MC74VHC125DT can buffer 5V logic signals down to 3.3V loads, enabling communication between legacy and modern ICs.
Bus Driving in Industrial Control Systems
The 8mA output current is sufficient for driving short bus segments in PLCs and industrial controllers, ensuring reliable data transfer.
3-State Output for Shared Data Buses
In microcontroller systems, the 3-state outputs allow multiple peripherals to share a data bus without electrical conflicts.
Signal Buffering for Long Cable Runs
Use it to buffer signals before sending over longer cables, improving noise immunity and reducing reflections in factory automation.
Clock Buffering in Mixed-Voltage Boards
It can buffer clock signals across different voltage domains, maintaining timing accuracy in mixed 3.3V/5V boards.
LED and Relay Driving in Automotive ECUs
The 8mA output can drive indicator LEDs or small relays with external transistors, simplifying automotive control modules.
- Q: What logic family does the MC74VHC125DT belong to?
- A: It is part of the 74VHC family, offering high-speed CMOS performance with TTL-compatible inputs.
- Q: What is the function of this device?
- A: It is a quad (4-channel) non-inverting buffer with 3-state outputs, used for signal buffering and bus driving.
- Q: How many channels are available?
- A: It has 4 independent buffer channels, each with a separate output enable pin.
- Q: What is the output type?
- A: The outputs are 3-State, allowing high-impedance states for bus sharing.
- Q: What is the operating voltage range?
- A: It operates from 2V to 5.5V, making it suitable for both 3.3V and 5V systems.
- Q: What package is used?
- A: It comes in a 14-pin TSSOP package (4.40mm width), ideal for compact designs.
MC74VHC125DT.pdf
- Q: What logic family does the MC74VHC125DT belong to?
- A: It is part of the 74VHC family, offering high-speed CMOS performance with TTL-compatible inputs.
- Q: What is the function of this device?
- A: It is a quad (4-channel) non-inverting buffer with 3-state outputs, used for signal buffering and bus driving.
- Q: How many channels are available?
- A: It has 4 independent buffer channels, each with a separate output enable pin.
- Q: What is the output type?
- A: The outputs are 3-State, allowing high-impedance states for bus sharing.
- Q: What is the operating voltage range?
- A: It operates from 2V to 5.5V, making it suitable for both 3.3V and 5V systems.
- Q: What package is used?
- A: It comes in a 14-pin TSSOP package (4.40mm width), ideal for compact designs.