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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | 74HC |
| 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 | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 14-SOIC (0.209", 5.30mm Width) |
| Supplier Device Package | 14-SO |
The SN74HC125NS is a quad non-inverting buffer from the 74HC family, featuring 3-state outputs. It operates from 2V to 6V, making it versatile for both 3.3V and 5V systems. Each channel can source or sink 7.8mA, providing adequate drive for logic signals and small loads. The 14-SOIC package is industry-standard, suitable for industrial controls, automotive electronics, and general-purpose digital interfacing.
- Wide 2V to 6V Supply Range: Works with 3.3V and 5V logic, reducing inventory complexity.
- Quad Channel Integration: Four buffers in one package save board space and cost.
- 3-State Outputs: Enable bus sharing and isolation, critical for multi-device systems.
- High 7.8mA Drive: Ensures signal integrity over longer PCB traces and capacitive loads.
Microcontroller Bus Expansion
The SN74HC125NS buffers address/data lines between a microcontroller and multiple peripherals, preventing signal degradation over long traces.
Industrial Control Logic
With a 2V to 6V range, it interfaces with 5V PLCs and sensors, providing robust buffering in noisy factory environments.
Memory Address Decoding
It buffers address lines to multiple memory banks, ensuring clean signals and reliable read/write operations.
Level Shifting for 5V Systems
It translates 3.3V logic to 5V for legacy peripherals, simplifying mixed-voltage designs.
Test Equipment Signal Routing
3-state outputs allow multiple test instruments to share a common measurement bus without interference.
Automotive Body Electronics
In automotive ECUs, it buffers control signals for lighting and actuator drivers, operating reliably from -40°C to 85°C.
- Q: What is the logic family of the SN74HC125NS?
- A: It belongs to the 74HC high-speed CMOS logic family.
- Q: What is the function and channel count?
- A: It is a quad (4-channel) non-inverting buffer with 3-state outputs.
- Q: What is the output type?
- A: The outputs are 3-state, enabling connection to shared buses.
- Q: What is the voltage range?
- A: It operates from 2V to 6V, compatible with TTL and CMOS levels.
- Q: What is the package?
- A: It is available in a 14-SOIC (5.30mm width) package.
- Q: What is the drive current?
- A: It provides 7.8mA sink and source current per channel.
SN74HC125NS.pdf
- Q: What is the logic family of the SN74HC125NS?
- A: It belongs to the 74HC high-speed CMOS logic family.
- Q: What is the function and channel count?
- A: It is a quad (4-channel) non-inverting buffer with 3-state outputs.
- Q: What is the output type?
- A: The outputs are 3-state, enabling connection to shared buses.
- Q: What is the voltage range?
- A: It operates from 2V to 6V, compatible with TTL and CMOS levels.
- Q: What is the package?
- A: It is available in a 14-SOIC (5.30mm width) package.
- Q: What is the drive current?
- A: It provides 7.8mA sink and source current per channel.