Fairchild Semiconductor MM74HC125MX
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.14 | $0.14 |
| 15+ | $0.14 | $2.10 |
| 25+ | $0.14 | $3.50 |
| 50+ | $0.13 | $6.50 |
| 100+ | $0.11 | $11.00 |
| N+ | $0.02 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Fairchild Semiconductor |
| 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 (0.154", 3.90mm Width) |
| Supplier Device Package | 14-SOIC |
| ROHS |  |
The MM74HC125MX from onsemi is a quad 3-State non-inverting buffer designed for general-purpose digital signal buffering and bus isolation. Operating from 2V to 6V, it is compatible with a wide range of logic families, including TTL and CMOS. Each of the four channels can source or sink 7.8mA, making it suitable for driving LEDs, relays, and capacitive loads. The 3-State outputs enable multiple devices to share a common bus without interference. Housed in a compact 14-SOIC package, this buffer is ideal for space-constrained designs in consumer electronics, industrial controls, and automotive systems. Its robust CMOS construction ensures low power consumption and high noise immunity.
- Wide 2V to 6V Supply Range: Works with both 3.3V and 5V systems, reducing the need for level shifters.
- 3-State Outputs: Facilitates bus sharing and prevents signal contention in multi-device setups.
- Quad Channel Design: Provides four independent buffers in a single package, saving board space.
- High Noise Immunity: CMOS technology ensures reliable operation in electrically noisy environments.
Microcontroller I/O Expansion
Use the MM74HC125MX to buffer and drive multiple LEDs, relays, or other loads from a microcontroller's I/O pins, protecting the MCU from excessive current draw.
Bus Isolation in Multi-Board Systems
The 3-State outputs allow multiple boards to share a common data bus. Each board can disable its buffers when not transmitting, preventing data collisions.
Level Shifting from 5V to 3.3V
When powered at 5V, the high-level output voltage is compatible with 3.3V logic inputs, enabling communication between 5V sensors and 3.3V microcontrollers.
Driving High-Capacitance Lines
The buffer's 7.8mA output current can drive long PCB traces or cables, reducing signal degradation in noisy industrial environments.
Clock Signal Distribution
Use multiple channels to fan out a single clock signal to several peripherals, ensuring synchronized operation without loading the source.
Battery-Powered Portable Devices
With a 2V minimum supply, it can operate directly from two AA batteries, providing a low-power buffering solution for handheld instruments.
- Q: What is the logic family of the MM74HC125MX?
- A: It is part of the 74HC (High-Speed CMOS) family, offering a balance of speed and power efficiency.
- Q: What is the function of this IC?
- A: It is a quad buffer with non-inverting outputs, used to isolate and drive signals.
- Q: How many channels does it have?
- A: It contains 4 independent buffer channels.
- Q: What is the output type?
- A: The outputs are 3-State, allowing them to be disconnected from the bus when disabled.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, compatible with TTL, 3.3V, and 5V logic systems.
- Q: What package is available?
- A: It is available in a 14-SOIC package with a 3.90mm body width.
MM74HC125MX.pdf
- Q: What is the logic family of the MM74HC125MX?
- A: It is part of the 74HC (High-Speed CMOS) family, offering a balance of speed and power efficiency.
- Q: What is the function of this IC?
- A: It is a quad buffer with non-inverting outputs, used to isolate and drive signals.
- Q: How many channels does it have?
- A: It contains 4 independent buffer channels.
- Q: What is the output type?
- A: The outputs are 3-State, allowing them to be disconnected from the bus when disabled.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, compatible with TTL, 3.3V, and 5V logic systems.
- Q: What package is available?
- A: It is available in a 14-SOIC package with a 3.90mm body width.
