Overview
The CD74HC125MT, produced by Texas Instruments, is a quad buffer with 3-state outputs. This device contains four independent buffers, each performing the Boolean function Y = A in positive logic. It is part of the 74HC series, known for its high-speed CMOS logic and wide operating voltage range.
The CD74HC125MT is designed to operate over a broad temperature range of -55°C to +125°C, making it suitable for various environmental conditions. It is available in a 14-pin SOIC package, which is compact and suitable for surface mount applications.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | 14-pin SOIC | 8.70 mm × 3.90 mm |
| Voltage - Supply | Operating voltage range | 2 V to 6 V |
| Operating Temperature | Free-air temperature range | -55°C to +125°C |
| Number of Elements | Number of buffers | 4 |
| Output Type | 3-state outputs | |
| Input Type | Buffered inputs | |
| Current - Output High, Low | Maximum output current | 7.8 mA, 7.8 mA |
| Input Capacitance | Input capacitance at 5 V | 10 pF |
| Three-state Output Capacitance | Output capacitance in 3-state mode | 20 pF |
Key Features
- Buffered Inputs: The device has buffered inputs to ensure stable and reliable signal transmission.
- Wide Operating Voltage Range: Operates over a voltage range of 2 V to 6 V, making it versatile for different applications.
- Wide Operating Temperature Range: Functions across a broad temperature range of -55°C to +125°C.
- 3-State Outputs: Each buffer has a 3-state output, allowing for high-impedance state when the output enable (OE) input is high.
- Significant Power Reduction: Compared to LSTTL logic ICs, this device offers significant power reduction.
- High Fanout Capability: Supports fanout up to 10 LSTTL loads.
- Balanced CMOS Outputs: The outputs are balanced to sink and source similar currents, ensuring fast edges into light loads.
Applications
The CD74HC125MT is suitable for a variety of applications where digital signal buffering and isolation are required. Some key applications include:
- Digital Signal Enable: Used to enable digital signals in various electronic circuits.
- Logic Circuits: Ideal for use in logic circuits where signal buffering and isolation are necessary.
- Embedded Systems: Can be used in embedded systems to manage and buffer digital signals effectively.
- Industrial Control Systems: Suitable for industrial control systems that require reliable and stable digital signal transmission.
Q & A
- What is the operating voltage range of the CD74HC125MT?
The operating voltage range is 2 V to 6 V.
- What is the temperature range for the CD74HC125MT?
The device operates over a temperature range of -55°C to +125°C.
- How many buffers does the CD74HC125MT contain?
The device contains four independent buffers.
- What type of outputs does the CD74HC125MT have?
The device has 3-state outputs.
- What is the maximum output current of the CD74HC125MT?
The maximum output current is 7.8 mA for both high and low states.
- Can the CD74HC125MT drive large capacitive loads?
While it can drive loads with a total capacitance less than or equal to the maximum specified, larger capacitive loads are not recommended without additional series resistors.
- What is the fanout capability of the CD74HC125MT?
The device supports fanout up to 10 LSTTL loads.
- Is the CD74HC125MT RoHS compliant?
- What package types are available for the CD74HC125MT?
The device is available in a 14-pin SOIC package.
- What are the typical applications of the CD74HC125MT?
Typical applications include digital signal enable, logic circuits, embedded systems, and industrial control systems.
