Specifications
| Attribute | Value |
| Package | Bulk,Tube |
| Series | 74HC |
| ProductStatus | Active |
| LogicType | Buffer, Non-Inverting |
| NumberofElements | 4 |
| NumberofBitsperElement | 1 |
| OutputType | 3-State |
| Current-OutputHighLow | 7.8mA, 7.8mA |
| Voltage-Supply | 2V ~ 6V |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 14-SOIC (0.154, 3.90mm Width) |
Overview
Description
The SN74HC125D is a high-speed CMOS quad buffer/line driver with 3-state outputs. It is part of the 74HC logic family, known for low power consumption and high noise immunity, making it suitable for a range of digital applications. This specific IC contains four independent buffers, each with a 3-state output, which means the output can be in one of three states: high, low, or high-impedance. The 3-state feature allows multiple outputs to connect to a common bus without interference, as the output can be effectively disconnected.
Each buffer in the SN74HC125D has an input and an output enable pin. The output enable pins control the state of the outputs: when the output enable is low, the corresponding output is enabled and reflects the input logic level; when high, the output is in a high-impedance state. This IC operates over a wide voltage range from 2V to 6V, and it is known for fast switching speeds and reliability. The SN74HC125D is commonly used in digital circuits for buffering and driving signals, particularly where bus interfacing is required.
Each buffer in the SN74HC125D has an input and an output enable pin. The output enable pins control the state of the outputs: when the output enable is low, the corresponding output is enabled and reflects the input logic level; when high, the output is in a high-impedance state. This IC operates over a wide voltage range from 2V to 6V, and it is known for fast switching speeds and reliability. The SN74HC125D is commonly used in digital circuits for buffering and driving signals, particularly where bus interfacing is required.
Equivalent
The SN74HC125D is a quad buffer/line driver with 3-state outputs from Texas Instruments. Equivalent products include the 74HC125 from NXP, ON Semiconductor, and STMicroelectronics. They all offer similar functionality, which includes four independent non-inverting buffers with 3-state outputs. When selecting an equivalent, ensure the package type, voltage, and electrical characteristics match your requirements. Always check the datasheet for detailed specifications to confirm compatibility.
Features
The SN74HC125D is a quad buffer/driver with 3-state outputs designed for high-speed and low power applications. Key features include:
1. High-Speed Operation: It belongs to the HC (High-Speed CMOS) family, offering faster operation compared to standard CMOS devices.
2. 3-State Outputs: Each of the four buffers has a 3-state output, allowing for multiple outputs to be connected to a common bus without interference, controlled by an output enable pin.
3. Wide Voltage Range: Operates with a supply voltage range from 2V to 6V, making it versatile for different applications.
4. Low Power Consumption: Consumes minimal power due to CMOS technology, suitable for battery-operated devices.
5. Input Compatibility: TTL-compatible inputs mean it can interface with devices operating on TTL logic levels.
6. Latch-Up Protection: Offers greater than 100 mA latch-up performance per JESD 78, Class II.
7. Temperature Range: Available in a wide operating temperature range, typically from -40°C to 85°C.
These features make the SN74HC125D suitable for various digital circuit applications that require buffering and driving capabilities with controlled bus interactions.
1. High-Speed Operation: It belongs to the HC (High-Speed CMOS) family, offering faster operation compared to standard CMOS devices.
2. 3-State Outputs: Each of the four buffers has a 3-state output, allowing for multiple outputs to be connected to a common bus without interference, controlled by an output enable pin.
3. Wide Voltage Range: Operates with a supply voltage range from 2V to 6V, making it versatile for different applications.
4. Low Power Consumption: Consumes minimal power due to CMOS technology, suitable for battery-operated devices.
5. Input Compatibility: TTL-compatible inputs mean it can interface with devices operating on TTL logic levels.
6. Latch-Up Protection: Offers greater than 100 mA latch-up performance per JESD 78, Class II.
7. Temperature Range: Available in a wide operating temperature range, typically from -40°C to 85°C.
These features make the SN74HC125D suitable for various digital circuit applications that require buffering and driving capabilities with controlled bus interactions.
Pinout
The SN74HC125D is a quad buffer/line driver with 3-state outputs, part of the 74HC (High-speed CMOS) logic family. It comes in a 14-pin SOIC (Small Outline Integrated Circuit) package. Here’s a breakdown of its pin functions:
1. Pin 1, 4, 10, 13: Output Enable (OE) for each of the four buffers. An active-low input; when high, the corresponding buffer is disabled (high-impedance state).
2. Pin 2, 5, 9, 12: Input pins for the four buffers.
3. Pin 3, 6, 8, 11: Output pins corresponding to each input.
4. Pin 7: Ground (GND) - connected to the negative supply voltage.
5. Pin 14: Supply voltage (VCC) - connected to the positive supply voltage.
The SN74HC125D is utilized in applications requiring isolation and buffering due to its 3-state outputs, allowing multiple outputs to connect to a common bus without interference.
1. Pin 1, 4, 10, 13: Output Enable (OE) for each of the four buffers. An active-low input; when high, the corresponding buffer is disabled (high-impedance state).
2. Pin 2, 5, 9, 12: Input pins for the four buffers.
3. Pin 3, 6, 8, 11: Output pins corresponding to each input.
4. Pin 7: Ground (GND) - connected to the negative supply voltage.
5. Pin 14: Supply voltage (VCC) - connected to the positive supply voltage.
The SN74HC125D is utilized in applications requiring isolation and buffering due to its 3-state outputs, allowing multiple outputs to connect to a common bus without interference.
Manufacturer
The SN74HC125D is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components and integrated circuits. TI is known for its innovation in the field of analog and digital embedded processing and has a broad portfolio that serves various industries, including automotive, industrial, personal electronics, communications, and enterprise systems. The company is headquartered in Dallas, Texas, and is recognized for its contributions to technology development and its role in advancing electronics and computing.
Application
The SN74HC125D is a high-speed CMOS quad buffer/line driver with 3-state outputs, widely used in digital circuits. Its primary applications include signal buffering, voltage level shifting, and bus driving in microcontroller or microprocessor-based systems. It is also used in memory address decoding, data distribution, and interfacing between different logic families. With its capability for tri-state output, it is useful in multiplexed bus systems where multiple devices share the same data lines. Additionally, it finds applications in communication systems, test equipment, and any scenario requiring controlled data flow and improved signal integrity.
Package
The SN74HC125D is a quad buffer/line driver with 3-state outputs. It is typically housed in a small-outline integrated circuit (SOIC) package, specifically the SOIC-14, which features 14 pins. This package type is used for surface-mount technology applications, offering compact size and efficient space utilization on a printed circuit board (PCB).
