Overview
The SN74HC125NSR is a quad bus buffer gate integrated circuit (IC) manufactured by Texas Instruments. This IC belongs to the HC (High-Speed CMOS) logic family, designed to provide buffering and signal isolation in digital circuits. It features four independent buffer gates with 3-state outputs, making it ideal for applications requiring bus interfacing or signal gating. The SN74HC125NSR is widely used in industrial, automotive, and consumer electronics due to its robust performance, low power consumption, and compatibility with TTL logic levels. Its compact SOIC package and high-speed operation make it a competitive choice for modern digital systems.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Family | HC | - | High-Speed CMOS |
| Number of Channels | 4 | - | Quad buffer |
| Supply Voltage | 2 V to 6 V | V | Wide operating range |
| Output Type | 3-State | - | High-impedance state |
| Propagation Delay | 13 ns | ns | Typical at 5 V |
| Operating Temperature | -40°C to 85°C | °C | Industrial range |
| Package | SOIC-14 | - | Surface mount |
| Input Logic Level | TTL Compatible | - | Ensures compatibility |
| Current - Quiescent | 4 µA | µA | Low power consumption |
| Mounting Type | Surface Mount | - | Suitable for PCB assembly |
Key Features
- Quad Buffer Gates: Provides four independent buffer channels for signal isolation and amplification.
- 3-State Outputs: Enables high-impedance state for bus interfacing and signal gating.
- Wide Operating Voltage: Supports supply voltages from 2 V to 6 V, ensuring compatibility with various systems.
- Low Power Consumption: Ideal for battery-powered and energy-efficient applications.
- High-Speed Operation: Propagation delay of 13 ns ensures rapid signal processing.
- TTL Compatibility: Ensures seamless integration with TTL logic systems.
- Industrial Temperature Range: Operates reliably in harsh environments.
Applications
The SN74HC125NSR is widely used in various digital systems, including:
- Industrial Automation: Signal buffering and isolation in control systems.
- Automotive Electronics: Interface circuits for sensors and actuators.
- Consumer Electronics: Signal conditioning in audio and video devices.
- Communication Systems: Bus interfacing in data transmission modules.
- Embedded Systems: Signal gating and buffering in microcontrollers and FPGAs.
Q & A
1. What is the purpose of the 3-state output in the SN74HC125NSR?
The 3-state output allows the buffer to enter a high-impedance state, enabling multiple devices to share a common bus without interference.
2. What is the operating voltage range of the SN74HC125NSR?
The SN74HC125NSR operates within a voltage range of 2 V to 6 V.
3. Is the SN74HC125NSR compatible with TTL logic levels?
Yes, the SN74HC125NSR is fully compatible with TTL logic levels.
4. What is the typical propagation delay of the SN74HC125NSR?
The typical propagation delay is 13 ns at a supply voltage of 5 V.
5. Can the SN74HC125NSR be used in automotive applications?
Yes, the SN74HC125NSR is suitable for automotive electronics due to its robust performance and industrial temperature range.
6. What is the package type of the SN74HC125NSR?
The SN74HC125NSR is available in a SOIC-14 surface-mount package.
7. How many buffer gates are included in the SN74HC125NSR?
The SN74HC125NSR contains four independent buffer gates.
8. What is the quiescent current of the SN74HC125NSR?
The quiescent current is typically 4 µA, ensuring low power consumption.
9. What is the operating temperature range of the SN74HC125NSR?
The SN74HC125NSR operates within a temperature range of -40°C to 85°C.
10. Is the SN74HC125NSR suitable for battery-powered devices?
Yes, its low power consumption makes it ideal for battery-powered and energy-efficient applications.
