Overview
The SN74HC125PWRG4 is a quadruple bus buffer gate with 3-state outputs, manufactured by Texas Instruments. This device is part of the SNx4HC125 series and is designed for a wide range of applications requiring buffered digital signals. Each gate in the device performs the Boolean function Y = A in positive logic, and the outputs can be set to a high-impedance state when the associated output-enable (OE) input is high. This feature makes it suitable for interfacing with system buses and driving multiple loads.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5 | 6 | V |
| VIH High-Level Input Voltage (VCC = 2 V) | 1.5 | V | ||
| VIH High-Level Input Voltage (VCC = 4.5 V) | 3.15 | V | ||
| VIH High-Level Input Voltage (VCC = 6 V) | 4.2 | V | ||
| VIL Low-Level Input Voltage (VCC = 2 V) | 0.5 | V | ||
| VIL Low-Level Input Voltage (VCC = 4.5 V) | 1.35 | V | ||
| VIL Low-Level Input Voltage (VCC = 6 V) | 1.8 | V | ||
| TA Operating Free-Air Temperature | -40 | 85 | °C | |
| ICC Supply Current (VI = VCC or 0, IO = 0) | 80 | µA | ||
| Ci Input Capacitance | 10 | pF | ||
| tPLH Propagation Delay (CL = 50 pF) | 28 | 60 | 90 | ns |
| tPHL Propagation Delay (CL = 50 pF) | 28 | 60 | 90 | ns |
| Package Type | TSSOP (14 pins) | |||
| Package Size | 5.00 mm × 4.40 mm |
Key Features
- Buffered Inputs: Ensures stable and reliable signal transmission.
- Wide Operating Voltage Range: Operates from 2 V to 6 V, making it versatile for various applications.
- Wide Operating Temperature Range: Functional from -40°C to 85°C, suitable for harsh environments.
- 3-State Outputs: Outputs can be set to a high-impedance state, allowing for bus interfacing and multiple load driving.
- Low Power Consumption: Maximum supply current of 80 µA, reducing power consumption.
- High-Current Outputs: Capable of driving up to 15 LSTTL loads and delivering ±6 mA at 5 V.
- Low Input Current: Maximum input current of 1 µA, minimizing the load on the input signal.
Applications
- TV Set-Top Boxes and DVRs: Used for signal buffering and bus interfacing.
- E-meters: Employed in smart grid applications for accurate signal transmission.
- Smart Grids: Transmission Line Monitoring: Utilized for reliable signal buffering in monitoring systems.
- Printers and Computer Peripherals: Enhances signal integrity in peripheral devices.
- Building Security: Control Panels: Used in security systems for stable signal transmission.
- IP Phones: Ensures reliable signal buffering in communication devices.
- Test and Measurement: Range Readers: Applied in measurement instruments for accurate signal handling.
Q & A
- What is the operating voltage range of the SN74HC125PWRG4?
The operating voltage range is from 2 V to 6 V.
- What is the maximum supply current of the SN74HC125PWRG4?
The maximum supply current is 80 µA.
- What is the package type and size of the SN74HC125PWRG4?
The package type is TSSOP with 14 pins, and the size is 5.00 mm × 4.40 mm.
- Can the SN74HC125PWRG4 drive multiple loads?
Yes, it can drive up to 15 LSTTL loads and deliver ±6 mA at 5 V.
- What is the typical propagation delay of the SN74HC125PWRG4?
The typical propagation delay is around 60 ns for CL = 50 pF.
- How do I ensure the high-impedance state during power-up or power-down?
OE should be tied to VCC through a pull-up resistor to ensure the high-impedance state.
- What are some common applications of the SN74HC125PWRG4?
Common applications include TV set-top boxes, e-meters, smart grid transmission line monitoring, printers, computer peripherals, building security control panels, IP phones, and test and measurement devices.
- What is the operating temperature range of the SN74HC125PWRG4?
The operating temperature range is from -40°C to 85°C.
- Is the SN74HC125PWRG4 RoHS compliant?
Yes, the SN74HC125PWRG4 is RoHS compliant and free of Sb/Br.
- How many independent buffers does the SN74HC125PWRG4 contain?
The SN74HC125PWRG4 contains four independent buffers with 3-state outputs.
