Overview
The SN74LV125A-Q1 is a quadruple bus buffer gate designed by Texas Instruments for operation within a voltage range of 2-V to 5.5-V VCC. This device is particularly suited for automotive applications and features independent line drivers with 3-state outputs. Each output can be disabled by setting the associated output-enable (OE) input to high, ensuring a high-impedance state during power-up or power-down. The device supports mixed-mode voltage operation on all ports and includes Ioff circuitry for partial-power-down mode, preventing damaging current backflow when the device is powered down.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage Range) | 2 | 5.5 | V | |
| VI (Input Voltage Range) | -0.5 | 7 | V | |
| VO (Output Voltage Range) | -0.5 | VCC + 0.5 | V | |
| IO (Continuous Output Current) | ±35 | mA | ||
| TA (Operating Free-Air Temperature) | -40 | 125 | °C | |
| tpd (Propagation Delay Time, A to Y) | 4.3 | 7.5 | 10 | ns |
| ten (Enable Time, OE to Y) | 4.4 | 7.1 | 10 | ns |
| tdis (Disable Time, OE to Y) | 4 | 8.8 | 11 | ns |
| tsk(o) (Output Skew) | 1 | ns |
Key Features
- Qualified for automotive applications
- 2-V to 5.5-V VCC operation
- Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C
- Typical VOHV (Output VOH Undershoot) > 2.3 V at VCC = 3.3 V, TA = 25°C
- Support for mixed-mode voltage operation on all ports
- Ioff supports partial-power-down mode operation
- Independent line drivers with 3-state outputs
- High-impedance state during power-up or power-down
Applications
The SN74LV125A-Q1 is suitable for a variety of applications, including:
- Automotive systems requiring robust and reliable logic functions
- Mixed-voltage systems where different voltage levels need to be managed
- Partial-power-down applications to reduce power consumption
- High-speed data transmission and buffering in digital circuits
- Industrial control systems and automation
Q & A
- What is the operating voltage range of the SN74LV125A-Q1?
The SN74LV125A-Q1 operates within a voltage range of 2-V to 5.5-V VCC.
- Is the SN74LV125A-Q1 suitable for automotive applications?
- What is the purpose of the output-enable (OE) input?
The output-enable (OE) input is used to disable the output, setting it to a high-impedance state when high.
- Does the SN74LV125A-Q1 support mixed-mode voltage operation?
- What is the typical propagation delay time for the SN74LV125A-Q1 at VCC = 5 V?
The typical propagation delay time (tpd) from A to Y at VCC = 5 V is 7.5 ns.
- How does the Ioff circuitry function in the SN74LV125A-Q1?
The Ioff circuitry disables the outputs to prevent damaging current backflow when the device is powered down.
- What is the maximum continuous output current for the SN74LV125A-Q1?
The maximum continuous output current (IO) is ±35 mA.
- What is the operating temperature range for the SN74LV125A-Q1?
The operating free-air temperature range is from -40°C to 125°C.
- What package type is the SN74LV125A-Q1 available in?
The device is available in a VQFN (Very Thin Quad Flat No-Lead) package.
- How many pins does the SN74LV125A-Q1 have?
The SN74LV125A-Q1 has 14 pins.
