Overview
The SN74LVC125APWT is a quadruple bus buffer gate produced by Texas Instruments. This device is designed for operation within a voltage range of 1.65V to 3.6V, making it versatile for various applications. It features independent line drivers with 3-state outputs, allowing each output to be disabled when the associated output-enable (OE) input is high. This component is suitable for use in mixed 3.3V/5V system environments due to its ability to accept input voltages up to 5.5V.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TSSOP-14 |
| Number of Pins | 14 |
| Operating Temperature Range | -40°C to 125°C |
| Supply Voltage Range | 1.65V to 3.6V |
| Input Voltage Range | -0.5V to 6.5V |
| Output Type | 3-State, Push-Pull |
| Propagation Delay | 4.6 ns (typical at 3.3V) |
| High Level Output Current | -24 mA |
| Low Level Output Current | 24 mA |
| Power Dissipation | 500 mW |
| Logic Family | LVC |
| RoHS Status | Compliant |
Key Features
- 3-State outputs with separate OE for all 4 buffers
- Operates from 1.65V to 3.6V supply voltage
- Specified from -40°C to 85°C and -40°C to 125°C operating temperature range
- Inputs accept voltages up to 5.5V, making it suitable for mixed 3.3V/5V systems
- Maximum propagation delay of 4.8ns at 3.3V
- Typical VOLP (output ground bounce) < 0.8V and VOHV (output VOH undershoot) > 2V at VCC = 3.3V, TA = 25°C
- Latch-up performance exceeds 250mA per JESD 17
Applications
- Mixed 3.3V/5V system environments
- Automotive applications (qualified for automotive use in the SN74LVC125A-Q1 variant)
- General-purpose buffering and signal translation
- High-speed digital circuits requiring low propagation delay
- Systems requiring 3-state output control
Q & A
- What is the operating voltage range of the SN74LVC125APWT?
The operating voltage range is from 1.65V to 3.6V.
- What is the maximum operating temperature of the SN74LVC125APWT?
The maximum operating temperature is 125°C.
- How many buffers does the SN74LVC125APWT have?
The device has four independent buffers.
- What is the maximum propagation delay at 3.3V?
The maximum propagation delay at 3.3V is 4.8ns.
- Can the inputs accept voltages higher than the supply voltage?
- What is the typical output ground bounce and VOH undershoot at 3.3V?
The typical output ground bounce (VOLP) is less than 0.8V, and the VOH undershoot is greater than 2V at VCC = 3.3V, TA = 25°C.
- Is the SN74LVC125APWT RoHS compliant?
- What is the logic family of the SN74LVC125APWT?
The logic family is LVC.
- How many output states does each buffer have?
Each buffer has 3-state outputs.
- What is the recommended way to ensure high-impedance state during power up or power down?
The OE should be tied to VCC through a pull-up resistor.
