Overview
The SN74LVC125ADG4 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 electronic systems. 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 functionality is particularly useful in mixed 3.3V/5V system environments, enabling the device to act as a voltage translator.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 1.65 to 3.6 | V |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | SOIC (D) | - |
| Number of Pins | 14 | - |
| Maximum Propagation Delay (tpd) at 3.3V | 4.8 | ns |
| Typical VOLP (Output Ground Bounce) at VCC = 3.3V, TA = 25°C | < 0.8 | V |
| Typical VOHV (Output VOH Undershoot) at VCC = 3.3V, TA = 25°C | > 2 | V |
| Latch-Up Performance | > 250 | mA (per JESD 17) |
| Input Voltage Acceptance | Up to 5.5 | V |
Key Features
- 3-State outputs
- Separate OE (output-enable) for all 4 buffers
- Operates from 1.65V to 3.6V
- Specified from -40°C to 85°C and -40°C to 125°C
- Inputs accept voltages up to 5.5V
- Maximum propagation delay of 4.8ns at 3.3V
- Typical VOLP (output ground bounce) < 0.8V at VCC = 3.3V, TA = 25°C
- Typical VOHV (output VOH undershoot) > 2V at VCC = 3.3V, TA = 25°C
- Latch-up performance exceeds 250mA per JESD 17
- ESD protection exceeds JESD 22 (2000-V Human-Body Model, 200-V Machine Model)
Applications
The SN74LVC125ADG4 is suitable for a variety of applications, including:
- Mixed 3.3V/5V system environments where voltage translation is necessary
- Bus buffering and signal amplification in digital circuits
- High-speed data transmission systems requiring low propagation delay
- Systems requiring 3-state outputs for controlling data flow
- Industrial and automotive applications due to its wide operating temperature range
Q & A
- What is the operating voltage range of the SN74LVC125ADG4?
The SN74LVC125ADG4 operates within a voltage range of 1.65V to 3.6V.
- How many buffers does the SN74LVC125ADG4 have?
The device features 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 VCC?
Yes, the inputs can accept voltages up to 5.5V.
- How should the OE input be managed during power up or power down?
The OE input should be tied to VCC through a pull-up resistor to ensure the high-impedance state.
- What is the latch-up performance of the SN74LVC125ADG4?
The latch-up performance exceeds 250mA per JESD 17.
- What type of ESD protection does the SN74LVC125ADG4 have?
The device has ESD protection exceeding JESD 22 (2000-V Human-Body Model, 200-V Machine Model).
- What are the typical output ground bounce and VOH undershoot values?
The typical VOLP (output ground bounce) is less than 0.8V, and the typical VOHV (output VOH undershoot) is greater than 2V at VCC = 3.3V, TA = 25°C.
- In what type of environments can the SN74LVC125ADG4 be used?
The device can be used in mixed 3.3V/5V system environments and operates over a temperature range of -40°C to 125°C.
- What is the package type and pin count of the SN74LVC125ADG4?
The device is available in a SOIC (D) package with 14 pins.
