Overview
The SN74LVC125ADB is a quadruple bus buffer gate produced by Texas Instruments. This device is designed for operation over a wide voltage range of 1.65V to 3.6V, making it versatile for various applications. It features independent line drivers with 3-state outputs, which can be disabled by the associated output-enable (OE) input. This component is suitable for use in mixed 3.3V/5V system environments, allowing it to act as a translator between different voltage levels.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VCC Supply Voltage Range | 1.65 | 3.6 | V |
| Operating Temperature Range | -40 | 125 | °C |
| Input Voltage Range | 0 | 5.5 | V |
| Output Voltage Range | 0 | VCC + 0.5 | V |
| 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 | - |
| Package Types | - | SOIC, SSOP, TSSOP, VQFN | - |
Key Features
- 3-State outputs
- Separate OE 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 to 5.5V
- Max tpd 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
Applications
- Power monitoring units (PMU) – Wireless battery monitoring
- Remote electrical tilt units (RET) – Remote radio units (RRU)
- Tower mounted amplifiers (TMA)
- Vector signal analyzers and generators
- Video conferencing: IP-based HD
- WiMAX and wireless infrastructure equipment
- Wireless communications testers
- xDSL modems and DSLAM
Q & A
- What is the operating voltage range of the SN74LVC125ADB?
The SN74LVC125ADB operates from 1.65V to 3.6V.
- What is the maximum propagation delay at 3.3V?
The maximum propagation delay at 3.3V is 4.8ns.
- Can the inputs be driven from 5V devices?
- What is the typical output ground bounce at VCC = 3.3V, TA = 25°C?
The typical output ground bounce is less than 0.8V.
- What is the latch-up performance of the SN74LVC125ADB?
The latch-up performance exceeds 250mA per JESD 17.
- What are the available package types for the SN74LVC125ADB?
The available package types include SOIC, SSOP, TSSOP, and VQFN.
- What is the operating temperature range of the SN74LVC125ADB?
The operating temperature range is from –40°C to 125°C.
- Can the SN74LVC125ADB be used in mixed 3.3V/5V system environments?
- What is the typical VOHV (output VOH undershoot) at VCC = 3.3V, TA = 25°C?
The typical VOHV is greater than 2V.
- What are some common applications of the SN74LVC125ADB?
