Overview
The SN74LVC125ADE4, produced by Texas Instruments, is a quadruple bus buffer gate designed for operation within a voltage range of 1.65V to 3.6V. This device features independent line drivers with 3-state outputs, making it suitable for various applications requiring signal buffering and translation. Each output can be disabled when the associated output-enable (OE) input is high, and the device can operate in mixed 3.3V/5V system environments. The SN74LVC125ADE4 is part of the 74LVC family, known for its low-voltage CMOS logic, and is specified to operate over a temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Min | Max | Unit | Conditions |
|---|---|---|---|---|
| VCC Supply Voltage | 1.65 | 3.6 | V | Operating |
| Operating Temperature Range | –40 | 125 | °C | |
| Input Voltage Range | –0.5 | 6.5 | V | |
| Output Voltage Range | –0.5 | VCC + 0.5 | V | |
| High-Level Input Voltage (VIH) | 0.65 × VCC (1.65V to 1.95V) | 2 (2.7V to 3.6V) | V | VCC = 1.65V to 3.6V |
| Low-Level Input Voltage (VIL) | 0.35 × VCC (1.65V to 1.95V) | 0.8 (2.7V to 3.6V) | V | VCC = 1.65V to 3.6V |
| Propagation Delay Time (tpd) | 4.5 | 11.8 | ns | VCC = 1.8V ± 0.15V, TA = 25°C |
| Output Ground Bounce (VOLP) | < 0.8 | V | VCC = 3.3V, TA = 25°C | |
| Output VOH Undershoot (VOHV) | > 2 | V | VCC = 3.3V, TA = 25°C | |
| Latch-Up Performance | > 250 | mA | Per JESD 17 |
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
- Maximum propagation delay time (tpd) of 4.8ns at 3.3V
- Typical output ground bounce (VOLP) < 0.8V at VCC = 3.3V, TA = 25°C
- Typical output VOH undershoot (VOHV) > 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
- 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 SN74LVC125ADE4?
The SN74LVC125ADE4 operates from 1.65V to 3.6V.
- What is the temperature range for the SN74LVC125ADE4?
The device is specified to operate from –40°C to 125°C.
- Can the inputs of the SN74LVC125ADE4 be driven from 5V devices?
- What is the maximum propagation delay time (tpd) at 3.3V?
The maximum propagation delay time (tpd) at 3.3V is 4.8ns.
- 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 SN74LVC125ADE4?
The latch-up performance exceeds 250mA per JESD 17.
- Does the SN74LVC125ADE4 have ESD protection?
- What are some common applications for the SN74LVC125ADE4?
- Can the SN74LVC125ADE4 be used in mixed 3.3V/5V system environments?
- What is the typical output ground bounce (VOLP) at VCC = 3.3V and TA = 25°C?
- What is the typical output VOH undershoot (VOHV) at VCC = 3.3V and TA = 25°C?
