Overview
The SN74LVC125ADR, 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 versatile for various digital logic applications. Each output can be disabled when the associated output-enable (OE) input is high, and the device ensures a high-impedance state during power-up or power-down by tying OE to VCC through a pull-up resistor. The SN74LVC125ADR is suitable for use in mixed 3.3V/5V system environments, as it can accept input voltages up to 5.5V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 1.65 to 3.6 | V |
| Operating Temperature Range | –40 to 125 | °C |
| Input Voltage Range | –0.5 to 5.5 | V |
| Output Voltage Range | –0.5 to VCC + 0.5 | V |
| Maximum Propagation Delay (tpd) at 3.3V | 4.8 | ns |
| Typical Output Ground Bounce (VOLP) at VCC = 3.3V, TA = 25°C | < 0.8 | V |
| Typical Output VOH Undershoot (VOHV) at VCC = 3.3V, TA = 25°C | > 2 | V |
| Latch-Up Performance | > 250 mA per JESD 17 | mA |
| Package Types | SOIC, SSOP, SOP, 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 up to 5.5V
- Maximum propagation delay (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 standards
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 SN74LVC125ADR?
The SN74LVC125ADR operates from 1.65V to 3.6V.
- What is the maximum propagation delay (tpd) at 3.3V for the SN74LVC125ADR?
The maximum propagation delay (tpd) at 3.3V is 4.8ns.
- Can the SN74LVC125ADR 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?
The typical output ground bounce (VOLP) is less than 0.8V at VCC = 3.3V and TA = 25°C.
- What is the latch-up performance of the SN74LVC125ADR?
The latch-up performance exceeds 250mA per JESD 17.
- What are the package types available for the SN74LVC125ADR?
The SN74LVC125ADR is available in SOIC, SSOP, SOP, TSSOP, and VQFN packages.
- What is the operating temperature range of the SN74LVC125ADR?
The operating temperature range is from –40°C to 125°C.
- Does the SN74LVC125ADR have ESD protection?
- How should the OE input be managed during power-up or power-down to ensure a high-impedance state?
The OE input should be tied to VCC through a pull-up resistor to ensure a high-impedance state during power-up or power-down.
- What are some typical applications of the SN74LVC125ADR?
Typical applications include power monitoring units, wireless battery monitoring, remote electrical tilt units, and various wireless infrastructure equipment.
