Overview
The SN74LVC125ADTG4, produced by Texas Instruments, is a quadruple bus buffer gate with 3-state outputs. This device is designed for operation within a wide voltage range of 1.65V to 3.6V, making it versatile for various applications. Each buffer has an independent output-enable (OE) input, allowing for precise control over the output states. The device is suitable for use in mixed 3.3V/5V system environments due to its ability to accept input voltages up to 5.5V. This feature makes it an excellent choice for voltage translation and buffering in complex digital systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage Range | 1.65 | - | 3.6 | V |
| VI Input Voltage Range | -0.5 | - | 6.5 | V |
| VO Output Voltage Range | -0.5 | - | VCC + 0.5 | V |
| IOH High-Level Output Current | -4 (at 1.8V) | - | -24 (at 3V) | mA |
| IOL Low-Level Output Current | 4 (at 1.8V) | - | 24 (at 3V) | mA |
| TJ Junction Temperature | -65 | - | 150 | °C |
| Tstg Storage Temperature | -65 | - | 150 | °C |
| TA Operating Free-Air Temperature | -40 | - | 125 | °C |
| tpd Propagation Delay (A to Y) | 1 | - | 13.8 | ns |
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 can be driven from either 3.3V or 5V devices, allowing for mixed voltage system compatibility
- Independent line drivers with high-impedance state during power up or power down
- Low power dissipation and high-speed operation
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 SN74LVC125ADTG4?
The SN74LVC125ADTG4 operates from 1.65V to 3.6V.
- What is the purpose of the output-enable (OE) input?
The OE input controls the output state; when OE is high, the output is disabled, and when OE is low, the output passes the data from the A input to the Y output.
- Can the SN74LVC125ADTG4 be used in mixed 3.3V/5V systems?
- What is the maximum propagation delay from input A to output Y?
The maximum propagation delay from input A to output Y is approximately 13.8 ns.
- What is the recommended storage temperature range for the SN74LVC125ADTG4?
The recommended storage temperature range is from –65°C to 150°C.
- What are some typical applications of the SN74LVC125ADTG4?
Typical applications include power monitoring units, wireless battery monitoring, remote electrical tilt units, and various wireless infrastructure equipment.
- How should the OE input be configured 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 the high-impedance state during power up or power down.
- What is the maximum continuous output current for the SN74LVC125ADTG4?
The maximum continuous output current is ±50 mA.
- What is the maximum power dissipation for the SN74LVC125ADTG4?
The maximum power dissipation is 500 mW.
- What are the available package types for the SN74LVC125ADTG4?
The device is available in various packages including BQA (WQFN), D (SOIC), DB (SSOP), NS (SOP), PW (TSSOP), and RGY (VQFN).
