Overview
The SN74LVC125APWRE4 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 system environments. 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 component is particularly useful in mixed 3.3V/5V system environments due to its ability to accept input voltages up to 5.5V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 1.65V to 3.6V | V |
| Operating Temperature Range | –40°C to 85°C and –40°C to 125°C | °C |
| Input Voltage Range | –0.5V to 6.5V | V |
| Output Voltage Range | –0.5V to VCC + 0.5V | V |
| Maximum Propagation Delay (tpd) at 3.3V | 4.8ns | ns |
| Typical Output Ground Bounce (VOLP) | < 0.8V at VCC = 3.3V, TA = 25°C | V |
| Typical Output VOH Undershoot (VOHV) | > 2V at VCC = 3.3V, TA = 25°C | V |
| Latch-Up Performance | > 250mA per JESD 17 | mA |
| ESD Protection | > 2000-V Human-Body Model, > 200-V Machine Model, > 1000-V Charged-Device Model | V |
| Package Type | TSSOP (PW) | |
| Pins | 14 |
Key Features
- 3-State outputs with separate OE for all 4 buffers
- Operates from 1.65V to 3.6V
- Inputs accept voltages up to 5.5V, allowing use in mixed 3.3V/5V system environments
- Maximum propagation delay of 4.8ns at 3.3V
- Typical output ground bounce < 0.8V and output VOH undershoot > 2V at VCC = 3.3V, TA = 25°C
- Latch-up performance exceeds 250mA per JESD 17
- ESD protection exceeds JESD 22 standards
- Supports partial-power-down mode operation (Ioff)
Applications
- Flow Meters
- Solid State Drives (SSDs): Enterprise
- Power Over Ethernet (PoE)
- Programmable Logic Controllers
- Motor Drives and Controls
- Electronic Points of Sale
Q & A
- What is the operating voltage range of the SN74LVC125APWRE4?
The operating voltage range is 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 of the SN74LVC125APWRE4 be driven from 5V devices?
- 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.
- What is the latch-up performance of the SN74LVC125APWRE4?
The latch-up performance exceeds 250mA per JESD 17.
- What kind of ESD protection does the SN74LVC125APWRE4 have?
The device has ESD protection exceeding JESD 22 standards: 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
- In what package type is the SN74LVC125APWRE4 available?
The device is available in a TSSOP (PW) package with 14 pins.
- What are some common applications of the SN74LVC125APWRE4?
Common applications include flow meters, solid state drives (SSDs), power over Ethernet (PoE), programmable logic controllers, motor drives and controls, and electronic points of sale.
- How should the output-enable (OE) input be managed during power up or power down?
The OE input should be tied to VCC through a pullup resistor to ensure the high-impedance state during power up or power down.
- What is the significance of the Ioff feature in the SN74LVC125APWRE4?
The Ioff feature supports partial-power-down mode operation, allowing for power savings when parts of the system are not in use.
