Overview
The 74LVC245ADTR2G is an octal bus transceiver with 3-state outputs, manufactured by onsemi. This device is designed to facilitate communication between two different voltage level systems, making it ideal for mixed 3.3 V and 5 V environments. It features an output enable (OE) and a direction control (DIR) input, allowing for flexible data flow direction. The 74LVC245ADTR2G is part of the LVC (Low Voltage CMOS) family, known for its low power consumption and compatibility with TTL logic levels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 1.2 to 3.6 | V |
| Output Drive Capability | ±24 | mA |
| Propagation Delay (A to B) | 2.9 | ns |
| Propagation Delay (B to A) | 2.9 | ns |
| Output Enable Time (OE to B) | 5.2 to 9.5 | ns |
| Output Enable Time (OE to A) | 5.2 to 9.5 | ns |
| Maximum Operating Frequency | 175 | MHz |
| Operating Temperature Range | -40 to +125 | °C |
| Package Type | SO20 (SOT163-1) |
Key Features
- Bi-directional Interface: Allows data flow between 3.3 V and 5 V buses.
- Output Enable (OE): High on OE causes outputs to assume a high-impedance OFF-state.
- Direction Control (DIR): Determines the direction of data flow.
- Low Power Consumption: CMOS technology for reduced power usage.
- TTL Compatibility: Direct interface with TTL logic levels.
- Overvoltage Tolerant Inputs: Inputs can be driven from either 3.3 V or 5 V devices, tolerant up to 5.5 V.
- IOFF Circuitry: Prevents backflow current during partial power-down.
- ESD Protection: HBM and CDM protection exceeding 2000 V and 1000 V respectively.
- RoHS Compliant: Pb-free, halogen-free, and BFR-free.
Applications
The 74LVC245ADTR2G is suitable for various applications requiring interface between different voltage level systems, including:
- Mixed Voltage Systems: Ideal for environments where both 3.3 V and 5 V devices coexist, such as in laptop computers with 3.3 V CPUs and 5 V LCD displays.
- Automotive Systems: AEC-Q100 qualified and PPAP capable, making it suitable for automotive applications.
- Industrial and Consumer Electronics: Used in applications requiring low power consumption and high reliability.
- Medical Devices: Suitable for medical equipment that requires precise voltage level translation.
Q & A
- What is the primary function of the 74LVC245ADTR2G?
The primary function is to act as an octal bus transceiver with 3-state outputs, facilitating bi-directional data flow between 3.3 V and 5 V buses.
- What is the supply voltage range for the 74LVC245ADTR2G?
The supply voltage range is from 1.2 V to 3.6 V.
- How does the output enable (OE) input function?
A high on the OE input causes the outputs to assume a high-impedance OFF-state.
- What is the maximum operating frequency of the 74LVC245ADTR2G?
The maximum operating frequency is 175 MHz.
- Is the 74LVC245ADTR2G RoHS compliant?
- What type of ESD protection does the 74LVC245ADTR2G have?
The device has HBM and CDM protection exceeding 2000 V and 1000 V respectively.
- What is the operating temperature range for the 74LVC245ADTR2G?
The operating temperature range is from -40°C to +125°C.
- What package type is the 74LVC245ADTR2G available in?
The device is available in SO20 (SOT163-1) package.
- Is the 74LVC245ADTR2G suitable for automotive applications?
- What is the purpose of the IOFF circuitry in the 74LVC245ADTR2G?
The IOFF circuitry prevents backflow current during partial power-down.
