Overview
The SN74LVCC4245ADW is an octal dual-supply bus transceiver produced by Texas Instruments. This device is designed for asynchronous communication between data buses and supports bidirectional voltage translation. It features two separate power-supply rails, allowing it to translate signals between 3.3-V and 5-V environments. The transceiver is part of the 74LVCC series and is particularly useful in systems where different voltage levels need to be bridged efficiently.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage - VCCA | 4.5 to 5.5 | V |
| Voltage - VCCB | 2.7 to 5.5 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | 24-SOIC (DW) | - |
| Number of Channels | 8 | - |
| Output Type | Tri-State, Non-Inverted | - |
| High-Level Output Current | -24 mA | mA |
| Low-Level Output Current | 24 mA | mA |
| Propagation Delay Time (A to B) | 1 to 7.1 ns | ns |
| ESD Protection | 2000-V Human-Body Model, 1000-V Charged-Device Model | - |
Key Features
- Bidirectional Voltage Translator: Supports translation between 3.3-V and 5-V environments.
- Configurable Output Voltage: Adjustable output voltage based on the supply rails.
- 3-State Outputs: Outputs can be set to a high-impedance state to isolate the buses.
- Control Inputs: Direction-control (DIR) and output-enable (OE) inputs for managing data flow.
- Latch-Up Performance: Exceeds 250 mA per JESD 17.
- ESD Protection: Exceeds JESD 22 standards with 2000-V Human-Body Model and 1000-V Charged-Device Model.
Applications
The SN74LVCC4245ADW is suitable for various applications where voltage level translation is necessary, such as:
- Mixed-Voltage Systems: Systems that operate with both 3.3-V and 5-V logic levels.
- Interface Translation: Translating signals between different voltage domains in a system.
- Embedded Systems: Used in embedded systems where different components may operate at different voltage levels.
- Industrial Automation: In automation systems where different modules may have different voltage requirements.
Q & A
- What is the primary function of the SN74LVCC4245ADW?
The primary function is to act as a bidirectional voltage translator between 3.3-V and 5-V environments.
- What are the voltage ranges for VCCA and VCCB?
VCCA ranges from 4.5 V to 5.5 V, and VCCB ranges from 2.7 V to 5.5 V.
- What is the operating temperature range of the SN74LVCC4245ADW?
The operating temperature range is from -40°C to 85°C.
- What type of package does the SN74LVCC4245ADW come in?
The device comes in a 24-pin SOIC (DW) package.
- How many channels does the SN74LVCC4245ADW have?
The device has 8 channels.
- What is the propagation delay time for the SN74LVCC4245ADW?
The propagation delay time from A to B is between 1 to 7.1 ns.
- Does the SN74LVCC4245ADW have ESD protection?
Yes, it exceeds JESD 22 standards with 2000-V Human-Body Model and 1000-V Charged-Device Model.
- What are the control inputs for the SN74LVCC4245ADW?
The control inputs are the direction-control (DIR) and output-enable (OE) inputs.
- Can the outputs of the SN74LVCC4245ADW be set to a high-impedance state?
Yes, the outputs can be set to a high-impedance state using the OE input.
- What are some common applications for the SN74LVCC4245ADW?
Common applications include mixed-voltage systems, interface translation, embedded systems, and industrial automation.
