Overview
The SN74LVCC4245ADWR is an octal dual-supply bus transceiver produced by Texas Instruments. This device is designed for asynchronous communication between data buses and supports voltage translation between 3.3-V and 5-V environments. It features two separate power-supply rails, VCCA and VCCB, allowing for flexible voltage configurations. The device can transmit data from the A bus to the B bus or from the B bus to the A bus, controlled by the direction-control (DIR) input. Additionally, the output-enable (OE) input can be used to disable the device, effectively isolating the buses.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Channel Type | Bidirectional | |
| Channels per Circuit | 8 | |
| Mounting Type | Surface Mount | |
| Number of Circuits | 1 | |
| Operating Temperature | -40°C to 85°C (TA) | |
| Output Type | Tri-State, Non-Inverted | |
| Package | 24-SOIC (0.295", 7.50mm Width) | |
| Translator Type | Voltage Level | |
| Voltage Range (VCCA) | 3 V to 5 V | |
| Voltage Range (VCCB) | 2.7 V to 3.6 V | |
| Supply Voltage Range | -0.5 V to 6 V | |
| Input Voltage Range | -0.5 V to VCCA + 0.5 V (A port), -0.5 V to VCCB + 0.5 V (B port) | |
| Output Voltage Range | -0.5 V to VCCA + 0.5 V (A port), -0.5 V to VCCB + 0.5 V (B port) | |
| Continuous Output Current | ±50 mA | |
| Continuous Current through VCCA, VCCB, or GND | ±100 mA | |
| Propagation Delay (A to B) | 1 ns to 7.1 ns | |
| Propagation Delay (B to A) | 1 ns to 6.8 ns |
Key Features
- Bidirectional data transmission between two buses (A and B) controlled by the DIR input.
- Supports voltage translation between 3.3-V and 5-V environments.
- Tri-state, non-inverting outputs.
- Output-enable (OE) input to disable the device and isolate the buses.
- Operating temperature range from -40°C to 85°C.
- Available in various packages including SOIC, SSOP, SOP, and TSSOP.
Applications
The SN74LVCC4245ADWR is suitable for a variety of applications requiring voltage level translation and bidirectional data communication. These include:
- Interface between different voltage domains in mixed-voltage systems.
- Data communication in embedded systems, industrial control systems, and consumer electronics.
- Voltage level shifting in digital signal processing and communication systems.
- Use in PCB designs where different voltage levels are required for different components.
Q & A
- What is the primary function of the SN74LVCC4245ADWR?
The primary function is to act as a bidirectional bus transceiver, enabling data transmission between two buses with different voltage levels. - What voltage ranges does the SN74LVCC4245ADWR support?
The device supports voltage ranges from 3 V to 5 V for VCCA and 2.7 V to 3.6 V for VCCB. - How is the direction of data transmission controlled?
The direction of data transmission is controlled by the direction-control (DIR) input. - What is the purpose of the output-enable (OE) input?
The OE input is used to disable the device, effectively isolating the buses. - What are the available package types for the SN74LVCC4245ADWR?
The device is available in SOIC, SSOP, SOP, and TSSOP packages. - What is the operating temperature range of the SN74LVCC4245ADWR?
The operating temperature range is from -40°C to 85°C. - What is the maximum continuous output current of the SN74LVCC4245ADWR?
The maximum continuous output current is ±50 mA. - Can the SN74LVCC4245ADWR be used in safety-critical applications?
No, it is not recommended for use in safety-critical applications without proper evaluation and validation. - What is the propagation delay of the SN74LVCC4245ADWR?
The propagation delay ranges from 1 ns to 7.1 ns for A to B and 1 ns to 6.8 ns for B to A. - Is the SN74LVCC4245ADWR RoHS compliant?
Yes, the device is RoHS compliant.
