Overview
The SN74AVC4T245PWT is a 4-bit noninverting bus transceiver produced by Texas Instruments. This device is designed for asynchronous communication between two data buses and features fully configurable dual-rail design, allowing each port to operate over a wide power-supply range from 1.2V to 3.6V. It enables universal low-voltage bidirectional translation between various voltage nodes such as 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The device is optimized for use in applications requiring voltage-level shifting and is packaged in a 16-pin TSSOP (PW) package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | TSSOP (PW) | - |
| Pins | 16 | - |
| Operating Temperature Range | -40 to 85 | °C |
| VCCA Voltage Range | 1.2V to 3.6V | V |
| VCCB Voltage Range | 1.2V to 3.6V | V |
| Data Rate (1.8V to 3.3V translation) | 380 Mbps | Mbps |
| Data Rate (< 1.8V to 3.3V translation) | 200 Mbps | Mbps |
| ESD Protection (Human-Body Model) | 8000 V | V |
| ESD Protection (Machine Model) | 150 V | V |
| ESD Protection (Charged-Device Model) | 1000 V | V |
| Latch-Up Performance | 100 mA per JESD 78, Class II | mA |
Key Features
- Control inputs VIH/VIL levels are referenced to VCCA voltage.
- Fully configurable dual-rail design allows each port to operate over the full 1.2V to 3.6V power-supply range.
- I/Os are 4.6V tolerant.
- Ioff supports partial power-down-mode operation.
- High data rates: up to 380 Mbps for 1.8V to 3.3V translation and lower rates for other voltage translations.
- ESD protection exceeds JESD 22 standards: 8000V Human-Body Model, 150V Machine Model, and 1000V Charged-Device Model.
- Latch-up performance exceeds 100 mA per JESD 78, Class II.
- VCC isolation feature ensures both ports are in high-impedance state if either VCC input is at GND.
Applications
The SN74AVC4T245PWT is suitable for various applications requiring voltage-level translation and asynchronous communication between two data buses. These include:
- Low-voltage bidirectional translation in mixed-voltage systems.
- Interface between different voltage domains in electronic systems.
- Partial power-down applications where Ioff is necessary to prevent current backflow.
- Systems requiring high data rates and robust ESD protection.
Q & A
- What is the primary function of the SN74AVC4T245PWT?
The primary function is to act as a 4-bit noninverting bus transceiver for asynchronous communication between two data buses with configurable voltage-level shifting.
- What is the voltage range for VCCA and VCCB?
Both VCCA and VCCB can operate within the range of 1.2V to 3.6V.
- What are the maximum data rates supported by the device?
The device supports up to 380 Mbps for 1.8V to 3.3V translation and lower rates for other voltage translations.
- What kind of ESD protection does the device offer?
The device offers ESD protection exceeding JESD 22 standards: 8000V Human-Body Model, 150V Machine Model, and 1000V Charged-Device Model.
- How does the Ioff feature work in the SN74AVC4T245PWT?
The Ioff feature supports partial power-down-mode operation by disabling the outputs to prevent damaging current backflow when the device is powered down.
- What is the operating temperature range of the device?
The operating temperature range is from -40°C to 85°C.
- What package type is the SN74AVC4T245PWT available in?
The device is available in a 16-pin TSSOP (PW) package.
- How does the VCC isolation feature work?
If either VCC input is at GND, both ports are placed in the high-impedance state.
- What is the latch-up performance of the device?
The latch-up performance exceeds 100 mA per JESD 78, Class II.
- Is the SN74AVC4T245PWT RoHS compliant?
