Overview
The SN74AVC4T245RSVR-NT, produced by Texas Instruments, is a 4-bit noninverting bus transceiver designed for universal low-voltage bidirectional translation between various voltage nodes. This device uses two separate configurable power-supply rails, allowing each port to operate over the full 1.2V to 3.6V power-supply range. It is optimized for asynchronous communication between two data buses and supports partial-power-down applications using Ioff circuitry. The device is particularly useful in systems requiring voltage translation between different voltage domains, such as in mixed-voltage systems and power management applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-UQFN (RSV) |
| Pins | 16 |
| Operating Temperature Range | -40°C to 85°C |
| Power Supply Range | 1.2V to 3.6V (VCCA and VCCB) |
| Data Rates | 380Mbps (1.8V to 3.3V translation), 200Mbps (< 1.8V to 3.3V translation), 200Mbps (translate to 2.5V or 1.8V), 150Mbps (translate to 1.5V), 100Mbps (translate to 1.2V) |
| ESD Protection | 8000V Human-Body Model, 150V Machine Model, 1000V Charged-Device Model |
| Latch-up Performance | Exceeds 100mA per JESD 78, Class II |
Key Features
- Fully configurable dual-rail design allowing each port to operate over the full 1.2V to 3.6V power-supply range.
- Control inputs VIH/VIL levels are referenced to VCCA voltage.
- I/Os are 4.6V tolerant.
- Ioff supports partial power-down-mode operation.
- VCC isolation feature ensures both ports are in the high-impedance state if either VCC input is at GND.
- ESD protection exceeds JESD 22 standards.
- Latch-up performance exceeds 100mA per JESD 78, Class II.
Applications
The SN74AVC4T245RSVR-NT is suitable for various applications requiring voltage translation between different voltage domains. These include mixed-voltage systems, power management applications, and any system where asynchronous communication between two data buses is necessary. It is particularly useful in embedded systems, industrial control systems, and consumer electronics where multiple voltage levels are present.
Q & A
- What is the primary function of the SN74AVC4T245RSVR-NT? The primary function is to act as a 4-bit noninverting bus transceiver for universal low-voltage bidirectional translation between various voltage nodes.
- What is the operating temperature range of the SN74AVC4T245RSVR-NT? The operating temperature range is -40°C to 85°C.
- What are the supported power supply ranges for VCCA and VCCB? Both VCCA and VCCB can operate over the full 1.2V to 3.6V power-supply range.
- What are the maximum data rates supported by the device? The device supports data rates up to 380Mbps for 1.8V to 3.3V translation, and lower rates for other voltage translations.
- Does the device support partial power-down mode? Yes, the device supports partial power-down mode using Ioff circuitry.
- What is the ESD protection level of the device? The device exceeds JESD 22 standards with 8000V Human-Body Model, 150V Machine Model, and 1000V Charged-Device Model protection.
- How does the VCC isolation feature work? If either VCC input is at GND, both ports are in the high-impedance state.
- What is the latch-up performance of the device? The latch-up performance exceeds 100mA per JESD 78, Class II.
- What package type is the SN74AVC4T245RSVR-NT available in? The device is available in a 16-UQFN (RSV) package.
- Are the I/Os tolerant to higher voltages? Yes, the I/Os are 4.6V tolerant.
