Overview
The SN74AVC1T45DBVRG4, produced by Texas Instruments, is a single-bit noninverting bus transceiver designed for universal low-voltage, bidirectional translation between various voltage nodes. This device operates with two separate configurable power-supply rails, VCCA and VCCB, which can accept supply voltages from 1.2V to 3.6V. This flexibility allows for translation between 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes, making it highly versatile for asynchronous communication between two data buses.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOT-23 (DBV), 6 pins |
| Supply Voltage Range (VCCA/VCCB) | 1.2V to 3.6V |
| Operating Temperature Range | -40°C to 125°C |
| Direction Control Input Power | VCCA |
| ESD Protection | Exceeds JESD 22: 2000V Human-Body Model, 200V Machine Model, 1000V Charged-Device Model |
| Thermal Resistance (RθJA) | 215.1°C/W (DBV package) |
| Partial Power-Down Capability | Yes, using Ioff circuitry |
| VCC Isolation Feature | If either VCC input is at GND, both ports are in high-impedance state |
Key Features
- Universal low-voltage, bidirectional translation between 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes.
- Two separate configurable power-supply rails (VCCA and VCCB) with a range of 1.2V to 3.6V.
- Direction-control (DIR) input powered by VCCA to activate either B-port or A-port outputs.
- Fully specified for partial-power-down applications using Ioff circuitry to prevent damaging current backflow.
- VCC isolation feature ensures both ports are in high-impedance state if either VCC input is at GND.
- NanoFree package technology using the die as the package.
- ESD protection exceeds JESD 22 standards.
Applications
- Asynchronous communication between two data buses in various voltage domains.
- Low-voltage translation in mixed-voltage systems.
- Partial-power-down applications to reduce power consumption.
- Systems requiring high ESD protection and thermal stability.
- Embedded systems, IoT devices, and other low-power electronic designs.
Q & A
- What is the primary function of the SN74AVC1T45DBVRG4?
The primary function is to act as a single-bit noninverting bus transceiver for universal low-voltage, bidirectional translation between different voltage nodes.
- What is the range of supply voltages for VCCA and VCCB?
The range is from 1.2V to 3.6V for both VCCA and VCCB.
- How does the direction-control (DIR) input work?
The DIR input, powered by VCCA, controls the direction of data transmission between the A and B ports.
- What is the purpose of the Ioff circuitry?
The Ioff circuitry disables the outputs to prevent damaging current backflow when the device is powered down.
- What happens if either VCC input is at GND?
If either VCC input is at GND, both ports are in the high-impedance state.
- What is the significance of NanoFree package technology?
NanoFree package technology uses the die as the package, representing a major breakthrough in IC packaging concepts.
- What are the ESD protection levels for this device?
The device exceeds JESD 22 standards with 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model protection.
- What is the thermal resistance (RθJA) for the DBV package?
The thermal resistance (RθJA) for the DBV package is 215.1°C/W.
- In what temperature range can the SN74AVC1T45DBVRG4 operate?
The operating temperature range is from -40°C to 125°C.
- What types of applications benefit from using the SN74AVC1T45DBVRG4?
Applications include asynchronous communication between data buses, low-voltage translation, partial-power-down systems, and systems requiring high ESD protection and thermal stability.
