Overview
The SN74AVCH1T45DBVT is a single-bit dual-supply bus transceiver manufactured by Texas Instruments. It is designed for voltage-level translation between two data buses with configurable voltage translation and 3-state outputs. This component is optimized for operation within a VCCA/VCCB range of 1.2V to 3.6V, making it suitable for low-voltage bidirectional translation across various voltage nodes such as 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The SN74AVCH1T45DBVT is ideal for applications requiring asynchronous communication between data buses, with a direction control (DIR) input determining the data flow direction. Its compact SOT-23-6 package and advanced features like Ioff circuit for partial power-down applications make it a competitive choice in the voltage-level translation market.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage (VCCA/VCCB) | 1.2 to 3.6 | V | Optimized for 1.4V to 3.6V |
| Data Rate | 500 | Mbps | |
| Operating Temperature | -40 to 85 | °C | |
| Package | SOT-23-6 | ||
| Output Type | 3-State, Non-Inverting | ||
| Channels | 1 | Bidirectional | |
| Ioff Circuit | Yes | Partial Power-Down Support |
Key Features
- Configurable voltage translation between 1.2V and 3.6V.
- Bidirectional data flow controlled by DIR input.
- 3-state outputs for bus isolation.
- Ioff circuit prevents current backflow during power-down.
- Compact SOT-23-6 package for space-constrained applications.
Applications
The SN74AVCH1T45DBVT is widely used in applications requiring voltage-level translation, such as industrial automation, consumer electronics, and automotive systems. Its ability to translate between low-voltage nodes makes it suitable for interfacing microcontrollers, sensors, and other peripherals operating at different voltage levels. Additionally, its robust design and partial power-down support make it ideal for battery-powered devices and energy-efficient systems.
Q & A
1. What is the operating voltage range of SN74AVCH1T45DBVT?
The operating voltage range is 1.2V to 3.6V for both VCCA and VCCB.
2. How does the DIR pin control data flow?
The DIR pin determines the direction of data flow. When high, data flows from A to B; when low, data flows from B to A.
3. What is the maximum data rate supported?
The maximum data rate is 500 Mbps.
4. Does this device support partial power-down?
Yes, it includes an Ioff circuit for partial power-down applications.
5. What is the package type of SN74AVCH1T45DBVT?
It comes in an SOT-23-6 package.
6. Can it translate between 1.8V and 3.3V?
Yes, it supports translation between 1.8V and 3.3V, among other voltage nodes.
7. Is this device suitable for automotive applications?
Yes, its robust design makes it suitable for automotive systems.
8. What is the operating temperature range?
The operating temperature range is -40°C to 85°C.
9. Does it have 3-state outputs?
Yes, it features 3-state outputs for bus isolation.
10. Can it be used in battery-powered devices?
Yes, its low-voltage operation and partial power-down support make it ideal for battery-powered devices.
