Overview
The SN74AVC2T245RSWR, produced by Texas Instruments, is a dual-bit, dual-supply noninverting bidirectional voltage level translation device. This component is designed to facilitate asynchronous communication between two data buses with different voltage levels. It supports voltage translation between various low-voltage nodes such as 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V, making it versatile for a wide range of applications.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| VCCA Voltage Range | Supply voltage for A port | 1.2V to 3.6V |
| VCCB Voltage Range | Supply voltage for B port | 1.2V to 3.6V |
| Direction Control | Independent direction control for each channel | DIR pins controlled by VCCA |
| Output Enable | Output enable (OE) pin to control output states | High-impedance mode when OE is high |
| Propagation Delay (tPLH/tPHL) | Typical propagation delay from A to B and B to A | 1.8 ns to 3.6 ns depending on VCCB |
| Power Consumption | Low power consumption with partial-power-down capability | Ioff feature for reduced power in standby mode |
Key Features
- Each channel has independent direction control, allowing for flexible data transmission between A and B ports.
- Supports universal low-voltage bidirectional translation between various voltage nodes (1.2V, 1.5V, 1.8V, 2.5V, and 3.3V).
- The control inputs (DIR and OE) are referenced to VCCA, ensuring consistent logic levels.
- 3-State output capability with high-impedance mode when OE is high.
- Designed for asynchronous communication and partial-power-down applications.
Applications
The SN74AVC2T245RSWR is suitable for a variety of applications where voltage level translation is necessary, such as in mixed-voltage systems, interface circuits between different voltage domains, and in systems requiring asynchronous communication between different voltage levels. 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 SN74AVC2T245RSWR?
The primary function is to perform bidirectional voltage level translation between two data buses with different voltage levels. - What voltage ranges does the SN74AVC2T245RSWR support?
It supports voltage ranges from 1.2V to 3.6V for both VCCA and VCCB. - How does the direction control work?
The direction control is independent for each channel and is controlled by the DIR pins, which are referenced to VCCA. - What is the purpose of the OE pin?
The OE (output enable) pin controls the output states, placing the outputs in high-impedance mode when high. - Is the SN74AVC2T245RSWR suitable for partial-power-down applications?
Yes, it is designed for partial-power-down applications with the Ioff feature. - What are some common applications for this device?
It is used in mixed-voltage systems, interface circuits, embedded systems, industrial control systems, and consumer electronics. - How does the device handle asynchronous communication?
The device is designed for asynchronous communication between two data buses, allowing data transmission in either direction based on the DIR pin settings. - What are the typical propagation delays for this device?
The typical propagation delays range from 1.8 ns to 3.6 ns depending on the VCCB voltage level. - Can the SN74AVC2T245RSWR operate with different logic levels on the A and B ports?
Yes, it can operate with different logic levels on the A and B ports, as it supports universal low-voltage bidirectional translation. - Where can I find more detailed specifications and technical support for the SN74AVC2T245RSWR?
You can find detailed specifications and technical support on the Texas Instruments website and through their E2E forums.
