Overview
The SN74AVC4T245 is a 4-bit, dual-supply noninverting bidirectional voltage level translation device produced by Texas Instruments. This device is designed to facilitate communication between two data buses operating at different voltage levels. It supports a wide range of supply voltages from 1.2V to 3.6V for both the A and B ports, making it versatile for various low-voltage applications. The device is optimized for high-speed data translation and includes features such as partial-power-down mode and high-impedance state control.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range (VCCA and VCCB) | 1.2V to 3.6V | V |
| Maximum Data Rate (1.8V to 3.3V translation) | 380 Mbps | Mbps |
| Maximum Data Rate (< 1.8V to 3.3V translation) | 200 Mbps | Mbps |
| Maximum Data Rate (translate to 2.5V or 1.8V) | 200 Mbps | Mbps |
| Maximum Data Rate (translate to 1.5V) | 150 Mbps | Mbps |
| Maximum Data Rate (translate to 1.2V) | 100 Mbps | Mbps |
| Operating Temperature Range | -40°C to 85°C | °C |
| ESD Protection | 8000V Human-Body Model, 150V Machine Model, 1000V Charged-Device Model | V |
| Latch-Up Performance | Exceeds 100 mA per JESD 78, Class II | mA |
Key Features
- Fully configurable dual-rail design allowing each port to operate over the full 1.2V to 3.6V power-supply range.
- Supports high-speed translation with data rates up to 380 Mbps.
- Ioff supports partial-power-down mode operation to prevent backflow current.
- Control inputs VIH/VIL levels are referenced to VCCA voltage.
- I/Os are 4.6V tolerant.
- ESD protection exceeds JESD 22 standards.
- Latch-up performance exceeds 100 mA per JESD 78, Class II.
Applications
- Level-translation applications for interfacing devices or systems operating at different interface voltages.
- Personal electronics, such as smartphones and tablets.
- Industrial applications, including control systems and automation.
- Enterprise applications, such as servers and data storage systems.
- Telecom applications, including network equipment and communication devices.
Q & A
- What is the voltage range supported by the SN74AVC4T245?
The SN74AVC4T245 supports a supply voltage range from 1.2V to 3.6V for both the A and B ports.
- What is the maximum data rate supported by the SN74AVC4T245?
The maximum data rate is up to 380 Mbps when translating signals from 1.8V to 3.3V.
- How does the SN74AVC4T245 handle partial-power-down mode?
The device includes Ioff circuitry that disables the outputs to prevent damaging current backflow when the device is in partial-power-down mode.
- What is the operating temperature range of the SN74AVC4T245?
The operating temperature range is from -40°C to 85°C.
- Does the SN74AVC4T245 have ESD protection?
Yes, it exceeds JESD 22 standards with 8000V Human-Body Model, 150V Machine Model, and 1000V Charged-Device Model protection.
- What is the latch-up performance of the SN74AVC4T245?
The latch-up performance exceeds 100 mA per JESD 78, Class II.
- How do the control inputs work on the SN74AVC4T245?
The control inputs (DIR and OE) are referenced to VCCA voltage and control the direction of data transmission and the output state.
- Can the SN74AVC4T245 be used in high-speed applications?
Yes, it is designed to support high-speed data translation applications.
- What are the typical applications of the SN74AVC4T245?
It is used in level-translation applications, personal electronics, industrial systems, enterprise applications, and telecom devices.
- Is the SN74AVC4T245 still in production?
No, the SN74AVC4T245 has been discontinued by Texas Instruments.
