Overview
The SN74AVC20T245DGG is a 20-bit dual-supply bus transceiver produced by Texas Instruments. This device is part of the 74AVC family, known for its low-voltage operation and high-speed data transfer capabilities. It is designed for asynchronous communication between data buses and supports bidirectional translation between various voltage levels, including 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The transceiver operates with two separate configurable power-supply rails, allowing each port to function over a wide voltage range from 1.2V to 3.6V.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TSSOP (DGG) with 56 pins |
| Operating Temperature Range | -40°C to 85°C |
| Voltage - VCCA | 1.2V to 3.6V |
| Voltage - VCCB | 1.2V to 3.6V |
| Data Rate | Up to 380 Mbps (1.8V to 3.3V translation) |
| Output Type | Tri-State, Non-Inverted |
| ESD Protection | 8000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model |
| Latch-Up Performance | Exceeds 100 mA per JESD 78, Class II |
Key Features
- Control Inputs VIH/VIL levels are referenced to VCCA voltage.
- VCC isolation feature: If either VCC input is at GND, both ports are in the high-impedance state.
- Overvoltage-tolerant inputs/outputs allow mixed-voltage-mode data communications.
- Fully configurable dual-rail design allows each port to operate over the full 1.2-V to 3.6-V power-supply range.
- Ioff supports partial-power-down mode operation.
- I/Os are 4.6-V tolerant.
- High-speed data transfer rates up to 380 Mbps.
- ESD protection exceeds JESD 22 standards.
Applications
The SN74AVC20T245DGG is versatile and suitable for a wide range of applications, including:
- Asynchronous communication between data buses.
- Voltage translation in mixed-voltage systems.
- Partial-power-down applications.
- High-speed data transfer in various electronic systems.
- Systems requiring low-voltage operation and high-speed data transfer.
Q & A
- What is the SN74AVC20T245DGG used for?
The SN74AVC20T245DGG is used for bidirectional voltage translation and asynchronous communication between data buses in mixed-voltage systems.
- What is the operating voltage range for the SN74AVC20T245DGG?
The device operates with VCCA and VCCB voltages ranging from 1.2V to 3.6V.
- What is the maximum data rate supported by the SN74AVC20T245DGG?
The maximum data rate supported is up to 380 Mbps for 1.8V to 3.3V translation.
- Does the SN74AVC20T245DGG support partial-power-down mode?
- What kind of ESD protection does the SN74AVC20T245DGG have?
The device has ESD protection exceeding JESD 22 standards, including 8000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
- What is the package type and pin count of the SN74AVC20T245DGG?
The device comes in a TSSOP (DGG) package with 56 pins.
- What is the operating temperature range for the SN74AVC20T245DGG?
The operating temperature range is -40°C to 85°C.
- Are the I/Os of the SN74AVC20T245DGG voltage tolerant?
- How does the VCC isolation feature work?
If either VCC input is at GND, both ports are in the high-impedance state.
- Can the SN74AVC20T245DGG be used in mixed-voltage systems?
