Overview
The SN74AVC4T245DGVR is a 4-bit dual-supply bus transceiver produced by Texas Instruments. This component is designed for asynchronous communication between two data buses and supports universal low-voltage bidirectional translation between various voltage nodes (1.2V, 1.5V, 1.8V, 2.5V, and 3.3V). The device features two separate configurable power-supply rails, allowing each port to operate over the full 1.2V to 3.6V power-supply range. It is optimized for use in applications requiring voltage-level translation and is fully specified for partial-power-down applications using Ioff circuitry.
Key Specifications
| Specification | Value |
|---|---|
| Brand | Texas Instruments |
| Logic Family | AVC |
| Logic Function | Bus Transceiver |
| Number of Elements per Chip | 2 |
| Number of Channels per Chip | 4 |
| Polarity | Non-Inverting |
| Mounting Type | Surface Mount |
| Package Type | TVSOP, TSSOP, VQFN, UQFN |
| Pin Count | 16 |
| Input Level | CMOS |
| Output Level | 3-State |
| Maximum High Level Output Current | -12mA |
| Maximum Low Level Output Current | 12mA |
| Maximum Propagation Delay Time @ Maximum CL | 10.3ns |
| Minimum Operating Supply Voltage | 1.2 V |
| Maximum Operating Supply Voltage | 3.6 V |
| Minimum Operating Temperature | -40 °C |
| Maximum Operating Temperature | +85 °C |
Key Features
- Fully configurable dual-rail design allowing each port to operate over the full 1.2V to 3.6V power-supply range.
- I/Os are 4.6V tolerant.
- Supports partial power-down-mode operation using Ioff circuitry.
- High data rates: up to 380Mbps for 1.8V to 3.3V translation, and varying rates for other voltage translations.
- Latch-up performance exceeds 100mA per JESD 78, Class II.
- ESD protection exceeds JESD 22: 8000V Human-Body Model, 150V Machine Model, and 1000V Charged-Device Model).
- VCC isolation feature ensures high-impedance state during power up or power down).
Applications
The SN74AVC4T245DGVR is suitable for various applications requiring voltage-level translation and asynchronous communication between two data buses. These include:
- Telecom systems).
- Industrial automation systems.
- Embedded systems requiring low-voltage bidirectional translation.
- Consumer electronics with multiple voltage domains.
- Automotive systems needing robust voltage-level translation.
Q & A
- What is the primary function of the SN74AVC4T245DGVR?
The primary function is to act as a 4-bit dual-supply bus transceiver for asynchronous communication between two data buses with configurable voltage-level shifting.
- What are the supported voltage ranges for the A and B ports?
Both ports can operate over the full 1.2V to 3.6V power-supply range.
- What is the maximum propagation delay time for this device?
The maximum propagation delay time at maximum CL is 10.3ns.
- Does the device support partial power-down mode?
- What are the ESD protection levels for this device?
The device has ESD protection exceeding JESD 22: 8000V Human-Body Model, 150V Machine Model, and 1000V Charged-Device Model.
- What are the typical applications for this device?
Typical applications include telecom systems, industrial automation, embedded systems, consumer electronics, and automotive systems.
- What is the package type for the SN74AVC4T245DGVR?
The device is available in TVSOP, TSSOP, VQFN, and UQFN packages.
- How many channels does the device support?
The device supports 4 channels.
- What is the maximum high-level output current for this device?
The maximum high-level output current is -12mA.
- What is the operating temperature range for the SN74AVC4T245DGVR?
The operating temperature range is from -40 °C to +85 °C.
