Overview
The SN74AVC1T45DCKR is a single-bit noninverting bus transceiver produced by Texas Instruments. This device is designed for asynchronous communication between two data buses and features two separate configurable power-supply rails. The SN74AVC1T45 is operational with VCCA/VCCB as low as 1.2V, allowing for universal low-voltage, bidirectional translation between various voltage nodes (1.2V, 1.5V, 1.8V, 2.5V, and 3.3V).
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Operating Temperature Range | -40 to 85 | °C | |
| Power Supply Range (VCCA/VCCB) | 1.2V to 3.6V | V | |
| Output Drive at 3.3V | ±12mA | mA | |
| I/O Tolerance | 4.6V | V | |
| Maximum Data Rates | 500Mbps (1.8V to 3.3V translation) | Mbps | |
| Maximum Data Rates | 320Mbps (<1.8V to 3.3V translation) | Mbps | |
| Maximum Data Rates | 240Mbps (translate to 1.2V) | Mbps | |
| ESD Protection | ±2000V Human Body Model | V | |
| Package Type | SOT-SC70 (DCK) | ||
| Pins | 6 |
Key Features
- Available in the Texas Instruments NanoFree™ package, using the die as the package.
- Fully configurable dual-rail design allows each port to operate over the full 1.2V to 3.6V power-supply range.
- VCC isolation feature – if either VCC input is at GND, then both ports are in the high-impedance state.
- DIR input circuit referenced to VCCA.
- ±12mA output drive at 3.3V.
- I/Os are 4.6V tolerant.
- Ioff supports partial-power-down mode operation.
- High-speed data translation with various maximum data rates depending on voltage levels.
- Latch-up performance exceeds 100mA per JESD 78, Class II.
- ESD protection exceeds JESD 22 standards.
Applications
- Personal electronic devices.
- Industrial applications.
- Enterprise systems.
- Telecom equipment.
Q & A
- What is the operating temperature range of the SN74AVC1T45DCKR?
The operating temperature range is -40°C to 85°C.
- What is the power supply range for VCCA and VCCB?
The power supply range for both VCCA and VCCB is from 1.2V to 3.6V.
- What is the output drive capability at 3.3V?
The output drive capability at 3.3V is ±12mA.
- What is the I/O tolerance of the device?
The I/Os are 4.6V tolerant.
- What are the maximum data rates for different voltage translations?
The maximum data rates vary depending on the voltage translation, such as 500Mbps for 1.8V to 3.3V translation, and 240Mbps for translation to 1.2V.
- What is the ESD protection level of the device?
The device has ESD protection exceeding ±2000V Human Body Model, 200V Machine Model, and ±1000V Charged-Device Model.
- What package types are available for the SN74AVC1T45?
The device is available in several package types, including SOT-SC70 (DCK), SOT-23 (DBV), SOT-5X3 (DRL), and DSBGA (YZP).
- How does the VCC isolation feature work?
If either VCC input is at GND, then both ports are in the high-impedance state.
- What is the purpose of the Ioff circuitry?
The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
- What are some common applications of the SN74AVC1T45?
The device is used in personal electronic devices, industrial applications, enterprise systems, and telecom equipment.
