Overview
The SN74LVC2T45DCUT is a 2-bit dual supply transceiver with configurable voltage-level shifting and 3-state outputs, manufactured by Texas Instruments. This device is designed for asynchronous communication between two data buses operating at different voltage levels, allowing for universal low-voltage bidirectional translation between 1.8V, 2.5V, 3.3V, and 5V voltage nodes. It features a fully configurable dual-rail design, where each port can operate over the full 1.65-V to 5.5-V power-supply range. The device is housed in an 8-pin VSSOP package and operates in a temperature range from -40°C to 85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range (VCCA and VCCB) | 1.65 to 5.5 | V |
| Maximum Data Rates | 420 Mbps (3.3V to 5V), 210 Mbps (to 3.3V), 140 Mbps (to 2.5V), 75 Mbps (to 1.8V) | Mbps |
| Output Drive at 3.3V | ±24 mA | mA |
| Propagation Delay | 17.7 ns | ns |
| Low Power Consumption | 4 µA maximum ICC | µA |
| ESD Protection | 4000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model | V |
| Package Type | VSSOP-8 | |
| Operating Temperature Range | -40 to 85°C | °C |
Key Features
- Fully configurable dual-rail design allowing each port to operate over the full 1.65-V to 5.5-V power-supply range.
- VCC isolation feature – if either VCC input is at GND, both ports are in the high-impedance state.
- DIR input circuit referenced to VCCA.
- Low power consumption, 4-µA maximum ICC.
- Available in the Texas Instruments NanoFree™ package.
- ±24-mA output drive at 3.3 V.
- Ioff supports Partial-Power-Down mode operation.
- 3-state outputs to facilitate bus connectivity.
- ESD protection exceeds JESD 22 standards).
Applications
The SN74LVC2T45DCUT is suitable for a broad spectrum of industrial applications, including:
- Asynchronous communication between two data buses operating at different voltage levels.
- Universal low-voltage bidirectional translation between various voltage nodes (1.8V, 2.5V, 3.3V, and 5V)).
- High-speed data communication environments due to its rapid propagation delay times).
- Systems requiring low power consumption and high noise immunity).
- Pb-free and RoHS compliant applications, adhering to global standards for restricting hazardous substances in electronic equipment).
Q & A
- What is the supply voltage range for the SN74LVC2T45DCUT?
The supply voltage range for both VCCA and VCCB is from 1.65V to 5.5V).
- What are the maximum data rates supported by the SN74LVC2T45DCUT?
The device supports maximum data rates of 420 Mbps (3.3V to 5V), 210 Mbps (to 3.3V), 140 Mbps (to 2.5V), and 75 Mbps (to 1.8V)).
- What is the output drive capability of the SN74LVC2T45DCUT at 3.3V?
The output drive capability at 3.3V is ±24 mA).
- What is the propagation delay of the SN74LVC2T45DCUT?
The propagation delay is approximately 17.7 ns).
- Does the SN74LVC2T45DCUT support partial-power-down mode operation?
Yes, the device supports partial-power-down mode operation using Ioff circuitry).
- What type of package is the SN74LVC2T45DCUT available in?
The device is available in an 8-pin VSSOP package).
- What is the operating temperature range for the SN74LVC2T45DCUT?
The operating temperature range is from -40°C to 85°C).
- Is the SN74LVC2T45DCUT Pb-free and RoHS compliant?
Yes, the device is both Pb-free and RoHS compliant).
- What is the purpose of the DIR input in the SN74LVC2T45DCUT?
The DIR input controls the direction of data transmission between the A and B ports, referenced to VCCA).
- What kind of ESD protection does the SN74LVC2T45DCUT offer?
The device offers ESD protection exceeding JESD 22 standards, including 4000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model).
