Overview
The SN74LVC1T45DRLRG4, produced by Texas Instruments, is a single-bit, dual-supply, noninverting voltage level transceiver. This device is designed to facilitate asynchronous communication between two data buses operating at different voltage levels. The SN74LVC1T45 supports a wide range of I/O voltages from 1.65V to 5.5V on both its A and B ports, making it versatile for various voltage translation applications. The direction control pin (DIR) determines the direction of data transmission between the A and B ports.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Pins | 6 | - |
| Package Type | SOT (DRL) | - |
| Package Size | 1.6 mm × 1.2 mm | mm |
| Operating Temperature Range | -40°C to 85°C | °C |
| Voltage Range (VCCA and VCCB) | 1.65V to 5.5V | V |
| Data Rate | Up to 420 Mbps | Mbps |
| ESD Protection | 2000V Human-Body Model, 200V Machine Model, 1000V Charged-Device Model | V |
| Junction-to-Ambient Thermal Resistance (RθJA) | 223.7 °C/W | °C/W |
Key Features
- Fully configurable dual-rail design allowing each port to operate over the full 1.65V to 5.5V power-supply range.
- Supports asynchronous communication between two data buses.
- Direction control pin (DIR) determines the direction of data transmission.
- 3-state outputs.
- ESD protection exceeds JESD 22 standards (2000V Human-Body Model, 200V Machine Model, 1000V Charged-Device Model).
- Ioff circuitry disables the outputs to prevent damaging current backflow when the device is powered down.
- VCC isolation feature ensures both ports are in the high-impedance state if either VCC input is at GND.
- NanoFree™ package technology.
Applications
The SN74LVC1T45 is suitable for various applications requiring voltage level translation, such as:
- Interfacing devices or systems operating at different interface voltages.
- Unidirectional logic level-shifting applications.
- Asynchronous communication between two data buses.
- Systems requiring high-speed data transmission up to 420 Mbps.
Q & A
- What is the primary function of the SN74LVC1T45?
The primary function of the SN74LVC1T45 is to act as a single-bit, dual-supply, noninverting voltage level transceiver, facilitating asynchronous communication between two data buses operating at different voltage levels.
- What is the voltage range supported by the SN74LVC1T45?
The SN74LVC1T45 supports I/O voltages ranging from 1.65V to 5.5V on both its A and B ports.
- How does the direction control pin (DIR) work?
The DIR pin determines the direction of data transmission between the A and B ports. A high on the DIR allows data transmission from A to B, and a low on the DIR allows data transmission from B to A.
- What is the maximum data rate supported by the SN74LVC1T45?
The SN74LVC1T45 can support data rates up to 420 Mbps.
- What types of ESD protection does the SN74LVC1T45 offer?
The SN74LVC1T45 offers ESD protection exceeding JESD 22 standards, including 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- What is the purpose of the Ioff circuitry in the SN74LVC1T45?
The Ioff circuitry disables the outputs to prevent damaging current backflow when the device is powered down.
- What is the VCC isolation feature in the SN74LVC1T45?
The VCC isolation feature ensures that both ports are in the high-impedance state if either VCC input is at GND.
- What package types are available for the SN74LVC1T45?
The SN74LVC1T45 is available in various package types, including SOT, SOT-23, SC70, USON, and DSBGA.
- What is the operating temperature range of the SN74LVC1T45?
The operating temperature range of the SN74LVC1T45 is from -40°C to 85°C.
- What is the significance of NanoFree™ package technology in the SN74LVC1T45?
NanoFree™ package technology is a breakthrough in IC packaging, using the die as the package, which enhances the device's compactness and performance.
