Overview
The SN74LVC1T45DRLR, produced by Texas Instruments, is a single-bit, dual-supply, noninverting bus transceiver. This device is designed to facilitate bidirectional voltage-level translation between two data buses operating at different voltage levels. It supports a wide range of supply voltages from 1.65V to 5.5V for both VCCA and VCCB, making it versatile for various low-voltage applications. The transceiver is controlled by a direction-control (DIR) input, which determines the direction of data transmission between the A and B ports.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Min | 1.65 | V |
| Supply Voltage Max | 5.5 | V |
| Operating Temperature Range | -40 to 85 | °C |
| No. of Pins | 6 | |
| Package Type | SOT-6 (DRL) | |
| ESD Protection | 2000V Human-Body Model, 200V Machine Model, 1000V Charged-Device Model | |
| Output Drive | ±24mA at 3.3V | |
| Maximum Data Rates | 420Mbps (3.3V to 5V), 210Mbps (to 3.3V), 140Mbps (to 2.5V), 75Mbps (to 1.8V) | |
| Low Power Consumption | 4µA maximum ICC |
Key Features
- Fully configurable dual-rail design allowing each port to operate over the full 1.65V to 5.5V power-supply range
- ESD protection exceeds JESD 22 standards: 2000V Human-Body Model, 200V Machine Model, 1000V Charged-Device Model
- 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 with a maximum ICC of 4µA
- ±24mA output drive at 3.3V
- Ioff supports partial-power-down mode operation
- NanoFree™ package technology using the die as the package
Applications
The SN74LVC1T45DRLR is suitable for a variety of applications requiring bidirectional voltage-level translation, such as:
- Asynchronous communication between two data buses operating at different voltage levels
- Low-voltage bidirectional translation between 1.8V, 2.5V, 3.3V, and 5V voltage nodes
- Partial-power-down applications where Ioff circuitry is necessary to prevent damaging current backflow
- Systems requiring high ESD protection and low power consumption
Q & A
- What is the primary function of the SN74LVC1T45DRLR?
The primary function is to facilitate bidirectional voltage-level translation between two data buses operating at different voltage levels. - What is the range of supply voltages supported by the SN74LVC1T45DRLR?
The device supports supply voltages ranging from 1.65V to 5.5V for both VCCA and VCCB. - How is the direction of data transmission controlled in the SN74LVC1T45DRLR?
The direction of data transmission is controlled by the DIR (direction-control) input, which determines whether data is transmitted from the A port to the B port or vice versa. - What are the key ESD protection features of the SN74LVC1T45DRLR?
The device offers ESD protection exceeding JESD 22 standards: 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model. - What is the VCC isolation feature in the SN74LVC1T45DRLR?
If either VCC input is at GND, both ports are in the high-impedance state. - What is the maximum output drive of the SN74LVC1T45DRLR at 3.3V?
The maximum output drive is ±24mA at 3.3V. - What are the maximum data rates supported by the SN74LVC1T45DRLR?
The device supports maximum data rates of 420Mbps (3.3V to 5V), 210Mbps (to 3.3V), 140Mbps (to 2.5V), and 75Mbps (to 1.8V). - Is the SN74LVC1T45DRLR suitable for partial-power-down applications?
Yes, the device is fully specified for partial-power-down applications using Ioff circuitry. - What is the NanoFree™ package technology used in the SN74LVC1T45DRLR?
The NanoFree™ package technology uses the die as the package, which is a major breakthrough in IC packaging concepts. - Is the SN74LVC1T45DRLR RoHS compliant?
Yes, the device is RoHS compliant.
