Overview
The SN74LVC1T45DBVRG4, produced by Texas Instruments, is a single-bit, dual-supply bus transceiver designed for configurable voltage-level shifting and 3-state outputs. This device is part of the LVC (Low-Voltage CMOS) family and is suitable for applications requiring level translation between different voltage domains. The SN74LVC1T45 supports both unidirectional and bidirectional data transmission, controlled by the direction control pin (DIR), allowing data to be transmitted from the A port to the B port or vice versa.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | -40 | 85 | °C | |
| VCCA and VCCB Voltage Range | 1.65 | 5.5 | V | |
| Input Voltage Range (A and B Ports) | 1.65 | 5.5 | V | |
| Output High Voltage (VOH) at IOH = -100μA | 1.65V: 1.2V, 2.3V: 1.9V, 3V: 2.4V, 4.5V: 3.8V | V | ||
| Output Low Voltage (VOL) at IOL = 100μA | 1.65V: 0.1V, 2.3V: 0.3V, 3V: 0.55V, 4.5V: 0.55V | V | ||
| Junction-to-Ambient Thermal Resistance (RθJA) | 215.1 (DBV), 210.9 (DCK), 278.3 (DPK), 223.7 (DRL), 131.0 (YZP) | °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 both unidirectional and bidirectional data transmission controlled by the direction control pin (DIR).
- 3-state outputs to reduce power consumption and minimize bus contention.
- ESD protection exceeds JESD 22 standards: 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- Available in various packages including SOT-23, SC70, USON, and DSBGA.
Applications
- Logic level-shifting applications: The device is ideal for translating logic levels between different voltage domains, making it suitable for mixed-voltage systems.
- Mixed-voltage system design: It can be used in systems where different components operate at different voltage levels.
- Embedded systems and microcontrollers: Useful in scenarios where data needs to be transmitted between different voltage-level components.
- Industrial and automotive electronics: Where robust ESD protection and wide operating temperature ranges are necessary.
Q & A
- What is the operating temperature range of the SN74LVC1T45DBVRG4?
The operating temperature range is from -40°C to 85°C.
- What is the voltage range supported by VCCA and VCCB?
Both VCCA and VCCB can be supplied at any voltage between 1.65V and 5.5V.
- How is data transmission direction controlled in the SN74LVC1T45DBVRG4?
Data transmission direction is controlled by the direction control pin (DIR). A high on DIR allows data transmission from A to B, and a low on DIR allows data transmission from B to A.
- What are the ESD protection levels of the SN74LVC1T45DBVRG4?
The device has ESD protection exceeding JESD 22 standards: 2000V Human-Body Model, 200V Machine Model, and 1000V Charged-Device Model.
- In what packages is the SN74LVC1T45DBVRG4 available?
The device is available in various packages including SOT-23, SC70, USON, and DSBGA.
- What is the purpose of the 3-state outputs in the SN74LVC1T45DBVRG4?
The 3-state outputs help reduce power consumption and minimize bus contention.
- Can the SN74LVC1T45DBVRG4 be used in mixed-voltage systems?
- What are some common applications of the SN74LVC1T45DBVRG4?
Common applications include logic level-shifting, mixed-voltage system design, embedded systems, and industrial and automotive electronics.
- How does the SN74LVC1T45DBVRG4 handle input voltage ranges?
The A port can accept I/O voltages ranging from 1.65V to 5.5V, and the B port can also accept I/O voltages from 1.65V to 5.5V.
- What is the significance of the DIR pin in the SN74LVC1T45DBVRG4?
The DIR pin controls the direction of data transmission between the A and B ports.
