Overview
The SN74LVC16T245DGGR is a 16-bit dual-supply bus transceiver produced by Texas Instruments. This device is designed for asynchronous communication between two data buses and features configurable level-shifting and voltage translation. It allows for bidirectional data transmission between different voltage nodes, making it ideal for mixed-voltage applications. The device operates over a wide power-supply range from 1.65 V to 5.5 V for both ports, enabling universal low-voltage translation between 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 16 |
| Power Supply Range (VCCA and VCCB) | 1.65 V to 5.5 V |
| Input/Output Voltage Levels | Compatible with 1.8-V, 2.5-V, 3.3-V, and 5-V logic |
| Control Input Levels | Referenced to VCCA |
| Output Enable (OE) Input | Must be tied to VCC through a pullup resistor during power up/down |
| ESD Protection | Exceeds JESD 22 |
| Latch-Up Performance | Exceeds 100 mA per JESD 78, Class II |
| Partial-Power-Down Mode | Supported by Ioff circuitry |
Key Features
- Configurable level-shifting and voltage translation between different voltage nodes
- Overvoltage-tolerant inputs and outputs
- Fully configurable dual-rail design
- VCC isolation feature to ensure high-impedance state during power up/down
- Supports partial-power-down mode operation using Ioff circuitry
- ESD protection exceeds JESD 22 and latch-up performance exceeds 100 mA per JESD 78, Class II
Applications
The SN74LVC16T245DGGR is ideal for various applications requiring level-shifting and voltage translation, such as interfacing devices with different voltage requirements, addressing mixed voltage incompatibility, and data transmission in systems where direction is different for each channel. It is particularly useful in mixed-voltage systems, embedded systems, and any scenario where bidirectional communication between different voltage domains is necessary.
Q & A
- What is the primary function of the SN74LVC16T245DGGR? The primary function is to act as a 16-bit dual-supply bus transceiver with configurable level-shifting and voltage translation.
- What is the power supply range for the SN74LVC16T245DGGR? The device operates over a power supply range from 1.65 V to 5.5 V for both VCCA and VCCB.
- What voltage levels are supported by the SN74LVC16T245DGGR? It supports 1.8-V, 2.5-V, 3.3-V, and 5-V logic levels.
- How should the Output Enable (OE) input be handled during power up/down? The OE input must be tied to VCC through a pullup resistor during power up/down to ensure the high-impedance state.
- Does the SN74LVC16T245DGGR support partial-power-down mode? Yes, it supports partial-power-down mode operation using Ioff circuitry.
- What is the ESD protection level of the SN74LVC16T245DGGR? The ESD protection exceeds JESD 22.
- What is the latch-up performance of the SN74LVC16T245DGGR? The latch-up performance exceeds 100 mA per JESD 78, Class II.
- In what scenarios is the SN74LVC16T245DGGR particularly useful? It is particularly useful in mixed-voltage systems, embedded systems, and any scenario where bidirectional communication between different voltage domains is necessary.
- How does the VCC isolation feature work? If either VCC input is at GND, the VCC isolation feature ensures that both ports are in the high-impedance state.
- What types of applications benefit from the SN74LVC16T245DGGR's level-shifting capabilities? Applications that require interfacing devices with different voltage requirements and addressing mixed voltage incompatibility benefit from its level-shifting capabilities.
