Overview
The SN74LVC2T45MDCTTEP, produced by Texas Instruments, is a dual-bit dual-supply bus transceiver designed for asynchronous communication between two data buses. This device supports configurable voltage translation and features 3-state outputs. It is part of the LVC (Low-Voltage CMOS) family, which is known for its low power consumption and high performance.
The SN74LVC2T45MDCTTEP is available in the SSOP (Shrink Small Outline Package) and is fully specified for partial-power-down applications, making it suitable for a wide range of applications including defense, aerospace, and medical fields. The device operates over a full 1.65-V to 5.5-V power-supply range and supports voltage translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage Range (VCCA, VCCB) | 1.65 | 5.5 | V |
| Input Voltage Range | -0.5 | 6.5 | V |
| Output Voltage Range in High-Impedance or Power-Off State | -0.5 | 6.5 | V |
| Continuous Output Current | -50 | 50 | mA |
| Continuous Current Through VCC or GND | -100 | 100 | mA |
| Operating Free-Air Temperature | -55 | 125 | °C (DCT package) |
| Operating Free-Air Temperature | -55 | 150 | °C (DCU package) |
| Package Thermal Impedance (qJA) | 220 | °C/W |
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.
- Supports voltage translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.
- 3-state outputs.
- Partial-power-down mode with Ioff circuitry to prevent backflow current.
- Available in SSOP package with NanoFree™ package technology.
- Controlled baseline, one assembly/test site, and one fabrication site.
- Temperature ranges: –55°C to 125°C (DCT package) and –55°C to 150°C (DCU package).
Applications
The SN74LVC2T45MDCTTEP is suitable for various applications requiring asynchronous communication and voltage translation between different voltage domains. These include:
- Defense and aerospace systems.
- Medical devices.
- Industrial automation and control systems.
- Embedded systems requiring voltage translation.
- High-reliability and high-temperature environments.
Q & A
- What is the primary function of the SN74LVC2T45MDCTTEP?
The primary function is to act as a dual-bit dual-supply bus transceiver for asynchronous communication between two data buses, supporting configurable voltage translation.
- What is the operating voltage range for the SN74LVC2T45MDCTTEP?
The device operates over a full 1.65-V to 5.5-V power-supply range.
- What is the VCC isolation feature?
If either VCC input is at GND, both ports are in the high-impedance state.
- What types of outputs does the SN74LVC2T45MDCTTEP have?
The device features 3-state outputs.
- What is the purpose of the Ioff circuitry?
The Ioff circuitry disables the outputs to prevent damaging current backflow through the device when it is powered down.
- In what package is the SN74LVC2T45MDCTTEP available?
The device is available in the SSOP (Shrink Small Outline Package).
- What are the temperature ranges for the SN74LVC2T45MDCTTEP?
The temperature ranges are –55°C to 125°C (DCT package) and –55°C to 150°C (DCU package).
- What are some typical applications for the SN74LVC2T45MDCTTEP?
Typical applications include defense, aerospace, medical devices, industrial automation, and high-reliability environments.
- What is the NanoFree™ package technology?
NanoFree™ package technology uses the die as the package, a major breakthrough in IC packaging concepts.
- How does the direction-control (DIR) input work?
The DIR input activates either the B-port outputs or the A-port outputs, controlling the direction of data transmission between the two buses.
