Overview
The SN74LVTH245AMDBREP is a 3.3-V ABT (Advanced BiCMOS Technology) octal bus transceiver with 3-state outputs, manufactured by Texas Instruments. This device is designed to support mixed-mode signal operation and is fully specified for hot-insertion applications. It features active bus-hold circuitry to maintain valid logic levels on unused or floating data inputs and includes output-enable (OE) and direction-control (DIR) inputs for flexible data transmission between two buses.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage Range) | -0.5 | 4.6 | V | |
| VI (Input Voltage Range) | -0.5 | 7 | V | |
| VO (Output Voltage Range in High State) | -0.5 | VCC + 0.5 | V | |
| IO (Current into Output in Low State) | 128 | mA | ||
| IO (Current into Output in High State) | 64 | mA | ||
| TA (Operating Free-Air Temperature) | -55 | 125 | °C | |
| tPLH (Propagation Delay Time, A to B) | 1.2 | 2.3 | 5.5 | ns |
| tPHL (Propagation Delay Time, B to A) | 1.2 | 2.1 | 5.5 | ns |
Key Features
- Controlled Baseline and ESD Protection exceeding JESD 22 standards (2000-V Human-Body Model and 200-V Machine Model).
- Active bus-hold circuitry to hold unused or floating data inputs at a valid logic level.
- Output-enable (OE) input to disable the device and isolate the buses.
- Direction-control (DIR) input to control data transmission direction between A and B buses.
- Supports mixed-mode signal operation (5-V tolerant inputs).
- Enhanced diminishing manufacturing sources (DMS) support and enhanced product-change notification.
- Qualification pedigree available.
- Hot-insertion capable with Ioff and power-up 3-state circuitry to prevent damaging current backflow and driver conflict.
Applications
The SN74LVTH245AMDBREP is suitable for a variety of applications requiring high-speed data transmission and bus management, such as:
- Embedded systems and microcontrollers
- Communication interfaces and networking equipment
- Industrial control systems
- Automotive electronics
- Consumer electronics requiring robust and reliable data transmission
Q & A
- What is the primary function of the SN74LVTH245AMDBREP? The primary function is to act as an octal bus transceiver, enabling data transmission between two buses (A and B) with 3-state outputs.
- What are the operating temperature ranges for this device? The operating temperature ranges are from -55°C to 125°C for the SSOP package and from -40°C to 85°C for the TSSOP package.
- How does the output-enable (OE) input function? The OE input can be used to disable the device, effectively isolating the buses and placing the outputs in a high-impedance state.
- What is the purpose of the direction-control (DIR) input? The DIR input controls the direction of data transmission between the A and B buses.
- Does the device support hot-insertion applications? Yes, it is fully specified for hot-insertion applications using Ioff and power-up 3-state circuitry.
- What type of ESD protection does the device offer? The device offers ESD protection exceeding JESD 22 standards, including 2000-V Human-Body Model and 200-V Machine Model.
- How does the active bus-hold circuitry function? The active bus-hold circuitry holds unused or floating data inputs at a valid logic level, preventing them from floating.
- What are the typical propagation delay times for this device? The typical propagation delay times are around 2.1 to 2.3 ns for both A to B and B to A transitions.
- Is the device RoHS compliant? Yes, the device is RoHS compliant and suitable for lead-free processes.
- What are the package options available for this device? The device is available in SSOP (DB) and TSSOP (PW) packages).
