Overview
The SN74ALVTH16245VR is a 16-bit (dual-octal) noninverting 3-state transceiver produced by Texas Instruments. This device is designed for operation at 2.5-V or 3.3-V VCC, with the capability to interface with a 5-V system environment. It can be used as two 8-bit transceivers or one 16-bit transceiver, allowing data transmission between the A and B buses based on the direction-control (DIR) input. The output-enable (OE) input allows the device to be disabled, effectively isolating the buses.
The device features active bus-hold circuitry to maintain valid logic levels on unused or floating data inputs and includes Ioff and power-up 3-state circuitry to prevent damaging current backflow and driver conflict during power-up and power-down.
Key Specifications
| Parameter | Unit | Min | Max | |
|---|---|---|---|---|
| Supply Voltage (VCC) | V | 2.3 (2.5V), 3 (3.3V) | 2.5 (2.5V), 3.3 (3.3V) | 2.7 (2.5V), 3.6 (3.3V) |
| High-Level Input Voltage (VIH) | V | 1.7 (2.5V), 2 (3.3V) | - | - |
| Low-Level Input Voltage (VIL) | V | 0.7 (2.5V), 0.8 (3.3V) | - | - |
| Input Voltage Range (VI) | V | 0 | - | 5.5 |
| High-Level Output Current (IOH) | mA | -6 (2.5V), -24 (3.3V) | - | -8 (2.5V), -32 (3.3V) |
| Low-Level Output Current (IOL) | mA | 6 (2.5V), 18 (3.3V) | - | 8 (2.5V), 24 (3.3V) |
| Operating Free-Air Temperature (TA) | °C | -40 | - | 85 |
| Propagation Delay Time (tPLH, tPHL) | ns | 0.5 | - | 3.6 (2.5V), 3.1 (3.3V) |
Key Features
- 16-bit (dual-octal) noninverting 3-state transceivers
- Operates at 2.5-V or 3.3-V VCC with compatibility for 5-V system environments
- Data transmission from A to B or B to A based on DIR input
- Output-enable (OE) input for bus isolation
- Ioff and power-up 3-state circuitry for hot-insertion applications and preventing driver conflict
- Active bus-hold circuitry to maintain valid logic levels on unused or floating data inputs
- Available in various packages including SSOP, TSSOP, TVSOP, VFBGA, and CFP
Applications
- High-speed data transmission in digital systems
- Interface between different voltage level systems (e.g., 2.5V to 3.3V or 5V)
- Hot-insertion applications where devices are powered on or off while connected to the system
- Systems requiring low power consumption and high-speed data transfer
- Embedded systems, industrial control systems, and telecommunications equipment
Q & A
- What is the primary function of the SN74ALVTH16245VR?
The primary function is to act as a 16-bit noninverting 3-state transceiver, allowing data transmission between two buses (A and B) based on the direction-control input.
- What are the operating voltage ranges for the SN74ALVTH16245VR?
The device operates at 2.5-V ± 0.2 V and 3.3-V ± 0.3 V.
- What is the purpose of the output-enable (OE) input?
The OE input allows the device to be disabled, effectively isolating the buses.
- What is the significance of Ioff and power-up 3-state circuitry?
These circuitries prevent damaging current backflow and driver conflict during power-up and power-down, making the device suitable for hot-insertion applications.
- What is active bus-hold circuitry and its purpose?
Active bus-hold circuitry maintains valid logic levels on unused or floating data inputs.
- In what packages is the SN74ALVTH16245VR available?
The device is available in SSOP, TSSOP, TVSOP, VFBGA, and CFP packages.
- What are the typical propagation delay times for this device?
The propagation delay times (tPLH, tPHL) range from 0.5 ns to 3.6 ns for 2.5V and 3.1 ns for 3.3V.
- What are the recommended operating temperature ranges for this device?
The operating free-air temperature range is from -40°C to 85°C.
- Can this device be used in systems with different voltage levels?
Yes, it is compatible with systems operating at different voltage levels, such as 2.5V, 3.3V, and 5V.
- What are some common applications for the SN74ALVTH16245VR?
Common applications include high-speed data transmission in digital systems, interface between different voltage level systems, hot-insertion applications, and systems requiring low power consumption and high-speed data transfer.
