Overview
The SN74ALVTH162245DL is a 16-bit (dual-octal) noninverting 3-state transceiver designed by Texas Instruments. This device is optimized for 2.5-V or 3.3-V VCC operation and can also interface with 5-V system environments. It allows data transmission between the A bus and the B bus, controlled by the direction-control (DIR) input, and features an output-enable (OE) input to isolate the buses when necessary. The device is built using Advanced BiCMOS Technology (ABT) and supports mixed-mode signal operation, making it versatile for various applications.
Key Specifications
| Parameter | Unit | Min | Max | |
|---|---|---|---|---|
| Supply Voltage (VCC) | V | 2.3 | 2.7 | 2.7 |
| High-Level Input Voltage (VIH) | V | 1.7 | 1.7 | 1.7 |
| Low-Level Input Voltage (VIL) | V | 0.7 | 0.7 | 0.7 |
| High-Level Output Current (A Port) | mA | -8 | -12 | -12 |
| High-Level Output Current (B Port) | mA | -24 | -32 | -32 |
| Low-Level Output Current (A Port) | mA | 8 | 12 | 12 |
| Low-Level Output Current (B Port) | mA | 24 | 32 | 32 |
| Operating Free-Air Temperature | °C | -40 | - | 85 |
| Input Transition Rise or Fall Rate | ns/V | 10 | 10 | 10 |
Key Features
- State-of-the-Art Advanced BiCMOS Technology (ABT): Supports 2.5-V and 3.3-V operation with low static-power dissipation.
- Mixed-Mode Signal Operation: Compatible with 5-V input and output voltages while operating at 2.3-V to 3.6-V VCC.
- High Drive Capability: A port outputs can source or sink up to 12 mA, and B port outputs up to 32 mA at 3.3-V VCC.
- Bus Hold Circuitry: Prevents bus floating by holding unused or floating data inputs at a valid logic level.
- Flow-Through Architecture: Facilitates printed circuit board layout and minimizes high-speed switching noise with distributed VCC and GND pins.
- Power-Up 3-State and Ioff Support: Ensures outputs are in the high-impedance state during power up and power down, preventing driver conflict and backflow current.
- Latch-Up Performance: Exceeds 100 mA per JESD 78, Class II.
Applications
- High-Speed Data Transmission: Ideal for applications requiring fast data transfer between buses.
- Mixed-Voltage Systems: Suitable for systems that need to interface between 2.5-V, 3.3-V, and 5-V logic levels.
- Hot-Insertion Applications: Designed to support hot-insertion with Ioff and power-up 3-state features.
- General Digital Logic Circuits: Can be used in various digital logic circuits requiring 3-state outputs and high drive capability.
Q & A
- What is the operating voltage range for the SN74ALVTH162245DL?
The operating voltage range is 2.3 V to 3.6 V for VCC.
- Can the SN74ALVTH162245DL operate in mixed-voltage environments?
Yes, it supports mixed-mode signal operation with 5-V input and output voltages while operating at 2.3-V to 3.6-V VCC.
- What is the maximum output current for the A port and B port?
The A port can source or sink up to 12 mA, and the B port up to 32 mA at 3.3-V VCC.
- Does the SN74ALVTH162245DL have built-in bus hold circuitry?
Yes, it includes active bus-hold circuitry to hold unused or floating data inputs at a valid logic level.
- What is the purpose of the output-enable (OE) input?
The OE input can be used to disable the device, effectively isolating the buses.
- Is the SN74ALVTH162245DL suitable for hot-insertion applications?
Yes, it is designed to support hot-insertion with Ioff and power-up 3-state features.
- What is the operating temperature range for the SN74ALVTH162245DL?
The operating free-air temperature range is –40°C to 85°C.
- Does the SN74ALVTH162245DL have any specific requirements for unused control inputs?
Yes, all unused control inputs must be held at VCC or GND to ensure proper device operation.
- What is the latch-up performance of the SN74ALVTH162245DL?
The latch-up performance exceeds 100 mA per JESD 78, Class II.
- What are the package options available for the SN74ALVTH162245DL?
The device is available in SSOP (DL), TSSOP (DGG), TVSOP (DGV), and other packages.
