Overview
The SN74ALVTH162244 is a 16-bit buffer/line driver designed by Texas Instruments for low-voltage operation at 2.5 V or 3.3 V VCC. This device is capable of providing a TTL interface to a 5-V system environment, making it versatile for various applications. It can be configured as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. The SN74ALVTH162244 features true outputs and symmetrical active-low output-enable (OE) inputs, along with active bus-hold circuitry to maintain valid logic levels on unused or floating data inputs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage (2.5 V) | 2.3 | 2.5 | 2.7 | V |
| VCC Supply Voltage (3.3 V) | 3.0 | 3.3 | 3.6 | V |
| VIH High-Level Input Voltage (2.5 V) | 1.7 | V | ||
| VIH High-Level Input Voltage (3.3 V) | 2.0 | V | ||
| VIL Low-Level Input Voltage (2.5 V and 3.3 V) | 0.7 | V | ||
| IOH High-Level Output Current (2.5 V) | -6 | -8 | mA | |
| IOH High-Level Output Current (3.3 V) | -8 | -12 | mA | |
| IOL Low-Level Output Current (2.5 V and 3.3 V) | 8 | 12 | mA | |
| TA Operating Free-Air Temperature | -40 | 85 | °C | |
| tPLH Propagation Delay Time (2.5 V, CL = 30 pF) | 1 | 4.3 | ns | |
| tPLH Propagation Delay Time (3.3 V, CL = 50 pF) | 1 | 3.4 | ns |
Key Features
- Low-voltage operation at 2.5 V or 3.3 V VCC with TTL compatibility.
- 16-bit buffer/line driver that can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer.
- Symmetrical active-low output-enable (OE) inputs.
- Active bus-hold circuitry to maintain valid logic levels on unused or floating data inputs.
- High-impedance state during power up or power down.
- Outputs designed to sink up to 12 mA with equivalent 30-Ω resistors to reduce overshoot and undershoot.
- Flow-through architecture for easy PCB layout.
- Distributed VCC and GND pin configuration to minimize high-speed switching noise.
- ESD protection exceeds 2000 V per MIL-STD-883, Method 3015.
- Package options include DL, DGG, DGV, and WD packages.
Applications
- Low-voltage digital systems requiring TTL compatibility.
- High-speed data transmission and buffering applications.
- Systems needing active bus-hold and high-impedance state control.
- Industrial and commercial electronic devices requiring robust ESD protection.
- Embedded systems and microcontroller interfaces.
Q & A
- What are the operating voltage ranges for the SN74ALVTH162244?
The device operates at 2.5 V ± 0.2 V and 3.3 V ± 0.3 V.
- What is the maximum output current for the SN74ALVTH162244?
The device can sink up to 12 mA and source up to 12 mA.
- What is the propagation delay time for the SN74ALVTH162244 at 2.5 V and 3.3 V?
At 2.5 V with CL = 30 pF, the propagation delay time is 1 to 4.3 ns. At 3.3 V with CL = 50 pF, it is 1 to 3.4 ns.
- Does the SN74ALVTH162244 have ESD protection?
- What are the package options available for the SN74ALVTH162244?
The device is available in DL, DGG, DGV, and WD packages.
- How does the active bus-hold circuitry work in the SN74ALVTH162244?
The active bus-hold circuitry maintains valid logic levels on unused or floating data inputs.
- What is the operating temperature range for the SN74ALVTH162244?
The device operates from –40°C to 85°C.
- Can the SN74ALVTH162244 be used in high-speed applications?
- How many bits can the SN74ALVTH162244 buffer?
The device can buffer 16 bits, configurable as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer.
- What is the purpose of the symmetrical active-low output-enable (OE) inputs?
The symmetrical active-low output-enable inputs allow for easy control of the output states.
