Overview
The SN74LVT244BDW is a 3.3-V ABT octal buffer and line driver produced by Texas Instruments. This device is designed for low-voltage operation, specifically within the 2.7-V to 3.6-V range, making it suitable for a variety of digital logic applications. The SN74LVT244B is organized as two 4-bit line drivers with separate output-enable (OE) inputs, allowing for flexible control over the output states. When the OE input is low, the device passes data from the A inputs to the Y outputs, and when the OE input is high, the outputs are in the high-impedance state. This feature is particularly useful in hot-insertion applications and prevents driver conflict during power-up and power-down phases.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range (VCC) | -0.5 | 4.6 | V | |
| Input Voltage Range (VI) | -0.5 | 7 | V | |
| Output Voltage Range (VO) in High-Impedance or Power-Off State | -0.5 | 7 | V | |
| Output High Voltage (VOH) at VCC = 2.7 V, IOH = -8 mA | 2.4 | V | ||
| Output Low Voltage (VOL) at VCC = 2.7 V, IOL = 100 μA | 0.2 | V | ||
| Propagation Delay Time (tPLH/tPHL) | 2.3 | ns | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Package Type | 20-SOIC | |||
| Pin Count | 20 | |||
| Output Type | 3-State |
Key Features
- Low-Voltage Operation: Designed for operation within the 2.7-V to 3.6-V range, making it suitable for low-voltage digital logic applications.
- 3-State Outputs: Outputs can be placed in a high-impedance state, which is useful for hot-insertion applications and prevents driver conflict during power-up and power-down phases.
- Output Enable (OE) Inputs: Separate OE inputs for each 4-bit line driver, allowing for independent control over the output states.
- Ioff and Power-Up 3-State Circuitry: Disables the outputs during power down and places them in the high-impedance state during power up, preventing damaging current backflow.
- RoHS and Lead-Free Compliance: Compliant with the Restriction of Hazardous Substances (RoHS) directive, ensuring the component is environmentally friendly and safe for use.
Applications
- Digital Logic Circuits: Suitable for use in various digital logic circuits requiring low-voltage operation and 3-state output capabilities.
- Hot-Insertion Applications: Ideal for applications where devices need to be inserted or removed while the system is powered on.
- Communication Systems: Can be used in communication systems that require reliable and controlled data transmission.
- Embedded Systems: Useful in embedded systems where low power consumption and reliable data transfer are critical.
Q & A
- What is the operating voltage range of the SN74LVT244BDW?
The operating voltage range is 2.7 V to 3.6 V.
- What type of outputs does the SN74LVT244BDW have?
The device has 3-state outputs.
- How many bits does each line driver handle?
Each line driver handles 4 bits.
- What is the purpose of the output enable (OE) inputs?
The OE inputs control whether the outputs are in the active state or high-impedance state.
- Is the SN74LVT244BDW RoHS compliant?
Yes, the component is RoHS compliant and lead-free.
- What is the propagation delay time of the SN74LVT244BDW?
The propagation delay time (tPLH/tPHL) is approximately 2.3 ns.
- What is the operating temperature range of the SN74LVT244BDW?
The operating temperature range is -40°C to 85°C.
- What type of package is the SN74LVT244BDW available in?
The device is available in a 20-SOIC package.
- How many pins does the SN74LVT244BDW have?
The device has 20 pins.
- Is the SN74LVT244BDW suitable for hot-insertion applications?
Yes, it is designed for hot-insertion applications with Ioff and power-up 3-state circuitry.
