Overview
The 74LVC244APW is an octal buffer/line driver with 3-state outputs, manufactured by Nexperia (previously part of NXP USA Inc.). This device is part of the 74LVC244A and 74LVCH244A series, which are 8-bit buffer/line drivers. They can be used as two 4-bit buffers or one 8-bit buffer, making them versatile for various applications. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs, allowing for flexible control over the output states.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | fmax (MHz) | Nr of bits | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|---|
| 74LVC244APW | 1.2 - 3.6 | CMOS/LVTTL | ± 24 | 175 | 8 | low | -40~125 | TSSOP20 |
Key Features
- Wide supply voltage range: From 1.2 V to 3.6 V, making it suitable for a variety of power supply conditions.
- CMOS low-power consumption: Reduces power consumption, which is beneficial for energy-efficient designs.
- Direct interface with TTL levels: Allows for seamless integration with TTL logic circuits.
- Overvoltage tolerant inputs: Inputs can tolerate voltages up to 5.5 V, enhancing robustness in mixed voltage environments.
- IOFF circuitry: Provides partial power-down mode operation, preventing backflow current when the device is powered down.
- Schmitt-trigger action at all inputs: Enhances tolerance to slower input rise and fall times.
- Bus hold on all data inputs (74LVCH244A only): Maintains the last state of the input signal, preventing floating inputs.
- ESD protection: Exceeds 2000 V for HBM and 1000 V for CDM, ensuring robustness against electrostatic discharge.
Applications
The 74LVC244APW is suitable for a wide range of applications, including:
- Mixed voltage environments: Acts as a translator between 3.3 V and 5 V logic levels.
- Power management systems: Utilizes IOFF circuitry for partial power-down mode operation.
- High-speed data transmission: Supports high-frequency operations up to 175 MHz.
- Industrial and automotive systems: Operates over a wide temperature range from -40°C to 125°C.
Q & A
- What is the primary function of the 74LVC244APW?
The primary function of the 74LVC244APW is to act as an octal buffer/line driver with 3-state outputs.
- What is the supply voltage range for the 74LVC244APW?
The supply voltage range is from 1.2 V to 3.6 V.
- What are the logic switching levels supported by the 74LVC244APW?
The device supports CMOS and LVTTL logic switching levels.
- What is the maximum output drive capability of the 74LVC244APW?
The maximum output drive capability is ± 24 mA.
- What is the maximum operating frequency of the 74LVC244APW?
The maximum operating frequency is 175 MHz.
- What type of package is the 74LVC244APW available in?
The device is available in a TSSOP20 package.
- Does the 74LVC244APW have ESD protection?
- What is the temperature range for the 74LVC244APW?
The device operates from -40°C to 125°C.
- Can the 74LVC244APW be used in mixed voltage environments?
- Does the 74LVC244APW have IOFF circuitry?
