Overview
The 74LVC2244APW/AUJ, produced by NXP USA Inc., is an 8-bit buffer/line driver with 3-state outputs. This device can be utilized as two 4-bit buffers or as a single 8-bit buffer, making it versatile for various digital logic applications. It features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state, which is useful in managing output states efficiently.
The device is designed to operate in mixed 3.3 V and 5 V environments, with inputs that can be driven from either voltage level. It also includes Schmitt-trigger action at all inputs, enhancing tolerance to slower input rise and fall times.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | fmax (MHz) | Nr of bits | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC2244APW | 1.2 - 3.6 | CMOS/LVTTL | ± 12 | 175 | 8 | low | -40 ~ 125 | 100 | 45 | TSSOP20 |
Key Features
- 8-bit buffer/line driver with 3-state outputs, configurable as two 4-bit buffers or one 8-bit buffer.
- Two output enables (1OE and 2OE) for controlling the 3-state outputs.
- 5 V tolerant input/output, allowing use in mixed 3.3 V and 5 V environments.
- Schmitt-trigger action at all inputs for improved noise immunity.
- Integrated 30 Ω termination resistors.
- IOFF circuitry for partial power-down mode operation.
- CMOS low-power consumption.
- Direct interface with TTL levels.
- Overvoltage tolerant inputs up to 5.5 V.
- ESD protection: HBM (ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V), CDM (ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V).
Applications
The 74LVC2244APW/AUJ is suitable for a wide range of applications across various industries, including:
- Automotive systems: For reliable and efficient signal buffering in automotive electronics.
- Industrial control systems: To manage and buffer digital signals in industrial environments.
- Consumer electronics: For use in devices requiring low-power, high-reliability signal buffering.
- Mobile and wearable devices: To optimize power consumption and signal integrity in portable electronics.
- Computing and networking: For buffering and driving digital signals in computing and networking equipment.
Q & A
- What is the primary function of the 74LVC2244APW/AUJ?
The primary function is to act as an 8-bit buffer/line driver with 3-state outputs, which can be configured as two 4-bit buffers or one 8-bit buffer.
- What are the voltage ranges for the VCC and input/output tolerance?
The VCC range is from 1.2 V to 3.6 V, and the input/output is 5 V tolerant.
- What is the significance of the Schmitt-trigger action at the inputs?
The Schmitt-trigger action improves noise immunity by making the circuit tolerant of slower input rise and fall times.
- How does the IOFF circuitry benefit the device?
The IOFF circuitry enables partial power-down mode operation, preventing backflow current when the device is powered down.
- What type of ESD protection does the device offer?
The device offers ESD protection with HBM exceeding 2000 V and CDM exceeding 1000 V.
- What is the operating temperature range for the device?
The device operates from -40 °C to +125 °C.
- What package type is the 74LVC2244APW/AUJ available in?
The device is available in a TSSOP20 package.
- Can the device be used in mixed voltage environments?
Yes, it can be used in mixed 3.3 V and 5 V environments.
- What are the key industries where this device is commonly used?
The device is commonly used in automotive, industrial, consumer electronics, mobile, and computing applications.
- Does the device comply with any specific standards?
Yes, it complies with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36.
