Overview
The 74HC244PW/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 circuit applications. It features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on the nOE pin causes the outputs to assume a high-impedance OFF-state, which is useful for bus interface applications. The device is part of the 74HC series, known for its CMOS low power dissipation and high noise immunity.
Key Specifications
| Type Number | VCC (V) | Logic Switching Levels | Output Drive Capability (mA) | fmax (MHz) | Number of Bits | Power Dissipation Considerations | Tamb (°C) | Rth(j-a) (K/W) | Rth(j-c) (K/W) | Package Name |
|---|---|---|---|---|---|---|---|---|---|---|
| 74HC244PW | 2.0 - 6.0 | CMOS | ± 7.8 | 36 | 8 | Low | -40 to +125 | 100 | 44.9 | TSSOP20 |
Key Features
- Wide Supply Voltage Range: Operates from 2.0 V to 6.0 V.
- CMOS Low Power Dissipation: Minimizes power consumption.
- High Noise Immunity: Ensures reliable operation in noisy environments.
- 3-State Outputs: Outputs can be set to high-impedance state using output enables.
- Input Clamp Diodes: Allows the use of current limiting resistors to interface inputs to voltages in excess of VCC.
- ESD Protection: Compliant with ANSI/ESDA/JEDEC JS-001 class 2 (HBM) and JS-002 class C3 (CDM).
- Multiple Package Options: Available in TSSOP20 package.
Applications
- Bus Interface: Ideal for octal bus interface applications due to its 3-state outputs.
- Digital Circuitry: Used in various digital circuits requiring buffering and line driving.
- Embedded Systems: Suitable for use in embedded systems where low power consumption and high reliability are crucial.
- Industrial Automation: Can be used in industrial automation systems for reliable signal transmission.
Q & A
- What is the primary function of the 74HC244PW/AUJ?
The primary function is to act as an 8-bit buffer/line driver with 3-state outputs.
- What is the supply voltage range for the 74HC244PW/AUJ?
The device operates from 2.0 V to 6.0 V.
- What are the logic switching levels for the 74HC244PW/AUJ?
The logic switching levels are CMOS.
- How many output enables does the 74HC244PW/AUJ have?
The device has two output enables (1OE and 2OE).
- What is the maximum output drive capability of the 74HC244PW/AUJ?
The maximum output drive capability is ± 7.8 mA.
- What is the maximum operating frequency of the 74HC244PW/AUJ?
The maximum operating frequency is 36 MHz.
- What type of package is the 74HC244PW/AUJ available in?
The device is available in a TSSOP20 package.
- Does the 74HC244PW/AUJ have ESD protection?
Yes, it complies with ANSI/ESDA/JEDEC JS-001 class 2 (HBM) and JS-002 class C3 (CDM).
- What are the temperature ranges for the 74HC244PW/AUJ?
The device is specified from -40 °C to +85 °C and -40 °C to +125 °C.
- Is the 74HC244PW/AUJ RoHS compliant?
Yes, the device is RoHS compliant.
