74HC244D: Overview, Features, and Applications
Toshiba Semiconductor and Storage
DUAL Buffer, Non-Inverting 2V~6V 3-State Buffers 74HC Series 4 Bit per Element 20-SOIC (0.295, 7.50mm Width)
Unit Price: $0.608295
Ext Price: $0.61









DUAL Buffer, Non-Inverting 2V~6V 3-State Buffers 74HC Series 4 Bit per Element 20-SOIC (0.295, 7.50mm Width)
An 8-bit buffer/line driver with 3-state outputs is the 74HC244; 74HCT244. One 8-bit buffer or two 4-bit buffers can be used with the device.
74HC244D Description
An 8-bit buffer/line driver with 3-state outputs is the 74HC244; 74HCT244. One 8-bit buffer or two 4-bit buffers can be used with the device. Two output enables (1OE and 2OE) on the device each control four 3-state outputs. The outputs enter a high-impedance OFF-state when nOE is HIGH. Clamp diodes in the inputs allow current limiting resistors to be used to interface inputs to voltages higher than VCC.
74HC244D Pinout

74HC244D CAD Model
Symbol

Footprint

3D Model

74HC244D Features
large 2.0–6.0 V supply voltage range
Low power dissipation in CMOS
Good resistance to noise
According to JESD 78 Class II Level B, latch-up performance surpasses 100 mA.
Specifications
- TypeParameter
- Factory Lead Time12 Weeks
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
20-SOIC (0.295, 7.50mm Width) - Surface Mount
having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.
YES - Number of Elements2
- Usage LevelIndustrial grade
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~85°C TA - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Cut Tape (CT) - Published2016
- Series
In electronic components, the "Series" refers to a group of products that share similar characteristics, designs, or functionalities, often produced by the same manufacturer. These components within a series typically have common specifications but may vary in terms of voltage, power, or packaging to meet different application needs. The series name helps identify and differentiate between various product lines within a manufacturer's catalog.
74HC - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
1 (Unlimited) - Number of Terminations20
- Voltage - Supply
Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.
2V~6V - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
DUAL - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
GULL WING - Peak Reflow Temperature (Cel)
Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.
NOT SPECIFIED - Number of Functions2
- Supply Voltage
Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.
4.5V - Time@Peak Reflow Temperature-Max (s)
Time@Peak Reflow Temperature-Max (s) refers to the maximum duration that an electronic component can be exposed to the peak reflow temperature during the soldering process, which is crucial for ensuring reliable solder joint formation without damaging the component.
NOT SPECIFIED - Output Type
The "Output Type" parameter in electronic components refers to the type of signal or data that is produced by the component as an output. This parameter specifies the nature of the output signal, such as analog or digital, and can also include details about the voltage levels, current levels, frequency, and other characteristics of the output signal. Understanding the output type of a component is crucial for ensuring compatibility with other components in a circuit or system, as well as for determining how the output signal can be utilized or processed further. In summary, the output type parameter provides essential information about the nature of the signal that is generated by the electronic component as its output.
3-State - Supply Voltage-Max (Vsup)
The parameter "Supply Voltage-Max (Vsup)" in electronic components refers to the maximum voltage that can be safely applied to the component without causing damage. It is an important specification to consider when designing or using electronic circuits to ensure the component operates within its safe operating limits. Exceeding the maximum supply voltage can lead to overheating, component failure, or even permanent damage. It is crucial to adhere to the specified maximum supply voltage to ensure the reliable and safe operation of the electronic component.
6V - Supply Voltage-Min (Vsup)
The parameter "Supply Voltage-Min (Vsup)" in electronic components refers to the minimum voltage level required for the component to operate within its specified performance range. This parameter indicates the lowest voltage that can be safely applied to the component without risking damage or malfunction. It is crucial to ensure that the supply voltage provided to the component meets or exceeds this minimum value to ensure proper functionality and reliability. Failure to adhere to the specified minimum supply voltage may result in erratic behavior, reduced performance, or even permanent damage to the component.
2V - Number of Ports
A port is identified for each transport protocol and address combination by a 16-bit unsigned number,.
2 - Family
In electronic components, the parameter "Family" typically refers to a categorization or classification system used to group similar components together based on their characteristics, functions, or applications. This classification helps users easily identify and select components that meet their specific requirements. The "Family" parameter can include various subcategories such as resistors, capacitors, diodes, transistors, integrated circuits, and more. Understanding the "Family" of an electronic component can provide valuable information about its compatibility, performance specifications, and potential uses within a circuit or system. It is important to consider the "Family" parameter when designing or troubleshooting electronic circuits to ensure proper functionality and compatibility with other components.
HC/UH - Logic Type
Logic Type in electronic components refers to the classification of circuits based on the logical operations they perform. It includes types such as AND, OR, NOT, NAND, NOR, XOR, and XNOR, each defining the relationship between binary inputs and outputs. The logic type determines how the inputs affect the output state based on specific rules of Boolean algebra. This classification is crucial for designing digital circuits and systems, enabling engineers to select appropriate components for desired functionalities.
Buffer, Non-Inverting - Output Polarity
Output polarity in electronic components refers to the orientation of the output signal in relation to the ground or reference voltage. It indicates whether the output voltage is positive or negative with respect to the ground. Positive output polarity means the signal is higher than the ground potential, while negative output polarity signifies that the signal is lower than the ground. This characteristic is crucial for determining compatibility with other components in a circuit and ensuring proper signal processing.
TRUE - Number of Bits per Element4
- Propagation Delay (tpd)
Propagation delay (tpd) is a crucial parameter in electronic components, especially in digital circuits. It refers to the time taken for a signal to travel from the input of a component to its output. This delay is caused by various factors such as the internal circuitry, interconnections, and the physical properties of the component. Propagation delay is essential to consider in designing circuits to ensure proper timing and functionality. It is typically measured in nanoseconds or picoseconds and plays a significant role in determining the overall performance and speed of electronic systems.
165 ns - Width7.5mm
- RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
RoHS Compliant
Parts with Similar Specs
74HC244D Package

What is the function of the 74HC244D?
The 74HC244D is designed to provide buffering and line-driving capabilities for digital signals. It can take in eight input signals and produce corresponding output signals with enhanced driving capability. The 3-state outputs allow the outputs to be actively driven to a high-impedance state when not enabled.
What is the voltage range supported by the 74HC244D?
The 74HC244D is compatible with a wide range of voltage levels. It can operate with a power supply voltage (VCC) ranging from 2.0V to 6.0V, making it suitable for both 3.3V and 5V systems.
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