Texas Instruments SN74HC244DBR

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SN74HC244DBR

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Description:
8-ch, 2-V to 6-V buffers with 3-state outputs

RoHS Status:

RoHS

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Total Price: $1.55

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Specifications

Product Details

Product Comparison

Factory Lead Time
6 Weeks
Lifecycle Status
ACTIVE (Last Updated: 6 days ago)
Contact Plating
Gold
Mount
Surface Mount
Mounting Type

Mounting Type refers to the method by which an electronic component is attached to a printed circuit board (PCB) or other surface. Common mounting types include: * Through-hole: Component leads are inserted into holes in the PCB and soldered on the other side. * Surface-mount: Component is placed on the surface of the PCB and soldered in place. * Press-fit: Component is pressed into place on the PCB without soldering. * Socket: Component is inserted into a socket on the PCB, allowing for easy replacement. The mounting type is determined by factors such as the component's size, shape, and power requirements.

Surface Mount
Package / Case

Package / Case refers to the physical housing or enclosure that encapsulates an electronic component. It provides protection, facilitates handling, and enables electrical connections. The package type determines the component's size, shape, pin configuration, and mounting options. Common package types include DIP (dual in-line package), SOIC (small outline integrated circuit), and BGA (ball grid array). The package also influences the component's thermal and electrical performance.

20-SSOP (0.209, 5.30mm Width)
Number of Pins

Number of Pins: Indicates the number of electrical connections available on the component. These pins are used to connect the component to other components or circuits on a printed circuit board (PCB). The number of pins determines the functionality and connectivity options of the component. It is important to ensure that the component has the correct number of pins for the intended application.

20
Operating Temperature

Operating Temperature is the range of temperatures at which an electronic component can function properly. It is typically specified in degrees Celsius (°C) and indicates the minimum and maximum temperatures at which the component can operate without experiencing damage or degradation. Operating Temperature is an important parameter to consider when designing electronic circuits, as it ensures that the components will function reliably in the intended operating environment.

-40°C~85°C TA
Packaging
Cut Tape (CT)
Series

Series, in the context of electronic components, refers to the arrangement of components in a circuit. When components are connected in series, they form a single path for current to flow through. The total resistance of a series circuit is the sum of the individual resistances of each component. Series connections are often used to control the flow of current in a circuit, as the total resistance can be adjusted by changing the number or type of components in the series.

74HC
JESD-609 Code
e4
Pbfree Code
yes
Part Status

Part Status is an electronic component parameter that indicates the availability and production status of a component. It is typically used to inform customers about the availability of a component, whether it is in production, end-of-life, or obsolete. Part Status can also provide information about any restrictions or limitations on the component's use, such as whether it is only available for certain applications or if it has been discontinued.

Active
Moisture Sensitivity Level (MSL)

Moisture Sensitivity Level (MSL) is a measure of the susceptibility of a surface mount electronic component to moisture-induced damage during soldering. It is classified into six levels, from 1 (least sensitive) to 6 (most sensitive). MSL is determined by the materials used in the component's construction, including the solderability of its terminals and the presence of moisture-absorbing materials. Components with higher MSL ratings require more stringent handling and storage conditions to prevent moisture absorption and subsequent damage during soldering.

1 (Unlimited)
Number of Terminations
20
ECCN Code
EAR99
Subcategory
Bus Driver/Transceivers
Packing Method
TR
Technology

Technology, in the context of electronic components, refers to the specific manufacturing process and materials used to create the component. It encompasses the semiconductor fabrication techniques, such as the type of transistor used (e.g., MOSFET, BJT), the gate oxide thickness, and the interconnect materials. Technology also includes the packaging type, such as surface mount or through-hole, and the leadframe or substrate material. The technology used impacts the component's performance characteristics, such as speed, power consumption, and reliability.

CMOS
Voltage - Supply
2V~6V
Terminal Position
DUAL
Terminal Form
GULL WING
Peak Reflow Temperature (Cel)
260
Number of Functions
2
Supply Voltage

Supply Voltage is the voltage required to power an electronic component. It is typically measured in volts (V) and is specified in the component's datasheet. The supply voltage must be within the specified range for the component to function properly. If the supply voltage is too low, the component may not function at all. If the supply voltage is too high, the component may be damaged.

5V
Terminal Pitch
0.65mm
Base Part Number
74HC244
Pin Count
20
Output Type

Output type refers to the type of signal or power that an electronic component can produce. It can be analog or digital, AC or DC, and can vary in voltage, current, or power levels. The output type is determined by the component's design and is crucial for matching it with other components in a circuit. Understanding the output type ensures proper signal processing, power delivery, and overall system functionality.

3-State
Operating Supply Voltage
5V
Number of Elements
2
Polarity

Polarity refers to the direction of current flow through an electronic component. It is typically indicated by a plus (+) or minus (-) sign on the component's body. Components with polarity must be connected correctly in a circuit to function properly. For example, a diode will only allow current to flow in one direction, from the positive terminal to the negative terminal. If a diode is connected backwards, it will not conduct current.

Non-Inverting
Supply Voltage-Max (Vsup)
6V
Supply Voltage-Min (Vsup)
2V
Load Capacitance

Load Capacitance (CL) is a parameter that specifies the maximum capacitance that can be connected to the output of an electronic component without affecting its performance. It is typically measured in picofarads (pF) or nanofarads (nF). A high load capacitance can cause the output voltage to drop or the output current to increase, which can lead to instability or damage to the component.

50pF
Number of Ports

Number of Ports refers to the number of electrical connections or terminals available on an electronic component. It indicates the number of external devices or signals that can be connected to the component. For example, a transistor may have three ports (emitter, base, and collector), while a resistor has two ports (terminals). The number of ports determines the functionality and connectivity options of the component within a circuit.

2
Propagation Delay
28 ns
Quiescent Current

Quiescent current is the amount of current drawn by an electronic component when it is not actively performing its intended function. It is typically measured in milliamps (mA) or microamps (µA). Quiescent current is important because it can affect the overall power consumption of a circuit, especially in battery-powered devices. Components with high quiescent current can drain batteries more quickly than those with low quiescent current.

8μA
Turn On Delay Time
165 ns
Family
HC/UH
Logic Function
Buffer, Inverting
Current - Output High, Low
7.8mA 7.8mA
Logic Type

Logic Type refers to the type of logic implemented by an electronic component, such as a logic gate or flip-flop.

Buffer, Non-Inverting
Number of Bits per Element

Number of Bits Per Element (NBE) specifies the number of bits used to represent each element in a digital signal. It determines the resolution and precision of the signal. A higher NBE results in a more accurate representation of the signal, but also increases the data size and processing requirements. NBE is commonly used in digital-to-analog converters (DACs), analog-to-digital converters (ADCs), and other digital signal processing systems.

4
Control Type
ENABLE LOW
Number of Input Lines
8
Count Direction
UNIDIRECTIONAL
Height

Height, in the context of electronic components, refers to the vertical dimension of the component. It is typically measured in millimeters (mm) or inches (in). Height is an important parameter to consider when designing and assembling electronic circuits, as it affects the overall size and form factor of the device. Components with a smaller height are often preferred for applications where space is limited, such as in portable devices or embedded systems.

2mm
Length

Length, in the context of electronic components, refers to the physical dimension of a component along its longest axis. It is typically measured in millimeters (mm) or inches (in). Length is a crucial parameter for determining the physical size and space requirements of a component on a printed circuit board (PCB) or other assembly. It also affects the component's electrical characteristics, such as inductance and capacitance, which can be influenced by the length of conductors or traces within the component.

7.2mm
Width
5.3mm
Thickness

Thickness, in the context of electronic components, refers to the vertical distance between two opposing surfaces of a component. It is typically measured in millimeters (mm) or inches (in). Thickness is a crucial parameter that affects the component's physical dimensions, weight, and performance characteristics. It influences factors such as heat dissipation, electrical insulation, and mechanical stability. Thinner components generally offer better heat dissipation and space efficiency, while thicker components may provide enhanced durability and structural integrity.

1.95mm
Radiation Hardening
No
RoHS Status
ROHS3 Compliant
Lead Free
Lead Free
Description
The SNx4HC244 octal buffers and line drivers are designed to enhance the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. These devices are organized as two 4-bit buffers and drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

Features
Wide operating voltage range: 2 V to 6 V
High-current outputs drive up to 15 LSTTL loads
3-state outputs drive bus lines or buffer memory address registers
Low power consumption: Icc, 80-μA (Maximum)
Typical tpd = 11 ns
16-mA output drive at 5 V
Low input current of 1 μA (Maximum)

Applications
Servers
LED displays
Network switches
Telecom infrastructure
Motor drivers
I/O expanders
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