74HCT244D

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74HCT244D

+Nomenclature

IC BUFF NON-INVERT 5.5V 20-SOIC

  • FabricantToshiba Semiconductor et stockage

  • Pièce fabricant #74HCT244D

  • Fiche technique 74HCT244D DataSheet

  • En stock2326

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Spécifications

Attribut Valeur
Series 74HCT
Part Status Obsolete
Base Product Number 74HCT244
Logic Type Buffer, Non-Inverting
Number of Elements 2
Number of Bits per Element 4
Output Type 3-State
Current - Output High, Low 6mA, 6mA
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package 20-SOIC (0.295", 7.50mm Width)
Supplier Device Package 20-SOIC
Packaging Cut Tape (CT), Tape & Reel (TR)

Présentation

Description

The 74HCT244D is an integrated circuit designed as an octal buffer/line driver with 3-state outputs. It is part of the 74HCT series, which is known for high-speed silicon-gate CMOS technology that is pin-compatible with the low-power Schottky TTL (LSTTL) family. The 74HCT244D features two sections, each with four buffers, and it operates with a supply voltage range of 4.5V to 5.5V, making it ideal for applications in digital signal interfacing and driving long bus lines.
Key features of the 74HCT244D include:
1. 3-State Outputs: Allows multiple devices to share the same output line without interference.
2. High Speed: Offers fast switching speeds suitable for high-performance computing tasks.
3. Low Power Consumption: Consumes less power compared to standard TTL devices.
4. Input Clamping Diodes: These protect the device against electrostatic discharge.
This IC is commonly used in microprocessor systems to buffer data and control signals, ensuring signal integrity when transmitting data over long distances or through multiple devices.

Equivalent

The 74HCT244D is a non-inverting buffer/driver with 3-state outputs. Equivalent products include:
1. SN74HCT244N by Texas Instruments
2. MC74HCT244 by ON Semiconductor
3. CD74HCT244 by Texas Instruments
4. TC74HCT244 by Toshiba
5. Nexperia 74HCT244
These are generally interchangeable in digital circuits, but always check the datasheet for specific electrical characteristics and pin configurations.

Features

The 74HCT244D is a high-speed CMOS octal buffer/line driver with 3-state outputs. It features:
1. Logic Family: It belongs to the 74HCT series, compatible with TTL logic levels.
2. Functionality: It provides buffering for data lines and is designed to improve the performance of microprocessor systems by driving high capacitive loads.
3. Channels: It includes eight buffer/line drivers with 3-state outputs.
4. 3-State Outputs: These outputs can drive bus lines or buffer memory address registers, with the capability to be in a high, low, or high-impedance state.
5. Outputs Control: The device has two output enable inputs, each controlling four outputs, allowing for selective enabling.
6. Supply Voltage: Operates at a supply voltage range of 4.5V to 5.5V.
7. Low Power Consumption: Benefits from the reduced power consumption of CMOS technology.
8. Package: Typically available in a standard dual in-line or a small-outline package.
9. Temperature Range: Operates over a standard commercial temperature range.
10. Applications: Commonly used in digital computing, switching, and buffer applications.
These features make the 74HCT244D suitable for a wide range of digital applications requiring efficient data buffering and line driving.

Pinout

The 74HCT244D is an integrated circuit that is commonly used as an octal buffer/line driver with 3-state outputs. It is part of the 74HCT244 series and typically comes in a 20-pin Dual In-line Package (DIP) or Small Outline Integrated Circuit (SOIC) package.
Here are the pin assignments and functions:
1. Pin Count: 20 pins.
2. Functions:
- Inputs: The device has two groups of four input pins (1A1-1A4 and 2A1-2A4) which are used to receive data signals.
- Outputs: There are two groups of four output pins (1Y1-1Y4 and 2Y1-2Y4) corresponding to the inputs and are used to drive the load.
- Output Enable (OE): There are two output enable pins (1OE and 2OE), one for each group of outputs. When the OE pin is low, the corresponding outputs are enabled; when high, the outputs are in a high-impedance state.
- Power and Ground: VCC and GND pins for power supply.
The 74HCT244D is utilized in applications requiring high-speed data buffering and driving capabilities, offering TTL compatibility and noise margin improvements.

Manufacturer

The 74HCT244D is manufactured by Nexperia, a company that specializes in the production of semiconductor components. Nexperia is known for its focus on efficiency, with a product range that includes discrete components, logic devices, and MOSFETs. The company was originally part of NXP Semiconductors and became independent in 2017. Nexperia is headquartered in Nijmegen, Netherlands, and serves markets globally, providing essential components for automotive, industrial, consumer, computing, and other electronic systems.

Application

The 74HCT244D is a high-speed CMOS octal buffer/line driver with 3-state outputs. It is commonly used in applications such as bus driving, signal buffering, and data routing in digital circuits. Its ability to drive high capacitive loads makes it suitable for use in communication interfaces, microprocessor systems, and memory addressing. The device is often employed in scenarios where bidirectional data flow is required, such as in multiplexers and demultiplexers. Additionally, it can be used to isolate different sections of a circuit, thereby minimizing signal interference and enhancing data integrity across various digital systems.

Package

The 74HCT244D is typically available in a Small Outline Integrated Circuit (SOIC) package, which is a surface-mounted package type. It is designed to be compact and suitable for automated assembly.

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