M74HC244B1R

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, Octal, Non-Inverting, 3-State Output
• Package: SOIC-20
• Essence: The M74HC244B1R is a high-performance octal buffer/line driver IC designed for general-purpose digital applications.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: -0.5V to VCC + 0.5V
• Output Voltage: -0.5V to VCC + 0.5V
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 9 ns (typical) at VCC = 4.5V, CL = 15 pF
• Output Current: ±25 mA
• Input Capacitance: 3.5 pF (typical)
• Output Capacitance: 8 pF (typical)

Detailed Pin Configuration

The M74HC244B1R has a total of 20 pins arranged as follows:

+---+--+---+ A1 -|1 +--+ 20|- VCC A2 -|2 |- B1 A3 -|3 |- B2 A4 -|4 |- B3 A5 -|5 |- B4 A6 -|6 |- B5 A7 -|7 |- B6 A8 -|8 |- B7 GND -|9 |- B8 OE -|10 |- Y1 Y2 -|11 |- Y3 Y4 -|12 |- Y5 Y6 -|13 |- Y7 Y8 -|14 |- GND A8 -|15 |- A7 A6 -|16 |- A5 A4 -|17 |- A3 A2 -|18 |- A1 +---+--+---+

Functional Features

• Octal non-inverting buffer/line driver with 3-state outputs.
• High-speed operation suitable for various digital applications.
• Wide operating voltage range allows compatibility with different systems.
• 3-state outputs provide flexibility in controlling bus lines.

Advantages and Disadvantages

Advantages: - High-speed performance enables efficient data transfer. - Non-inverting nature preserves signal integrity. - 3-state outputs allow multiple devices to share a common bus line.

Disadvantages: - Limited output current may restrict use in certain high-power applications. - Lack of built-in protection features may require additional circuitry for robustness.

Working Principles

The M74HC244B1R operates as an octal buffer/line driver. It takes input signals and amplifies them to drive corresponding output lines. The non-inverting nature ensures that the output signal matches the input signal, preserving signal integrity. The 3-state outputs enable the device to be easily connected to a shared bus line, allowing multiple devices to communicate without interference.

Detailed Application Field Plans

The M74HC244B1R finds applications in various digital systems, including but not limited to: - Microcontrollers and microprocessors - Memory systems - Communication interfaces - Data acquisition systems - Industrial automation

Detailed and Complete Alternative Models

• SN74HC244N by Texas Instruments
• CD74HC244E by Texas Instruments
• 74HCT244 by NXP Semiconductors
• MC74HC244AN by ON Semiconductor

These alternative models offer similar functionality and can be used as replacements for the M74HC244B1R in various applications.

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