MM74HCT244SJ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-Speed, CMOS Logic, Octal 3-State Non-Inverting Buffer/Line Driver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The MM74HCT244SJ is a high-speed CMOS logic IC that serves as an octal 3-state non-inverting buffer/line driver. It is commonly used to amplify and buffer digital signals in various electronic circuits.
• Packaging/Quantity: The MM74HCT244SJ is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 25 MHz
• Number of Channels: 8
• Output Current: ±6mA
• Propagation Delay Time: 13 ns (max)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MM74HCT244SJ has a total of 20 pins, which are assigned as follows:

1. Pin 1: Output Enable (OE) 1
2. Pin 2: Input/Output (I/O) 1
3. Pin 3: I/O 2
4. Pin 4: I/O 3
5. Pin 5: I/O 4
6. Pin 6: I/O 5
7. Pin 7: I/O 6
8. Pin 8: GND (Ground)
9. Pin 9: I/O 7
10. Pin 10: I/O 8
11. Pin 11: OE 2
12. Pin 12: I/O 9
13. Pin 13: I/O 10
14. Pin 14: I/O 11
15. Pin 15: I/O 12
16. Pin 16: VCC (Supply Voltage)
17. Pin 17: I/O 13
18. Pin 18: I/O 14
19. Pin 19: I/O 15
20. Pin 20: I/O 16

Functional Features

• High-Speed Operation: The MM74HCT244SJ is designed to operate at high frequencies, making it suitable for applications that require fast signal amplification and buffering.
• CMOS Logic: This IC utilizes CMOS technology, which offers low power consumption and high noise immunity.
• Octal 3-State Non-Inverting Buffer/Line Driver: It provides eight independent buffer/driver channels with three-state outputs, allowing multiple signals to be controlled independently.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient signal processing. - CMOS technology ensures low power consumption. - Three-state outputs provide flexibility in signal control.

Disadvantages: - Limited output current may restrict its use in certain applications requiring higher current capabilities. - Propagation delay time may introduce timing issues in time-critical circuits.

Working Principles

The MM74HCT244SJ operates by receiving digital input signals on its input pins and amplifying/buffering them to the corresponding output pins. The output enable pins (OE1 and OE2) control the state of the outputs, allowing them to be either active or in a high-impedance state. When the output enable pins are active, the input signals are amplified and passed through to the output pins. Conversely, when the output enable pins are inactive, the outputs enter a high-impedance state, effectively disconnecting them from the circuit.

Detailed Application Field Plans

The MM74HCT244SJ finds applications in various electronic systems and circuits, including:

1. Microcontrollers: It can be used to interface microcontrollers with external devices, providing signal buffering and amplification.
2. Data Communication Systems: The IC can be employed in data communication systems to amplify and buffer digital signals transmitted between different components.
3. Memory Systems: It can be utilized in memory systems to enhance signal integrity and drive signals across multiple memory modules.
4. Industrial Automation: The MM74HCT244SJ can be integrated into industrial automation systems to amplify and buffer control signals for actuators and sensors.
5. Automotive Electronics: It finds use in automotive electronics for signal conditioning and driving signals to various vehicle subsystems.

Detailed and Complete Alternative Models

1. SN74HCT244N: This is a similar octal 3-state non-inverting buffer/line driver IC manufactured by Texas Instruments.
2. CD74HCT244E: Another alternative IC produced by Texas Instruments, offering the same functionality as the MM74HCT244SJ. 3