MM74HCT245SJ

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter/Transceiver
• Characteristics: High-Speed, CMOS Technology
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Bi-directional Logic Level Shifter
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Input Current: ±20mA
• Maximum Output Current: ±35mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MM74HCT245SJ has a total of 20 pins, which are arranged as follows:

1. DIR (Direction Control)
2. OE (Output Enable)
3. GND (Ground)
4. A1 (Input/Output)
5. B1 (Input/Output)
6. B2 (Input/Output)
7. A2 (Input/Output)
8. A3 (Input/Output)
9. B3 (Input/Output)
10. B4 (Input/Output)
11. A4 (Input/Output)
12. VCC (Supply Voltage)
13. B5 (Input/Output)
14. A5 (Input/Output)
15. A6 (Input/Output)
16. B6 (Input/Output)
17. B7 (Input/Output)
18. A7 (Input/Output)
19. A8 (Input/Output)
20. B8 (Input/Output)

Functional Features

• Bi-directional data transfer between two different voltage levels.
• High-speed operation with CMOS technology.
• Non-inverting logic level shifting.
• Output enable and direction control for flexible data flow.

Advantages

• Wide supply voltage range allows compatibility with various systems.
• High-speed operation enables efficient data transfer.
• CMOS technology provides low power consumption.
• Bi-directional functionality eliminates the need for separate level shifters.

Disadvantages

• Limited to a maximum supply voltage of 5.5V.
• May not be suitable for applications requiring higher current capabilities.
• Sensitive to electrostatic discharge (ESD) due to its CMOS nature.

Working Principles

The MM74HCT245SJ is designed to shift logic levels between two different voltage domains. It utilizes CMOS technology, which allows for high-speed operation while consuming minimal power. The direction control pin (DIR) determines the data flow direction, while the output enable pin (OE) enables or disables the outputs. By applying appropriate voltage levels to these control pins, the device can facilitate bi-directional data transfer between systems operating at different voltage levels.

Detailed Application Field Plans

The MM74HCT245SJ is commonly used in various applications that require level shifting between different voltage domains. Some typical application fields include:

1. Microcontroller interfacing with peripheral devices operating at different voltage levels.
2. Communication interfaces between systems using different logic families.
3. Signal translation between mixed-voltage systems.
4. Data transmission between modules with varying voltage requirements.

Detailed and Complete Alternative Models

1. SN74HCT245N: DIP package, similar specifications.
2. 74LVC245APW: TSSOP package, lower power consumption.
3. CD74HCT245E: PDIP package, wider temperature range.

Please note that the above list is not exhaustive, and there are several alternative models available from different manufacturers offering similar functionality.

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