MC74HC245ADWR2G

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter/Transceiver
• Characteristics: High-Speed, CMOS Technology
• Package: SOIC-20
• Essence: Bidirectional Voltage-Level Translator
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Input Current: ±1µA
• Maximum Output Current: ±25mA
• Propagation Delay Time: 13ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MC74HC245ADWR2G has a total of 20 pins, which are arranged as follows:

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

Functional Features

• Bidirectional voltage-level translation between two different voltage domains.
• High-speed operation suitable for various applications.
• CMOS technology ensures low power consumption and compatibility with other logic families.
• Output enable and direction control pins provide flexibility in controlling data flow.

Advantages and Disadvantages

Advantages: - Allows interfacing between devices operating at different voltage levels. - High-speed operation enables efficient data transfer. - Low power consumption due to CMOS technology. - Flexible control options with output enable and direction control pins.

Disadvantages: - Limited to voltage translation between specific voltage ranges (2V to 6V). - May require additional components for level shifting in certain applications. - Sensitivity to electrostatic discharge (ESD) requires proper handling during installation.

Working Principles

The MC74HC245ADWR2G is a bidirectional voltage-level translator designed to facilitate communication between devices operating at different voltage levels. It uses CMOS technology, which allows for high-speed operation while consuming low power.

The direction of data flow is controlled by the DIR pin. When DIR is set to logic low, data is transferred from the A-side to the B-side. Conversely, when DIR is set to logic high, data flows from the B-side to the A-side.

The OE (Output Enable) pin is used to enable or disable the outputs. When OE is set to logic high, the outputs are disabled, effectively isolating the input and output sides.

Detailed Application Field Plans

The MC74HC245ADWR2G can be used in various applications that require voltage-level translation. Some potential application fields include:

1. Microcontroller interfacing with different voltage peripherals.
2. Communication between devices operating at different logic levels.
3. Level shifting in mixed-voltage systems.
4. Data transfer between different voltage domains in industrial automation.
5. Interface conversion in automotive electronics.

Detailed and Complete Alternative Models

1. SN74LVC245A: Octal Bus Transceiver with 3-State Outputs
2. CD4050B: Hex Non-Inverting Buffer/Converter
3. TXS0108EPWR: 8-Bit Bidirectional Voltage-Level Translator

These alternative models offer similar functionality and can be used as substitutes for the MC74HC245ADWR2G in various applications.

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