SN74HCT245DWRG4

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: 2V to 6V
• Input Voltage Levels: VCC or GND
• Output Voltage Levels: VCC or GND
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 13 ns (Max)
• Output Drive Capability: ±24 mA

Detailed Pin Configuration

The SN74HCT245DWRG4 has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• Bidirectional voltage-level translation between two independent buses
• Allows interfacing between devices operating at different voltage levels
• Supports both 3.3V and 5V systems
• High-speed operation with low power consumption
• Non-inverting outputs for easy integration into existing designs
• Output enable control for disabling the outputs when not in use

Advantages and Disadvantages

Advantages: - Enables seamless communication between devices with different voltage levels - Wide operating voltage range allows compatibility with various systems - Fast propagation delay ensures efficient data transfer - Low power consumption for energy-efficient applications - Easy integration into existing designs due to non-inverting outputs

Disadvantages: - Limited output drive capability may restrict usage in high-current applications - Requires careful consideration of input and output voltage levels to prevent damage

Working Principles

The SN74HCT245DWRG4 is a bidirectional level shifter/transceiver that allows for voltage-level translation between two independent buses. It operates by monitoring the direction control input (DIR) to determine the direction of data flow. When DIR is set to logic high, data is transferred from Port A to Port B, and when DIR is set to logic low, data is transferred from Port B to Port A.

The device utilizes CMOS technology, which provides high-speed operation while maintaining low power consumption. The non-inverting outputs ensure compatibility with various systems, making it suitable for a wide range of applications.

Detailed Application Field Plans

The SN74HCT245DWRG4 can be used in various applications where voltage-level translation is required. Some potential application fields include:

1. Microcontroller Interfacing: The level shifter can be used to interface microcontrollers operating at different voltage levels, enabling seamless communication between them.

2. Logic Level Conversion: It can be employed to convert logic levels between different families of integrated circuits, such as TTL to CMOS or vice versa.

3. Bus Communication: The device facilitates communication between buses operating at different voltage levels, allowing data transfer between systems with varying requirements.

4. Sensor Interfaces: It can be utilized in sensor interfaces where sensors operate at different voltage levels than the main system, ensuring proper signal translation.

Detailed and Complete Alternative Models

1. SN74HCT245N: DIP-20 package, through-hole mounting option
2. SN74LVC245APW: TSSOP-20 package, low-voltage operation (1.65V to 5.5V)
3. CD74HCT245E: PDIP-20 package, wide operating temperature range (-55°C to +125°C)

These alternative models offer similar functionality and can be considered based on specific application requirements.

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