SN74LV245ADWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: Low-voltage, Octal Bus Transceiver with 3-State Outputs
• Package: SOIC (Small Outline Integrated Circuit) package
• Essence: This IC is designed to shift logic levels and provide bidirectional communication between different voltage domains in electronic circuits.
• Packaging/Quantity: Tape and reel packaging, available in quantities of 2500 units per reel.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: 2.4V (min) at IOH = -4mA
• Low-Level Output Voltage: 0.4V (max) at IOL = 8mA
• Maximum Operating Frequency: 100MHz

Detailed Pin Configuration

The SN74LV245ADWR has a total of 20 pins arranged as follows:

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

Functional Features

• Bidirectional voltage level shifting between different voltage domains.
• 3-state outputs allow for bus sharing and isolation.
• High-speed operation with a maximum frequency of 100MHz.
• Low-voltage operation from 1.65V to 5.5V, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - Enables communication between circuits operating at different voltage levels. - Supports bidirectional data transfer. - Provides 3-state outputs for bus sharing and isolation. - Wide supply voltage range allows for versatile use.

Disadvantages: - May require additional external components for proper voltage translation in certain applications. - Limited to a maximum operating frequency of 100MHz.

Working Principles

The SN74LV245ADWR is designed as an octal bus transceiver, allowing bidirectional data transfer between two voltage domains. It operates by receiving input signals from one domain, translating them to the appropriate voltage level, and transmitting them to the other domain. The direction of data flow is controlled by the DIR pin, while the OE pin enables or disables the outputs.

Detailed Application Field Plans

The SN74LV245ADWR is commonly used in various electronic systems where there is a need to interface between different voltage domains. Some typical application fields include:

1. Microcontroller interfacing with peripheral devices operating at different voltage levels.
2. Communication interfaces between different logic families, such as TTL and CMOS.
3. Level shifting in battery-powered devices where low-voltage operation is required.
4. Bus transceivers in data communication systems.

Detailed and Complete Alternative Models

1. SN74LVC245A: Similar functionality with improved voltage tolerance and lower power consumption.
2. SN74HCT245: Higher voltage tolerance and compatibility with TTL logic levels.
3. SN74LVCH245A: Bi-directional level shifter with 3-state outputs and improved noise immunity.

These alternative models offer similar functionality to the SN74LV245ADWR but may have different specifications or additional features depending on the specific requirements of the application.

Word count: 446 words