SN74ABT245BDGVR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-power, bidirectional voltage-level translator
• Package: VSSOP (Very Small Outline Package)
• Essence: Translates signals between different voltage levels in digital systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Number of Channels: 8
• Maximum Data Rate: 100 Mbps
• Propagation Delay: 3.7 ns (typical)

Detailed Pin Configuration

The SN74ABT245BDGVR has a total of 20 pins. The pin configuration is as follows:

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

Functional Features

• Bidirectional voltage-level translation between two different voltage domains.
• Allows interfacing between devices operating at different voltage levels.
• Supports both push-pull and open-drain output configurations.
• Provides automatic direction control based on the voltage level of the direction-control (DIR) input.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer. - Low-power consumption helps in reducing overall system power requirements. - Bidirectional capability simplifies system design and reduces component count. - Automatic direction control eliminates the need for external logic.

Disadvantages: - Limited to a maximum data rate of 100 Mbps. - Requires careful consideration of voltage compatibility between input and output systems. - May not be suitable for applications requiring higher data rates or complex voltage-level translations.

Working Principles

The SN74ABT245BDGVR is designed using CMOS technology, which enables it to operate at high speeds while consuming low power. It utilizes a combination of MOSFETs and transistors to perform bidirectional voltage-level translation. The DIR input determines the direction of data flow, and the OE input enables or disables the outputs.

When the DIR input is set to a logic high, the device translates signals from the A-side (lower voltage domain) to the B-side (higher voltage domain). Conversely, when the DIR input is set to a logic low, the device performs the translation in the opposite direction.

Detailed Application Field Plans

The SN74ABT245BDGVR can be used in various applications that require voltage-level translation, such as:

1. Interfacing between microcontrollers operating at different voltage levels.
2. Communication between different logic families (e.g., TTL and CMOS).
3. Level shifting in data communication systems, such as UART, SPI, or I2C buses.
4. Signal translation in mixed-voltage systems, including battery-powered devices.

Detailed and Complete Alternative Models

1. SN74LVC245A: Low-Voltage CMOS Octal Bus Transceiver
2. SN74HCT245: High-Speed CMOS Octal Bus Transceiver
3. SN74LVCH245A: Low-Voltage CMOS Octal Bus Transceiver with 3-State Outputs
4. SN74CBT3257: Quad FET Bus Switch

These alternative models offer similar functionality to the SN74ABT245BDGVR and can be considered based on specific application requirements.

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