SN74LVT245BDWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: Low Voltage, Bi-directional, 8-bit, Non-inverting
• Package: SOIC-20 Wide
• Essence: This IC is designed to shift the voltage levels of digital signals and act as a bidirectional bus transceiver.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• 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), VCC (max)
• Low-Level Output Voltage: 0.4V (max), 0.1V (min)
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The SN74LVT245BDWR 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. GND (Ground)
5. B2 (Data Input/Output) 2
6. A2 (Data Input/Output) 2
7. VCC (Supply Voltage)
8. DIR (Direction Control)
9. OE (Output Enable) 2
10. B3 (Data Input/Output) 3
11. A3 (Data Input/Output) 3
12. B4 (Data Input/Output) 4
13. A4 (Data Input/Output) 4
14. VCC (Supply Voltage)
15. GND (Ground)
16. A5 (Data Input/Output) 5
17. B5 (Data Input/Output) 5
18. DIR (Direction Control)
19. OE (Output Enable) 3
20. Y (Data Input/Output)

Functional Features

• Bidirectional voltage level shifting between two different voltage domains.
• Non-inverting logic translation for both input and output signals.
• High-speed operation with minimal propagation delay.
• Output enable control to disable the outputs when not required.
• Direction control to select the direction of data flow.

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Bi-directional capability simplifies the design of bidirectional communication interfaces.
• Non-inverting nature preserves the integrity of digital signals during translation.
• High-speed operation ensures efficient data transfer.
• Output enable control provides flexibility in managing the outputs.

Disadvantages

• Limited number of data lines (8-bit) may not be suitable for applications requiring a higher number of data lines.
• The SOIC-20 package may not be ideal for space-constrained designs.

Working Principles

The SN74LVT245BDWR operates by receiving digital signals from one voltage domain and translating them to another voltage domain. It uses a combination of level shifting and non-inverting logic translation techniques to ensure accurate and reliable data transfer. The direction control pin determines the direction of data flow, while the output enable pin allows the user to enable or disable the outputs as needed.

Detailed Application Field Plans

The SN74LVT245BDWR is commonly used in various applications that require voltage level shifting and bidirectional communication. Some of the typical application fields include:

1. Microcontroller interfacing with peripherals operating at different voltage levels.
2. Communication interfaces between different logic families (e.g., TTL to CMOS).
3. Bus transceivers in data communication systems.
4. Level shifting in battery-powered devices with low voltage requirements.

Detailed and Complete Alternative Models

1. SN74LVC245A: Similar functionality with a wider supply voltage range (1.2V to 3.6V).
2. SN74LVTH245A: Bi-directional level shifter with 3-state outputs.
3. SN74AVC4T245: 4-bit bidirectional voltage level translator with automatic direction sensing.

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

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