SN74CBTLV3245APW

Product Overview

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

Specifications

• Number of Channels: 8
• Voltage Translation: 1.2V to 3.6V (A Port), 1.65V to 5.5V (B Port)
• Maximum Data Rate: 100 Mbps
• Supply Voltage Range: 1.2V to 3.6V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74CBTLV3245APW has a total of 20 pins, which are arranged as follows:

1. OE (Output Enable) 1
2. A1 (Channel A Control Input) 1
3. B1 (Channel B Control Input) 1
4. I/O1 (Channel A/B Data I/O) 1
5. GND (Ground) 1
6. I/O2 (Channel A/B Data I/O) 2
7. B2 (Channel B Control Input) 2
8. A2 (Channel A Control Input) 2
9. OE (Output Enable) 2
10. VCC (Supply Voltage) 1
11. I/O3 (Channel A/B Data I/O) 3
12. B3 (Channel B Control Input) 3
13. A3 (Channel A Control Input) 3
14. OE (Output Enable) 3
15. I/O4 (Channel A/B Data I/O) 4
16. GND (Ground) 2
17. I/O5 (Channel A/B Data I/O) 5
18. B4 (Channel B Control Input) 4
19. A4 (Channel A Control Input) 4
20. OE (Output Enable) 4

Functional Features

• Bidirectional voltage level translation between two different voltage domains
• Automatic direction sensing and control
• Low power consumption
• High-speed data transmission
• ESD (Electrostatic Discharge) protection on all pins

Advantages and Disadvantages

Advantages: - Enables seamless communication between devices operating at different voltage levels - Supports high-speed data transfer - Low power consumption - Provides ESD protection for enhanced reliability

Disadvantages: - Limited to a maximum data rate of 100 Mbps - Requires careful consideration of voltage compatibility between the A and B ports

Working Principles

The SN74CBTLV3245APW is designed to translate signals between two voltage domains, typically used in electronic systems where different components operate at different voltage levels. It automatically senses the direction of data flow and adjusts the voltage levels accordingly.

When the OE (Output Enable) pin is low, the device is enabled, and the direction of data transmission is determined by the logic levels applied to the A1-A4 and B1-B4 control inputs. The I/O pins allow bidirectional data transfer between the A and B ports.

Detailed Application Field Plans

The SN74CBTLV3245APW can be used in various applications, including:

1. Mixed Voltage Systems: It enables communication between microcontrollers, sensors, and other devices operating at different voltage levels.
2. Level Shifting: It facilitates signal translation between different voltage domains in digital interfaces, such as UART, SPI, and I2C.
3. Bus Switching: It allows multiple devices to share a common bus by selectively connecting or disconnecting them.

Detailed and Complete Alternative Models

1. SN74CBTLV3257APW: Similar to SN74CBTLV3245APW but with 4 channels instead of 8.
2. SN74CBT3257PW: Quad FET Bus Switch with similar functionality.
3. SN74LVC4245APW: Octal Bus Transceiver with 3-state outputs.

These alternative models provide similar voltage level translation and bus switching capabilities, catering to different channel requirements and package options.

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